Could not get JDBC Connection; nested exception is java.sql.SQLException: com.my-CSDN论坛

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Could not get JDBC Connection; nested exception is java.sql.SQLException: com.my [问题点数：20分，无满意结帖，结帖人weixin_44315431]

⋅Could not get JDBC Connection; nested exception is java.sql.SQLException: com.my 更多帖子 关注私信空间博客 那些年一起 本版专家分：0 结帖率 100%: HTTP Status 500 - Request processing failed; nested exception is java.lang.RuntimeException: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
type Exception report

message Request processing failed; nested exception is java.lang.RuntimeException: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.RuntimeException: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver
### The error may exist in com/taotao/mapper/TestMapper.xml
### The error may involve com.taotao.mapper.TestMapper.queryNow
### The error occurred while executing a query
### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver
### The error may exist in com/taotao/mapper/TestMapper.xml
### The error may involve com.taotao.mapper.TestMapper.queryNow
### The error occurred while executing a query
### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
at com.sun.proxy.$Proxy33.selectOne(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:163)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
at com.sun.proxy.$Proxy34.queryNow(Unknown Source)
at com.taotao.service.impl.TestServiceImpl.queryNow(TestServiceImpl.java:16)
at com.taotao.service.impl.TestServiceImpl$$FastClassBySpringCGLIB$$1a01e8af.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)
at com.taotao.service.impl.TestServiceImpl$$EnhancerBySpringCGLIB$$5f919904.queryNow(<generated>)
at com.alibaba.dubbo.common.bytecode.Wrapper0.invokeMethod(Wrapper0.java)
at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46)
at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72)
at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53)
at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:60)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:112)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91)
at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:108)
at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:84)
at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170)
at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52)
at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver
### The error may exist in com/taotao/mapper/TestMapper.xml
### The error may involve com.taotao.mapper.TestMapper.queryNow
### The error occurred while executing a query
### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
... 46 more
Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81)
at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67)
at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279)
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72)
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59)
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
... 53 more
Caused by: java.sql.SQLException: com.mysql.cj.jdbc.Driver
at com.alibaba.druid.util.JdbcUtils.createDriver(JdbcUtils.java:570)
at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:697)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1069)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1065)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:104)
at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
... 63 more
Caused by: java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/jav

0 2019-04-21 20:22:28

回复数 4 只看楼主引用举报楼主

⋅C语言求大神，这个简单程序为什么是一个死循环？ 更多帖子 关注私信空间博客 奋进的小白粥 本版专家分：110: 不是很清楚吗？最下面的的异常是最直接的，Caused by: java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver
就是你mysql的驱动jar包没找到，你检查下你驱动包是否已经加载到项目中？还有检查下你数据库配置文件有没有写错？

0 2019-04-22 08:12:13

只看TA 引用举报 #1 得分 0

Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not 1.版本不正确在检查mysql-connector-java.jar包版本时我发现自己引入的是8.0.11版本的，网上都是5.x的，瞬间感觉不妙了，因为版本问题真的让人头大。果不其然就是版本问题。有两种解决方法： 1.退回到5.x版本,其他配置不变 2.修改jdbc.properties文件 jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdb...

⋅java 操作itext问题，高手请进 ⋅谁能介绍一个好的swt界面开发工具 ⋅SQL求助 更多帖子 关注私信空间博客 杀猪剑客 本版专家分：823: 看下mysql的驱动jar包的版本老版本（5或者以前）是 com.mysql.jdbc.Driver ,新版本(6以后)的是com.mysql.cj.jdbc.Driver

0 2019-04-22 13:19:07

只看TA 引用举报 #2 得分 0

Could not get JDBC Connection; nested exception is java.sql.SQLException: Unknown initial character 使用spring JDBC报错Could not get JDBC Connection; nested exception is java.sql.SQLException: Unknown initial character set index ‘255’ received from server. Initial client character set can be forced via ...

青海棠 本版专家分：748: 感觉也是版本的问题楼上+1

0 2019-04-23 08:40:56

只看TA 引用举报 #3 得分 0

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Canno Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory 问题就出现在这句话：&lt;property name="username" value="${username}...

奋进的小白粥 本版专家分：110: 楼主问题解决了的话就结贴吧，我赚点分

0 2019-05-05 12:12:30

只看TA 引用举报 #4 得分 0

Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be a jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/AppStore?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true

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2017-12-28 12:47:51,478DEBUG[org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver] - <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} id, title, sell_point, price, num, barcode, image, cid, status, created, updated select distinct from tb_item order by ${orderByClause} select from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item insert into tb_item (id, title, sell_point, price, num, barcode, image, cid, status, created, updated) values (#{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}) insert into tb_item id, title, sell_point, price, num, barcode, image, cid, status, created, updated, #{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}, select count(*) from tb_item update tb_item id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP}, update tb_item set id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP} update tb_item title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP}, where id = #{id,jdbcType=BIGINT} update tb_item set title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP} where id = #{id,jdbcType=BIGINT} ``` 上面是逆向工程的mapper，后来我自己写了个TestMapper,还是出现同样的问题: ![图片说明](https://img-ask.csdn.net/upload/201712/28/1514454719_724728.png) 另外navicat访问数据库没问题。我想会不会是连接池配置的问题，也许那些配置可能导致这种情况？？

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Could not get JDBC Connection; nested exception解决方法: 运行程序时一直出现这个，使用的mysql是8.0.17，试了很多方法后才发现是数据库版本的问题。错误如下到最后才发现是pom.xml中的版本号不对应导致的，将版本号改过来就行。如下所示： <dependency> <groupId>mysql</groupId> <artifactId>mysql-...

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出现错误Could not get JDBC Connection; nested exception is java.sql.SQLException:com.mysql.cj.jdbc.Drive...: 问题描述：　　使用JDBC连接MySQL数据库时出现问题。问题截图：　　解决：　　原来使用的JDBC驱动包是mysql-connector-java-5.1.18版本的。　　改为mysql-connector-java-8.0.16版本。　　问题解决转载于:https://www.cnblogs.com/letherwave/p/1153...

Could not get JDBC Connection; nested exception is java.sql.SQLException: 今天用换了台机器做我的毕业设计（数据库用的是oracle），配置好后启动服务器运行程序，出现了如下错误： [color=red]Could not get JDBC Connection; nested exception is java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection...

解决Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user ‘15916’@‘localhost’ (using password: YES)...

关于使用ideal 出现Could not get JDBC Connection问题: 关于使用ideal 出现Could not get JDBC Connection问题 org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot load JDBC driver...

idea连接mysql数据库报java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeExcepti: 出错场景：使用idea连接mysql（5.2版本）报错： java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'ÖÐ¹ú±ê×¼Ê±¼ä' is unrecognized or represents more th...

Could not get JDBC Connection: 刚照着网上搭的ssm框架，写了个简单的查询user表，报错如下：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframewor...

RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理: RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理 1. 出现这个错误信息的原因 2. 如何处理该错误信息 3. 如何判断查询是否使用内部临时表在使用 RDS 的过程中，有时会碰到下面的出错信息： the table ‘/home/mysq...

在系统访问高峰期出现无法获取数据库连接的异常: 最近遇到一个棘手的问题,请教各位能否查明报出异常的原因： 1：正常情况下系统运行没有问题，但是系统访问高峰情况下会出现，日志如下，这段日志出现一段时间之后，应用就会假死，持续1分钟左右之后恢复。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException : javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS The error may exist in com/huifu/muser/common/dal/dao/MerUsrMapMapper.xml The error may involve com.huifu.muser.common.dal.dao.MerUsrMapMapper.queryMerUsrMap The error occurred while executing a query Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: javax.resource.ResourceE xception: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:365) at com.sun.proxy.$Proxy157.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:195) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:124) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:90) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at com.sun.proxy.$Proxy158.queryMerUsrMap(Unknown Source) at com.huifu.muser.service.core.cash.impl.CashReqServiceImpl.checkMerUsrMap(CashReqServiceImpl.java:267) at com.huifu.muser.biz.cash.impl.CashReqManager2Impl.cashConfirmReq(CashReqManager2Impl.java:211) at com.huifu.muser.webapp.controller.cash.CashController.cashConfirm2(CashController.java:200) at sun.reflect.GeneratedMethodAccessor2127.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 2：我的应用框架是 spring3.0.5+mybatis3.1.1+JBoss7.1+oracle11+jdk1.6 3：负载均衡 netscaler,两台虚拟机，四核，内存8G,jvm启动参数配置如下： -XX:+UseCompressedOops -XX:+TieredCompilation -Xms4096m -Xmx4096m -Xmn1024m -XX:PermSize=256M -XX:MaxPermSize=512M -Djava.net.preferIPv4Stack=true -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -XX:SurvivorRatio=8 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 -Xnoclassgc -XX:+CMSClassUnloadingEnabled 4：我的数据库链接池是配置在jboss的配置文件standalone-ha.xml中，连接池配置为18-300，高峰期能达到300，即应用确实与数据库建立300链接，但是活跃链接在15左右，配置如下 ![图片说明](https://img-ask.csdn.net/upload/201601/20/1453293770_127311.png)

JAVAweb项目出现Could not get JDBC Connection，与Navicat连接MySQL1130，2003问题: 在登陆自己基于SSM项目出现Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableCon...

JDBC连接碰到的一些问题解决方法: 今天在idea上学习JDBC驱动链接MySQL进行查询.MySQL 5.7.22, JDK9.写完语句之后,报了一连串的错误,首先是Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. 我使用的是mysql-connector-ja...

错误 java.sql.SQLNonTransientConnectionException: CLIENT_PLUGIN_AUTH is required: 一. 由于使用的是springboot默认的 mysql-connector-java 版本是八点多, 导致报了这个错误 Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically...

org.dom4j.DocumentException: Connection timed out: connect Nested exception: Connection timed out: c: 框架：struts2 2.2.3 + hibernate 3.0 所报异常： exception java.lang.reflect.InvocationTargetException sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.

Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'ro: 报了Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)错误的意思是找不到数据连接。也就是连接不到数据库原因是你的用户名或密码错误。这里有其中的一种解决方案。注

Could not get JDBC Connection; com.mysql.cj.jdbc.Driver？: 四月 17, 2019 2:15:44 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [taotao-manager] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver ### The error may exist in com/taotao/mapper/TbItemMapper.xml ### The error may involve com.taotao.mapper.TbItemMapper.selectByPrimaryKey ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver] with root cause java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at com.alibaba.druid.util.JdbcUtils.createDriver(JdbcUtils.java:518) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:583) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:915) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:911) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:98) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) at com.sun.proxy.$Proxy30.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:163) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at com.sun.proxy.$Proxy31.selectByPrimaryKey(Unknown Source) at com.taotao.service.impl.ItemServiceImpl.getItemById(ItemServiceImpl.java:24) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:267) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy34.getItemById(Unknown Source) at com.taotao.controller.ItemController.getItemById(ItemController.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) db.properties配置为 jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/taotao?useSSL=false&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF8 jdbc.username=root jdbc.password=123 连接池配置

原来很正常的hibernate连接mysql，突然报：java.net.ConnectException: Connection refused: connect: 大概两周前用myeclipse做的hibernate连接mysql的小测试，只是完成很简单的功能，很正常，今天拿来再试时，突然报下面的错误： Could not connect to: : 4070

nested exception is java.sql.SQLException: 无效的列索引: Exception occurred during processing request: PreparedStatementCallback; invalid ResultSet access fo

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connectio: 严重: StandardWrapper.Throwableorg.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections co...

Could not get JDBC Connection; myeclipse中java项目导入的问题: 严重: Exception starting filter CommonFilter org.mybatis.spring.MyBatisSystemException: nested excepti

成功解决java.net.ConnectException: Connection refused: connect: 解决问题 java.net.ConnectException: Connection refused: connect 解决方法可知端口被占用， T1、释放端口，重新启动端口即可！ T2、换一个别的端口亦可！如果以上办法没解决，请参考网友的解释参考网友解释因为SecureRandom的创建操作花费了大量时间，几百秒，所以tomcat启动很...

Could not get JDBC Connection的问题，请高手指点一下，谢谢！！！: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

maven项目用tomcat启动一直无法连接数据库！！Could not get JDBC Connection: 十二月 04, 2017 12:54:55 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service()

Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could not: 学习慕课上的一个项目，使用的是Spring+Mybatis+c3po 学习搭建框架。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.sprin...

诡异的报错：java.sql.SQLException: Connections could not be acquired from the underlyi: 以下是我截取启动tomcat时候报错的关键几处：信息: Initializing Spring root WebApplicationContext2011-04-04 12:38:59,780 E

出现 java.net.ConnectException: Connection refused 异常的原因及解决方法: 1 异常描述在启动 Tomcat 服务器的时候，控制台一直输出异常信息，然后停止服务器，报出如下异常：2 异常原因通过观察上图中被标记出来的异常信息，咱们可以知道 java.net.ConnectException: Connection refused 此异常，为：连接被拒绝异常。之前也在网上搜索过该异常的原因，大多数人给出的答案是端口号被占用，或者在启动本次 Tomcat 服务器的之前“关闭

Spring+MyBatis整合后测试出现could not get JDBC connection原因: 配置文件jdbc.properties里面每一行设置后面存在空格，导致解析出错！

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot报错: Caused by: org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot create JDBC driver of cla...

springboot整合mybatis遇到的错误CannotGetJdbcConnectionException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: The server time zone value 'ÖÐ¹ú...

nested exception is java.sql.SQLException: 内部错误: 查看下是不是有数据为空，而数据库不能为空的

记Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could no: 搭建ssm项目时遇到的问题解决：url加上：useJDBCCompliantTimezoneShift=true&serverTimezone=UTC jdbc.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&serverTimezone=UTC...

tomcat 启动后访问数据库Could not open JDBC Connection for transaction: ubuntu系统下 tomcat 启动后访问数据库报错： org.springframework.transaction.CannotCreateTransactionException: Coul

org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for: 问题？org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction 整合大三大框架的时候，单独测试没问题，在请求action的时候，会出现以下问题： org.springframework.transaction.Canno

SpringMVC 无法获取连接报错: 在进行单元测试的时候，发现报错 Could not get JDBC Connection; nested exception is java.sql.SQLException: jdbc.properties配置文件信息 driver=com.mysql.jdbc.Driver url=jdbc:mysql://127.0.0.1:3306/seckill?useUnicode=true&

nested exception is java.sql.SQLException: 数字溢出的问题解决: 错误现象今天调试一段代码，里面有个逻辑，要批量取数据；当运行取到第二批数据的时候，程序报了如下错误： org.springframework.jdbc.UncategorizedSQLException: StatementCallback; uncategorized SQLException for SQL [select * from (select t.*,rownum rnm

SpringBoot+MyBaits+MySQL连接数据库出错，求大神指点配置: 报错如下： 2017-11-19 15:13:40.009 ERROR 15152 --- [nio-8090-exec-2] e.n.y.o.service.LoginModuleService : checkUserInfo: Error message is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) ### The error may exist in file [D:\Spring\JavaWeb\OnlineBookstore\target\classes\mybatis\mapper\UserInfoMapper.xml] ### The error may involve edu.javaee.onlinebookstore.mapper.UserInfoMapper.isNameExist ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) application.properties配置如下： server.port = 8090 spring.mvc.view.prefix = /WEB-INF/jsp/ spring.mvc.view.suffix = .jsp spring.datasource.driverClassName = com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://localhost:3306/onlinebookstore?useUnicode=true&characterEncoding=utf8&useSSL=false spring.datasource.username = root spring.datasource.password = root mybatis.typeAliasesPackage = edu.javaee.onlinebookstore.domain mybatis.config-location = classpath:mybatis/mybatis-config.xml mybatis.mapper-locations = classpath:mybatis/mapper/*Mapper.xml logging.file = log/service.log 检查过数据库密码正确，可以通过Navicat访问。

Could not get JDBC Connection的问题，请高手指点一下！！！: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

使用dbcp连接池的时候 org.springframework.jdbc.CannotGetJdbcConnectionException:: 异常如下：五月 07, 2017 5:30:03 下午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.servic

nested exception is java.sql.SQLException: com.mysql.jdbc.Driver: 公司项目本来是 oracle 驱动 + druid 数据源配置，以及多数据源配置。修改为 mysql+druid+单数据源。然后报错如下：说一下错误原因，错误原因也属于基础了。项目中，没有 mysql 驱动的jar 。第一次报错，是 druid 数据源配置，然后，找不到错误原因，更改成dbcp 链接，还是报错如下。一下午，就百度+谷歌这个问题了。后来问老总，老总说。...

复制书本上三大框架的项目，运行调试时遇到： Could not open JDBC Connection for transaction; nested exc: 具体的错误提示如下： HTTP Status 500 - type Exception report message description The server encountered an int

浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatis: 浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: type Ex...

Could not get JDBC Connection; nested exception is org.apache.tomcat.jdbc.pool.PoolExhaustedExceptio: &lt;bean id="calMysqlDataSource" class="org.apache.tomcat.jdbc.pool.DataSource"&gt; &lt;property name="driverClassName" value="${jdbc.driver}" /&gt; &lt;property name="url" value="$

java SQLserver JDBC 连接报错Connections could not be acquired from the underlying database!: Caused by: org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested excep...

Mariadb Could not get JDBC Connection; nested exception is java.sql.SQLException: 自己创建的项目数组选择的是mariadb，但是项目跑起来后，无法获取数据连接，经过多番查找，终于找到原因了！ 1.mariadb Connection strings 连接地址，我找着网上配置之后连接不上。 2.网上提供的是url为：jdbc:maria://localhost:3306/dbName。 3.我在国外网站查找到的是： Connection connection = Driv

解决方法dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver: 使用mysql+druid时报错这是报错信息折腾了好久。七月 08, 2019 2:39:14 下午 com.alibaba.druid.pool.DruidDataSource error 严重: dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver at com.alibaba.druid.util.J...

Linux下web项目报错Could not get JDBC Connection: 这个问题也花了挺多的时间，这里说一下解决问题的思路发现这个问题，我们可以新建一个程序来测试JDBC是否可以正常连接，把有异常的地方打印出来我们可以发现异常是publie key不被允许这里加上再次运行，运行成功然后把这些配置文件赋值到web项目的配置文件里到此，web项目可以成功连接jdbc 这里还有一个值得注意的地方，就是Linux对大小写是敏感的，...

ssm框架中数据库版本问题: 错误问题描述： HTTP Status 500 – Internal Server Error Type Exception Report Message Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception...

Could not get JDBC Connection,请教高手。: 请教个问题。在myeclipse启动tomcat，工程登录时，会报错： org.springframework.jdbc.CannotGetJdbcConnectionException: Could

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常

求助：SSM用c3p0连接mysql时Could not get JDBC Connection: 【控制台log】严重: Servlet.service() for servlet [spring_mvc] in context with path [/P_AI] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database! ### The error may exist in config/mybatis/mapper/CommAdminMapper.xml ### The error may involve cn.java.demo.mapper.CommAdminMapper.selectAdminByInfo ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!] with root cause com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source. at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1002) at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:293) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:348) at com.mchange.v2.c3p0.PoolBackedDataSource.getConnection(PoolBackedDataSource.java:120) at com.mchange.v2.c3p0.ComboPooledDataSource.getConnection(ComboPooledDataSource.java:601) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:82) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:68) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) at com.sun.proxy.$Proxy13.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy14.selectAdminByInfo(Unknown Source) at cn.java.demo.dao.impl.CommAdminDaoImpl.selectAdminByInfo(CommAdminDaoImpl.java:21) at cn.java.demo.logic.impl.CommAdminLogicImpl.selectAdminByInfo(CommAdminLogicImpl.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy18.selectAdminByInfo(Unknown Source) at cn.java.demo.controller.CommAdminController.admin(CommAdminController.java:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection: 最近在复习ssm时，做了一个小demo。在这其中就遇到许多问题，而出现这些问题时，让自己最大的一个感受就是多翻阅官方文档。虽然现在市场有许多书籍和视频，这些资源用归用。但是当你跟着这些教程走下去，最会有一些问题的。自己也有从中查看出来。例如: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache

SSM整合时报错org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectio...

获取jdbc连接失败，加载数据库驱动失败， Failed to obtain JDBC Connection; nested exception is java.sql.SQLException:: Causedby:org.springframework.jdbc.CannotGetJdbcConnectionException:FailedtoobtainJDBCConnection;nestedexceptionisjava.sql.SQLException:Failedtovalidateanewlyestablishedconnection. ...

The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'excepti...: The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'exception', 'round' or 'convertToNull'. The value 'convertToNull ' is not in this set.这个问题是解决以下问题...

求救.jdbc.CannotGetJdbcConnectionException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 ### The error may exist in class path resource [mybatis/mappers/WoServicesInfoPjMapper.xml] ### The error may involve com.haier.sqm.dao.WoServicesInfoPjDAO.woServicesInfoPjQueryCount ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.GeneratedMethodAccessor531.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:354) ... 51 more Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:66) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.haier.openplatform.cat.interceptor.BuriedPointMybatisInterceptor.intercept(BuriedPointMybatisInterceptor.java:50) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) at com.sun.proxy.$Proxy48.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) ... 57 more Caused by: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1137) at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:960) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4544) at com.alibaba.druid.filter.logging.LogFilter.dataSource_getConnection(LogFilter.java:827) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.filter.FilterAdapter.dataSource_getConnection(FilterAdapter.java:2723) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:938) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:930) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:102) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ... 74 more Caused by: java.sql.SQLException: validateConnection false at com.alibaba.druid.pool.DruidAbstractDataSource.validateConnection(DruidAbstractDataSource.java:1216) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1439) at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1861) 最近系统不时就曝出这种问题最后导致系统宕机 dubbo服务连不上

java.sql.SQLNonTransientConnectionException: 用户 ID 长度 (0) 超出 1 到 255 的范围: 使用Derby进行JUnit测试时, 报出了org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLNonTransientConnectionException:

不能连接SQL SERVER 2000 的解决方案: 本文转自：http://blog.csdn.net/java2000_net/archive/2008/04/05/2252640.aspx 本文收录了不能连接SQL Server ，报 The Network Adapter could not establish the connection 异常的所有遇到过的原因，并提供了图形化的排查向导。不过根据经验，没有升级到SP4的可能性最高。

关于java.sql.SQLNonTransientConnectionException: Could not create connection to database server. 的解决办法: 控制台报的错误：[ERROR] 2018-06-04 15:34:08.281 [RMI TCP Connection(5)-127.0.0.1] c.alibaba.druid.pool.DruidDataSource:870 - init datasource error, url: jdbc:mysql://localhost:3306/credit-demo?autoReconnect=t...

MySQLNonTransientConnectionException: Could not create connection to database server.: 新官方支持将com.mysql.jdbc.Driver改为com.mysql.cj.jdbc.Driver，此外mysql8.0是不需要建立ssl连接的，你需要显示关闭，即url中的useSSL=false；最后你需要设置CST，CST可视为美国、澳大利亚、古巴或中国的标准时间。serverTimezone是设置时区的. #jdbc.driver=com.mysql.jdbc.Driver jdb...

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionE...

服务器报错问题。org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Co: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

【已解决】Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: SEVERE: Servlet.service() for servlet [springmvc] in context with path [/rgl_v01] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exce

MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:: http://zeusami.iteye.com/blog/1112827 MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure com.mysql.jdbc.exceptions.jdbc4.Communi

关于jdbc的一个奇怪的问题: ``` public class JdbcUtils { private static Properties config = new Properties(); static { try { config.load(JdbcUtils.class.getClassLoader().getResourceAsStream("db.properties")); Class.forName(config.getProperty("jdbc.driverClass")); } catch (Exception e) { } } public static Connection getConn() throws SQLException { return DriverManager.getConnection(config.getProperty("jdbc.url"), config.getProperty("jdbc.username"), config.getProperty("jdbc.password")); } public static void main(String[] args) throws SQLException { System.out.println(getConn()); } } ``` 报了下面的错误： Exception in thread "main" java.sql.SQLException: Access denied for user 'root '@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:695) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:663) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:653) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:115) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1663) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:662) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:221) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at cn.njit.utils.JdbcUtils.getConn(JdbcUtils.java:20) at cn.njit.utils.JdbcUtils.main(JdbcUtils.java:24) 但是如果在main方法里面直接打印DriverManager.getConnection("jdbc:mysql:///sx?serverTimezone=Asia/Shanghai&useSSL=false", "root", "123456");是没有问题的

【MySQL】JDBC连接MySQL的一些问题以及解决办法: 1.Java使用mysql-jdbc连接MySQL出现如下警告：Establishing SSL connection without server's identityverification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+requirements SSL connection must be e

Failed to obtain JDBC Connection: 环境： spring cloud + myBatis + MySql5 报错信息如下： Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionExcep...

Spring框架中配置数据库(MySQL8.0)，配置不对，会出现Could not get JDBC Connection: Spring框架中配置数据库(MySQL8.0)属性文件(文件名.properties)，配置不对，会出现 Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLNonTransientConne...

EncodingFilter Could not get JDBC Connection; nested exception is java.sql: 先用客户端工具连接数据库看是否能连接如果能连接就去看你的EncodingFilter 是不是用户名密码写的对不对是不是直接copy别人的

Could not open JDBC Connection for transaction; nested exc [用户名密码错误异常】: HTTP Status 500 - Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is o

Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnec: Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 3000, active 16, maxActive 16"这个异常可能是因为druid连接池泄漏产生的异常。连接超时，active...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: mysql数据库老连接不上，而我的Mysql Workbench能正常运行九月12, 2018 8:46:22上午org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [springmvc] in context with path [/DCC] threw excepti...

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在中国程序员是青春饭吗？: 今年，我也32了，为了不给大家误导，咨询了猎头、圈内好友，以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助，记得帮我点赞哦。目录：你以为的人生一次又一次的伤害猎头界的真相如何应对互联网行业的「中年危机」一、你以为的人生刚入行时，拿着傲人的工资，想着好好干，以为我们的人生是这样的：等真到了那一天，你会发现，你的人生很可能是这样的： ...

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用HttpClient类实现查询申通快递的功能下载: 用HttpClient类实现查询申通快递的功能。示例请见http://www.ickd.cn/shentong.html 相关下载链接：[url=//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo]//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo[/url]

maven的需使用的包下载: maven的jar包，解压即可使用，解压到某个目录，即可使用相关下载链接：[url=//download.csdn.net/download/zxfryp909012366/9375921?utm_source=bbsseo]//download.csdn.net/download/zxfryp909012366/9375921?utm_source=bbsseo[/url]

我们是很有底线的

Could not get JDBC Connection; nested exception is java.sql.SQLException: ${jdbc.driver} 22222224234: 在一个SSM分布式项目中一个服务报错： ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: ${...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cann 22222224234: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user '16572'@'localhost' 试遍了网上的方法都没有解决我的问题，...

[已解决] mysql8 Could not get JDBC Connection 22222224234: 问题描述、简单贴下报错信息 ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedExce...

Could not get JDBC Connection; nested exception is java.sql.SQLException: interr 22222224234: 程序运行一段时间后，出现下面异常。偶尔出现。数据库sqlserver 2019-03-25 16:00:08,887 ERROR impl.OrderServiceImpl.selectOrderB

解决： java.net.ConnectException: Connection refused: connect 22222224234: java.net.ConnectException: Connection refused: connect 1. 报错如上。 2. 原因和解决： 1）端口号被占用：杀死占用端口号（一般为8080）的进程，释放端口；彻底关闭 Tomcat 服务器，或者重新启动项目。 2）使用以下命令检查服务器中允许的最大进程数：ulimit -u。如果将此值设置为较低值，例如1024，则使用以下...

Could not get JDBC Connection 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver' ### The error may exist in cn/drzk/wanda/cinema/dao/form/dao/TicketsFromDao.java (best guess) ### The error may involve cn.drzk.wanda.cinema.dao.form.dao.TicketsFromDao.count ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver'

数据库连接异常，无法获得Jdbc连接异常 22222224234: 求大神告诉原因以及解决办法,谢谢！

报Could not get JDBC Connection的错误 22222224234: 之前用的都是mysql数据库，这次的项目需要用到Oracle数据库，在搭好环境后进行数据库连接测试时报Could not get JDBC Connection;的错误，详细错误如下： ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nes...

java.sql.SQLException: com.mysql.jdbc.Driver 22222224234: 缺少jdbc对mysql的jar 在 pom.xml 中，加入 mysql 的 maven 引用。 &lt;dependency&gt; &lt;groupId&gt;mysql&lt;/groupId&gt; &lt;artifactId&gt;mysql-connector-java&lt;/artifactId&gt; &lt;version&gt;5.1.38&...

Could not get JDBC Connection; nested exception is java.sql.SQLException: Java d 22222224234: Could not get JDBC Connection; nested exception is java.sql.SQLException: Java does not support the 最近在摸索tapestry5，07年就出现的技术为啥资料如此至少哦， spring+tapestry5 +mysql 在连接数据库的时候，提示：Could not get ...

ssm框架，无法访问数据库Could not get JDBC Connection 22222224234: 用的德鲁伊连接池，先看applicationContext-dao.xml里的配置 ``` ``` 这样的话，控制台输出： 2017-12-28 12:43:58,209DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,214DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[org.springframework.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:43:58,222DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,317DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,335DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,366DEBUG[org.springframework.jdbc.datasource.DataSourceUtils] - 2017-12-28 12:43:58,447INFO[com.alibaba.druid.pool.DruidDataSource] - 一直显示等待，后来加了个maxWait属性，时间是5秒，然后才开始报错，如下： 2017-12-28 12:47:41,261DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,264DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[org.springframework.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:47:41,270DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,338DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,348DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,378DEBUG[org.springframework.jdbc.datasource.DataSourceUtils] - 2017-12-28 12:47:41,472INFO[com.alibaba.druid.pool.DruidDataSource] - 2017-12-28 12:47:46,473WARN[com.alibaba.druid.pool.DruidDataSource] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.springframework.jdbc.datasource.DataSourceTransactionManager] - 2017-12-28 12:47:51,478DEBUG[org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver] - <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} id, title, sell_point, price, num, barcode, image, cid, status, created, updated select distinct from tb_item order by ${orderByClause} select from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item insert into tb_item (id, title, sell_point, price, num, barcode, image, cid, status, created, updated) values (#{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}) insert into tb_item id, title, sell_point, price, num, barcode, image, cid, status, created, updated, #{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}, select count(*) from tb_item update tb_item id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP}, update tb_item set id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP} update tb_item title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP}, where id = #{id,jdbcType=BIGINT} update tb_item set title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP} where id = #{id,jdbcType=BIGINT} ``` 上面是逆向工程的mapper，后来我自己写了个TestMapper,还是出现同样的问题: ![图片说明](https://img-ask.csdn.net/upload/201712/28/1514454719_724728.png) 另外navicat访问数据库没问题。我想会不会是连接池配置的问题，也许那些配置可能导致这种情况？？

报错：java.sql.SQLException: com.mysql.cj.jdbc.Driver 22222224234: 在IDEA里用Spring Initializr创建了一个SpringBoot项目，mybatis链接mysql数据库时报以下错误 2019-09-23 15:23:19.211 INFO 4568 --- [nio-8888-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/demo] : Initializing Spring DispatcherSe...

Could not get JDBC Connection; nested exception解决方法 22222224234: 运行程序时一直出现这个，使用的mysql是8.0.17，试了很多方法后才发现是数据库版本的问题。错误如下到最后才发现是pom.xml中的版本号不对应导致的，将版本号改过来就行。如下所示： <dependency> <groupId>mysql</groupId> <artifactId>mysql-...

Mysql版本的相关问题：com.mysql.cj.jdbc.Driver和com.mysql.jdbc.Driver 22222224234: 1. 在使用mysql时控制台日志报错如下：Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loadi...

出现错误Could not get JDBC Connection; nested exception is java.sql.SQLException:com.mysql.cj.jdbc.Drive... 22222224234: 问题描述：　　使用JDBC连接MySQL数据库时出现问题。问题截图：　　解决：　　原来使用的JDBC驱动包是mysql-connector-java-5.1.18版本的。　　改为mysql-connector-java-8.0.16版本。　　问题解决转载于:https://www.cnblogs.com/letherwave/p/1153...

Could not get JDBC Connection; nested exception is java.sql.SQLException 22222224234: 今天用换了台机器做我的毕业设计（数据库用的是oracle），配置好后启动服务器运行程序，出现了如下错误： [color=red]Could not get JDBC Connection; nested exception is java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection...

解决Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException 22222224234: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user ‘15916’@‘localhost’ (using password: YES)...

关于使用ideal 出现Could not get JDBC Connection问题 22222224234: 关于使用ideal 出现Could not get JDBC Connection问题 org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot load JDBC driver...

idea连接mysql数据库报java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeExcepti 22222224234: 出错场景：使用idea连接mysql（5.2版本）报错： java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'ÖÐ¹ú±ê×¼Ê±¼ä' is unrecognized or represents more th...

Could not get JDBC Connection 22222224234: 刚照着网上搭的ssm框架，写了个简单的查询user表，报错如下：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframewor...

RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理 22222224234: RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理 1. 出现这个错误信息的原因 2. 如何处理该错误信息 3. 如何判断查询是否使用内部临时表在使用 RDS 的过程中，有时会碰到下面的出错信息： the table ‘/home/mysq...

在系统访问高峰期出现无法获取数据库连接的异常 22222224234: 最近遇到一个棘手的问题,请教各位能否查明报出异常的原因： 1：正常情况下系统运行没有问题，但是系统访问高峰情况下会出现，日志如下，这段日志出现一段时间之后，应用就会假死，持续1分钟左右之后恢复。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException : javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS The error may exist in com/huifu/muser/common/dal/dao/MerUsrMapMapper.xml The error may involve com.huifu.muser.common.dal.dao.MerUsrMapMapper.queryMerUsrMap The error occurred while executing a query Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: javax.resource.ResourceE xception: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:365) at com.sun.proxy.$Proxy157.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:195) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:124) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:90) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at com.sun.proxy.$Proxy158.queryMerUsrMap(Unknown Source) at com.huifu.muser.service.core.cash.impl.CashReqServiceImpl.checkMerUsrMap(CashReqServiceImpl.java:267) at com.huifu.muser.biz.cash.impl.CashReqManager2Impl.cashConfirmReq(CashReqManager2Impl.java:211) at com.huifu.muser.webapp.controller.cash.CashController.cashConfirm2(CashController.java:200) at sun.reflect.GeneratedMethodAccessor2127.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 2：我的应用框架是 spring3.0.5+mybatis3.1.1+JBoss7.1+oracle11+jdk1.6 3：负载均衡 netscaler,两台虚拟机，四核，内存8G,jvm启动参数配置如下： -XX:+UseCompressedOops -XX:+TieredCompilation -Xms4096m -Xmx4096m -Xmn1024m -XX:PermSize=256M -XX:MaxPermSize=512M -Djava.net.preferIPv4Stack=true -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -XX:SurvivorRatio=8 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 -Xnoclassgc -XX:+CMSClassUnloadingEnabled 4：我的数据库链接池是配置在jboss的配置文件standalone-ha.xml中，连接池配置为18-300，高峰期能达到300，即应用确实与数据库建立300链接，但是活跃链接在15左右，配置如下 ![图片说明](https://img-ask.csdn.net/upload/201601/20/1453293770_127311.png)

JAVAweb项目出现Could not get JDBC Connection，与Navicat连接MySQL1130，2003问题 22222224234: 在登陆自己基于SSM项目出现Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableCon...

JDBC连接碰到的一些问题解决方法 22222224234: 今天在idea上学习JDBC驱动链接MySQL进行查询.MySQL 5.7.22, JDK9.写完语句之后,报了一连串的错误,首先是Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. 我使用的是mysql-connector-ja...

错误 java.sql.SQLNonTransientConnectionException: CLIENT_PLUGIN_AUTH is required 22222224234: 一. 由于使用的是springboot默认的 mysql-connector-java 版本是八点多, 导致报了这个错误 Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically...

org.dom4j.DocumentException: Connection timed out: connect Nested exception: Connection timed out: c 22222224234: 框架：struts2 2.2.3 + hibernate 3.0 所报异常： exception java.lang.reflect.InvocationTargetException sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.

Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'ro 22222224234: 报了Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)错误的意思是找不到数据连接。也就是连接不到数据库原因是你的用户名或密码错误。这里有其中的一种解决方案。注

Could not get JDBC Connection; com.mysql.cj.jdbc.Driver？ 22222224234: 四月 17, 2019 2:15:44 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [taotao-manager] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver ### The error may exist in com/taotao/mapper/TbItemMapper.xml ### The error may involve com.taotao.mapper.TbItemMapper.selectByPrimaryKey ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver] with root cause java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at com.alibaba.druid.util.JdbcUtils.createDriver(JdbcUtils.java:518) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:583) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:915) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:911) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:98) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) at com.sun.proxy.$Proxy30.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:163) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at com.sun.proxy.$Proxy31.selectByPrimaryKey(Unknown Source) at com.taotao.service.impl.ItemServiceImpl.getItemById(ItemServiceImpl.java:24) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:267) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy34.getItemById(Unknown Source) at com.taotao.controller.ItemController.getItemById(ItemController.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) db.properties配置为 jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/taotao?useSSL=false&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF8 jdbc.username=root jdbc.password=123 连接池配置

原来很正常的hibernate连接mysql，突然报：java.net.ConnectException: Connection refused: connect 22222224234: 大概两周前用myeclipse做的hibernate连接mysql的小测试，只是完成很简单的功能，很正常，今天拿来再试时，突然报下面的错误： Could not connect to: : 4070

nested exception is java.sql.SQLException: 无效的列索引 22222224234: Exception occurred during processing request: PreparedStatementCallback; invalid ResultSet access fo

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connectio 22222224234: 严重: StandardWrapper.Throwableorg.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections co...

Could not get JDBC Connection; myeclipse中java项目导入的问题 22222224234: 严重: Exception starting filter CommonFilter org.mybatis.spring.MyBatisSystemException: nested excepti

成功解决java.net.ConnectException: Connection refused: connect 22222224234: 解决问题 java.net.ConnectException: Connection refused: connect 解决方法可知端口被占用， T1、释放端口，重新启动端口即可！ T2、换一个别的端口亦可！如果以上办法没解决，请参考网友的解释参考网友解释因为SecureRandom的创建操作花费了大量时间，几百秒，所以tomcat启动很...

Could not get JDBC Connection的问题，请高手指点一下，谢谢！！！ 22222224234: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

maven项目用tomcat启动一直无法连接数据库！！Could not get JDBC Connection 22222224234: 十二月 04, 2017 12:54:55 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service()

Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could not 22222224234: 学习慕课上的一个项目，使用的是Spring+Mybatis+c3po 学习搭建框架。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.sprin...

诡异的报错：java.sql.SQLException: Connections could not be acquired from the underlyi 22222224234: 以下是我截取启动tomcat时候报错的关键几处：信息: Initializing Spring root WebApplicationContext2011-04-04 12:38:59,780 E

出现 java.net.ConnectException: Connection refused 异常的原因及解决方法 22222224234: 1 异常描述在启动 Tomcat 服务器的时候，控制台一直输出异常信息，然后停止服务器，报出如下异常：2 异常原因通过观察上图中被标记出来的异常信息，咱们可以知道 java.net.ConnectException: Connection refused 此异常，为：连接被拒绝异常。之前也在网上搜索过该异常的原因，大多数人给出的答案是端口号被占用，或者在启动本次 Tomcat 服务器的之前“关闭

Spring+MyBatis整合后测试出现could not get JDBC connection原因 22222224234: 配置文件jdbc.properties里面每一行设置后面存在空格，导致解析出错！

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot报错 22222224234: Caused by: org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot create JDBC driver of cla...

springboot整合mybatis遇到的错误CannotGetJdbcConnectionException 22222224234: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: The server time zone value 'ÖÐ¹ú...

nested exception is java.sql.SQLException: 内部错误 22222224234: 查看下是不是有数据为空，而数据库不能为空的

记Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could no 22222224234: 搭建ssm项目时遇到的问题解决：url加上：useJDBCCompliantTimezoneShift=true&serverTimezone=UTC jdbc.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&serverTimezone=UTC...

tomcat 启动后访问数据库Could not open JDBC Connection for transaction 22222224234: ubuntu系统下 tomcat 启动后访问数据库报错： org.springframework.transaction.CannotCreateTransactionException: Coul

org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for 22222224234: 问题？org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction 整合大三大框架的时候，单独测试没问题，在请求action的时候，会出现以下问题： org.springframework.transaction.Canno

SpringMVC 无法获取连接报错 22222224234: 在进行单元测试的时候，发现报错 Could not get JDBC Connection; nested exception is java.sql.SQLException: jdbc.properties配置文件信息 driver=com.mysql.jdbc.Driver url=jdbc:mysql://127.0.0.1:3306/seckill?useUnicode=true&

nested exception is java.sql.SQLException: 数字溢出的问题解决 22222224234: 错误现象今天调试一段代码，里面有个逻辑，要批量取数据；当运行取到第二批数据的时候，程序报了如下错误： org.springframework.jdbc.UncategorizedSQLException: StatementCallback; uncategorized SQLException for SQL [select * from (select t.*,rownum rnm

SpringBoot+MyBaits+MySQL连接数据库出错，求大神指点配置 22222224234: 报错如下： 2017-11-19 15:13:40.009 ERROR 15152 --- [nio-8090-exec-2] e.n.y.o.service.LoginModuleService : checkUserInfo: Error message is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) ### The error may exist in file [D:\Spring\JavaWeb\OnlineBookstore\target\classes\mybatis\mapper\UserInfoMapper.xml] ### The error may involve edu.javaee.onlinebookstore.mapper.UserInfoMapper.isNameExist ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) application.properties配置如下： server.port = 8090 spring.mvc.view.prefix = /WEB-INF/jsp/ spring.mvc.view.suffix = .jsp spring.datasource.driverClassName = com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://localhost:3306/onlinebookstore?useUnicode=true&characterEncoding=utf8&useSSL=false spring.datasource.username = root spring.datasource.password = root mybatis.typeAliasesPackage = edu.javaee.onlinebookstore.domain mybatis.config-location = classpath:mybatis/mybatis-config.xml mybatis.mapper-locations = classpath:mybatis/mapper/*Mapper.xml logging.file = log/service.log 检查过数据库密码正确，可以通过Navicat访问。

Could not get JDBC Connection的问题，请高手指点一下！！！ 22222224234: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

使用dbcp连接池的时候 org.springframework.jdbc.CannotGetJdbcConnectionException: 22222224234: 异常如下：五月 07, 2017 5:30:03 下午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.servic

nested exception is java.sql.SQLException: com.mysql.jdbc.Driver 22222224234: 公司项目本来是 oracle 驱动 + druid 数据源配置，以及多数据源配置。修改为 mysql+druid+单数据源。然后报错如下：说一下错误原因，错误原因也属于基础了。项目中，没有 mysql 驱动的jar 。第一次报错，是 druid 数据源配置，然后，找不到错误原因，更改成dbcp 链接，还是报错如下。一下午，就百度+谷歌这个问题了。后来问老总，老总说。...

复制书本上三大框架的项目，运行调试时遇到： Could not open JDBC Connection for transaction; nested exc 22222224234: 具体的错误提示如下： HTTP Status 500 - type Exception report message description The server encountered an int

浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatis 22222224234: 浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: type Ex...

Could not get JDBC Connection; nested exception is org.apache.tomcat.jdbc.pool.PoolExhaustedExceptio 22222224234: &lt;bean id="calMysqlDataSource" class="org.apache.tomcat.jdbc.pool.DataSource"&gt; &lt;property name="driverClassName" value="${jdbc.driver}" /&gt; &lt;property name="url" value="$

java SQLserver JDBC 连接报错Connections could not be acquired from the underlying database! 22222224234: Caused by: org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested excep...

Mariadb Could not get JDBC Connection; nested exception is java.sql.SQLException 22222224234: 自己创建的项目数组选择的是mariadb，但是项目跑起来后，无法获取数据连接，经过多番查找，终于找到原因了！ 1.mariadb Connection strings 连接地址，我找着网上配置之后连接不上。 2.网上提供的是url为：jdbc:maria://localhost:3306/dbName。 3.我在国外网站查找到的是： Connection connection = Driv

解决方法dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver 22222224234: 使用mysql+druid时报错这是报错信息折腾了好久。七月 08, 2019 2:39:14 下午 com.alibaba.druid.pool.DruidDataSource error 严重: dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver at com.alibaba.druid.util.J...

Linux下web项目报错Could not get JDBC Connection 22222224234: 这个问题也花了挺多的时间，这里说一下解决问题的思路发现这个问题，我们可以新建一个程序来测试JDBC是否可以正常连接，把有异常的地方打印出来我们可以发现异常是publie key不被允许这里加上再次运行，运行成功然后把这些配置文件赋值到web项目的配置文件里到此，web项目可以成功连接jdbc 这里还有一个值得注意的地方，就是Linux对大小写是敏感的，...

ssm框架中数据库版本问题 22222224234: 错误问题描述： HTTP Status 500 – Internal Server Error Type Exception Report Message Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception...

Could not get JDBC Connection,请教高手。 22222224234: 请教个问题。在myeclipse启动tomcat，工程登录时，会报错： org.springframework.jdbc.CannotGetJdbcConnectionException: Could

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常

求助：SSM用c3p0连接mysql时Could not get JDBC Connection 22222224234: 【控制台log】严重: Servlet.service() for servlet [spring_mvc] in context with path [/P_AI] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database! ### The error may exist in config/mybatis/mapper/CommAdminMapper.xml ### The error may involve cn.java.demo.mapper.CommAdminMapper.selectAdminByInfo ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!] with root cause com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source. at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1002) at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:293) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:348) at com.mchange.v2.c3p0.PoolBackedDataSource.getConnection(PoolBackedDataSource.java:120) at com.mchange.v2.c3p0.ComboPooledDataSource.getConnection(ComboPooledDataSource.java:601) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:82) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:68) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) at com.sun.proxy.$Proxy13.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy14.selectAdminByInfo(Unknown Source) at cn.java.demo.dao.impl.CommAdminDaoImpl.selectAdminByInfo(CommAdminDaoImpl.java:21) at cn.java.demo.logic.impl.CommAdminLogicImpl.selectAdminByInfo(CommAdminLogicImpl.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy18.selectAdminByInfo(Unknown Source) at cn.java.demo.controller.CommAdminController.admin(CommAdminController.java:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection 22222224234: 最近在复习ssm时，做了一个小demo。在这其中就遇到许多问题，而出现这些问题时，让自己最大的一个感受就是多翻阅官方文档。虽然现在市场有许多书籍和视频，这些资源用归用。但是当你跟着这些教程走下去，最会有一些问题的。自己也有从中查看出来。例如: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache

SSM整合时报错org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectio...

获取jdbc连接失败，加载数据库驱动失败， Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: 22222224234: Causedby:org.springframework.jdbc.CannotGetJdbcConnectionException:FailedtoobtainJDBCConnection;nestedexceptionisjava.sql.SQLException:Failedtovalidateanewlyestablishedconnection. ...

The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'excepti... 22222224234: The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'exception', 'round' or 'convertToNull'. The value 'convertToNull ' is not in this set.这个问题是解决以下问题...

求救.jdbc.CannotGetJdbcConnectionException 22222224234: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 ### The error may exist in class path resource [mybatis/mappers/WoServicesInfoPjMapper.xml] ### The error may involve com.haier.sqm.dao.WoServicesInfoPjDAO.woServicesInfoPjQueryCount ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.GeneratedMethodAccessor531.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:354) ... 51 more Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:66) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.haier.openplatform.cat.interceptor.BuriedPointMybatisInterceptor.intercept(BuriedPointMybatisInterceptor.java:50) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) at com.sun.proxy.$Proxy48.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) ... 57 more Caused by: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1137) at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:960) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4544) at com.alibaba.druid.filter.logging.LogFilter.dataSource_getConnection(LogFilter.java:827) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.filter.FilterAdapter.dataSource_getConnection(FilterAdapter.java:2723) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:938) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:930) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:102) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ... 74 more Caused by: java.sql.SQLException: validateConnection false at com.alibaba.druid.pool.DruidAbstractDataSource.validateConnection(DruidAbstractDataSource.java:1216) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1439) at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1861) 最近系统不时就曝出这种问题最后导致系统宕机 dubbo服务连不上

java.sql.SQLNonTransientConnectionException: 用户 ID 长度 (0) 超出 1 到 255 的范围 22222224234: 使用Derby进行JUnit测试时, 报出了org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLNonTransientConnectionException:

不能连接SQL SERVER 2000 的解决方案 22222224234: 本文转自：http://blog.csdn.net/java2000_net/archive/2008/04/05/2252640.aspx 本文收录了不能连接SQL Server ，报 The Network Adapter could not establish the connection 异常的所有遇到过的原因，并提供了图形化的排查向导。不过根据经验，没有升级到SP4的可能性最高。

关于java.sql.SQLNonTransientConnectionException: Could not create connection to database server. 的解决办法 22222224234: 控制台报的错误：[ERROR] 2018-06-04 15:34:08.281 [RMI TCP Connection(5)-127.0.0.1] c.alibaba.druid.pool.DruidDataSource:870 - init datasource error, url: jdbc:mysql://localhost:3306/credit-demo?autoReconnect=t...

MySQLNonTransientConnectionException: Could not create connection to database server. 22222224234: 新官方支持将com.mysql.jdbc.Driver改为com.mysql.cj.jdbc.Driver，此外mysql8.0是不需要建立ssl连接的，你需要显示关闭，即url中的useSSL=false；最后你需要设置CST，CST可视为美国、澳大利亚、古巴或中国的标准时间。serverTimezone是设置时区的. #jdbc.driver=com.mysql.jdbc.Driver jdb...

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionE...

服务器报错问题。org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Co 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

【已解决】Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException 22222224234: SEVERE: Servlet.service() for servlet [springmvc] in context with path [/rgl_v01] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exce

MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 22222224234: http://zeusami.iteye.com/blog/1112827 MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure com.mysql.jdbc.exceptions.jdbc4.Communi

关于jdbc的一个奇怪的问题 22222224234: ``` public class JdbcUtils { private static Properties config = new Properties(); static { try { config.load(JdbcUtils.class.getClassLoader().getResourceAsStream("db.properties")); Class.forName(config.getProperty("jdbc.driverClass")); } catch (Exception e) { } } public static Connection getConn() throws SQLException { return DriverManager.getConnection(config.getProperty("jdbc.url"), config.getProperty("jdbc.username"), config.getProperty("jdbc.password")); } public static void main(String[] args) throws SQLException { System.out.println(getConn()); } } ``` 报了下面的错误： Exception in thread "main" java.sql.SQLException: Access denied for user 'root '@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:695) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:663) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:653) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:115) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1663) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:662) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:221) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at cn.njit.utils.JdbcUtils.getConn(JdbcUtils.java:20) at cn.njit.utils.JdbcUtils.main(JdbcUtils.java:24) 但是如果在main方法里面直接打印DriverManager.getConnection("jdbc:mysql:///sx?serverTimezone=Asia/Shanghai&useSSL=false", "root", "123456");是没有问题的

【MySQL】JDBC连接MySQL的一些问题以及解决办法 22222224234: 1.Java使用mysql-jdbc连接MySQL出现如下警告：Establishing SSL connection without server's identityverification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+requirements SSL connection must be e

Failed to obtain JDBC Connection 22222224234: 环境： spring cloud + myBatis + MySql5 报错信息如下： Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionExcep...

Spring框架中配置数据库(MySQL8.0)，配置不对，会出现Could not get JDBC Connection 22222224234: Spring框架中配置数据库(MySQL8.0)属性文件(文件名.properties)，配置不对，会出现 Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLNonTransientConne...

EncodingFilter Could not get JDBC Connection; nested exception is java.sql 22222224234: 先用客户端工具连接数据库看是否能连接如果能连接就去看你的EncodingFilter 是不是用户名密码写的对不对是不是直接copy别人的

Could not open JDBC Connection for transaction; nested exc [用户名密码错误异常】 22222224234: HTTP Status 500 - Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is o

Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnec 22222224234: Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 3000, active 16, maxActive 16"这个异常可能是因为druid连接池泄漏产生的异常。连接超时，active...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException 22222224234: mysql数据库老连接不上，而我的Mysql Workbench能正常运行九月12, 2018 8:46:22上午org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [springmvc] in context with path [/DCC] threw excepti...

大学四年自学走来，这些私藏的实用工具/学习网站我贡献出来了 22222224234: 大学四年，看课本是不可能一直看课本的了，对于学习，特别是自学，善于搜索网上的一些资源来辅助，还是非常有必要的，下面我就把这几年私藏的各种资源，网站贡献出来给你们。主要有：电子书搜索、实用工具、在线视频学习网站、非视频学习网站、软件下载、面试/求职必备网站。注意：文中提到的所有资源，文末我都给你整理好了，你们只管拿去，如果觉得不错，转发、分享就是最大的支持了。一、电子书搜索对于大部分程序员...

在中国程序员是青春饭吗？ 22222224234: 今年，我也32了，为了不给大家误导，咨询了猎头、圈内好友，以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助，记得帮我点赞哦。目录：你以为的人生一次又一次的伤害猎头界的真相如何应对互联网行业的「中年危机」一、你以为的人生刚入行时，拿着傲人的工资，想着好好干，以为我们的人生是这样的：等真到了那一天，你会发现，你的人生很可能是这样的： ...

程序员请照顾好自己，周末病魔差点一套带走我。 22222224234: 程序员在一个周末的时间，得了重病，差点当场去世，还好及时挽救回来了。

CCNA经典教材CCNA考试下载333333334234: CCNA的经典教材，全英文。主要用于熟悉网络方面的英文。相关下载链接：[url=//download.csdn.net/download/thinghuawxj/2844955?utm_source=bbsseo]//download.csdn.net/download/thinghuawxj/2844955?utm_source=bbsseo[/url]

用HttpClient类实现查询申通快递的功能下载333333334234: 用HttpClient类实现查询申通快递的功能。示例请见http://www.ickd.cn/shentong.html 相关下载链接：[url=//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo]//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo[/url]

maven的需使用的包下载333333334234: maven的jar包，解压即可使用，解压到某个目录，即可使用相关下载链接：[url=//download.csdn.net/download/zxfryp909012366/9375921?utm_source=bbsseo]//download.csdn.net/download/zxfryp909012366/9375921?utm_source=bbsseo[/url]

我们是很有底线的

Could not get JDBC Connection; nested exception is java.sql.SQLException: ${jdbc.driver} 22222224234: 在一个SSM分布式项目中一个服务报错： ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: ${...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cann 22222224234: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user '16572'@'localhost' 试遍了网上的方法都没有解决我的问题，...

[已解决] mysql8 Could not get JDBC Connection 22222224234: 问题描述、简单贴下报错信息 ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedExce...

Could not get JDBC Connection; nested exception is java.sql.SQLException: interr 22222224234: 程序运行一段时间后，出现下面异常。偶尔出现。数据库sqlserver 2019-03-25 16:00:08,887 ERROR impl.OrderServiceImpl.selectOrderB

解决： java.net.ConnectException: Connection refused: connect 22222224234: java.net.ConnectException: Connection refused: connect 1. 报错如上。 2. 原因和解决： 1）端口号被占用：杀死占用端口号（一般为8080）的进程，释放端口；彻底关闭 Tomcat 服务器，或者重新启动项目。 2）使用以下命令检查服务器中允许的最大进程数：ulimit -u。如果将此值设置为较低值，例如1024，则使用以下...

Could not get JDBC Connection 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver' ### The error may exist in cn/drzk/wanda/cinema/dao/form/dao/TicketsFromDao.java (best guess) ### The error may involve cn.drzk.wanda.cinema.dao.form.dao.TicketsFromDao.count ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver'

数据库连接异常，无法获得Jdbc连接异常 22222224234: 求大神告诉原因以及解决办法,谢谢！

报Could not get JDBC Connection的错误 22222224234: 之前用的都是mysql数据库，这次的项目需要用到Oracle数据库，在搭好环境后进行数据库连接测试时报Could not get JDBC Connection;的错误，详细错误如下： ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nes...

java.sql.SQLException: com.mysql.jdbc.Driver 22222224234: 缺少jdbc对mysql的jar 在 pom.xml 中，加入 mysql 的 maven 引用。 &lt;dependency&gt; &lt;groupId&gt;mysql&lt;/groupId&gt; &lt;artifactId&gt;mysql-connector-java&lt;/artifactId&gt; &lt;version&gt;5.1.38&...

Could not get JDBC Connection; nested exception is java.sql.SQLException: Java d 22222224234: Could not get JDBC Connection; nested exception is java.sql.SQLException: Java does not support the 最近在摸索tapestry5，07年就出现的技术为啥资料如此至少哦， spring+tapestry5 +mysql 在连接数据库的时候，提示：Could not get ...

ssm框架，无法访问数据库Could not get JDBC Connection 22222224234: 用的德鲁伊连接池，先看applicationContext-dao.xml里的配置 ``` ``` 这样的话，控制台输出： 2017-12-28 12:43:58,209DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,214DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[org.springframework.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:43:58,222DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,317DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,335DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,366DEBUG[org.springframework.jdbc.datasource.DataSourceUtils] - 2017-12-28 12:43:58,447INFO[com.alibaba.druid.pool.DruidDataSource] - 一直显示等待，后来加了个maxWait属性，时间是5秒，然后才开始报错，如下： 2017-12-28 12:47:41,261DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,264DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[org.springframework.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:47:41,270DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,338DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,348DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,378DEBUG[org.springframework.jdbc.datasource.DataSourceUtils] - 2017-12-28 12:47:41,472INFO[com.alibaba.druid.pool.DruidDataSource] - 2017-12-28 12:47:46,473WARN[com.alibaba.druid.pool.DruidDataSource] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.springframework.jdbc.datasource.DataSourceTransactionManager] - 2017-12-28 12:47:51,478DEBUG[org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver] - <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} id, title, sell_point, price, num, barcode, image, cid, status, created, updated select distinct from tb_item order by ${orderByClause} select from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item insert into tb_item (id, title, sell_point, price, num, barcode, image, cid, status, created, updated) values (#{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}) insert into tb_item id, title, sell_point, price, num, barcode, image, cid, status, created, updated, #{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}, select count(*) from tb_item update tb_item id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP}, update tb_item set id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP} update tb_item title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP}, where id = #{id,jdbcType=BIGINT} update tb_item set title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP} where id = #{id,jdbcType=BIGINT} ``` 上面是逆向工程的mapper，后来我自己写了个TestMapper,还是出现同样的问题: ![图片说明](https://img-ask.csdn.net/upload/201712/28/1514454719_724728.png) 另外navicat访问数据库没问题。我想会不会是连接池配置的问题，也许那些配置可能导致这种情况？？

报错：java.sql.SQLException: com.mysql.cj.jdbc.Driver 22222224234: 在IDEA里用Spring Initializr创建了一个SpringBoot项目，mybatis链接mysql数据库时报以下错误 2019-09-23 15:23:19.211 INFO 4568 --- [nio-8888-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/demo] : Initializing Spring DispatcherSe...

Could not get JDBC Connection; nested exception解决方法 22222224234: 运行程序时一直出现这个，使用的mysql是8.0.17，试了很多方法后才发现是数据库版本的问题。错误如下到最后才发现是pom.xml中的版本号不对应导致的，将版本号改过来就行。如下所示： <dependency> <groupId>mysql</groupId> <artifactId>mysql-...

Mysql版本的相关问题：com.mysql.cj.jdbc.Driver和com.mysql.jdbc.Driver 22222224234: 1. 在使用mysql时控制台日志报错如下：Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loadi...

出现错误Could not get JDBC Connection; nested exception is java.sql.SQLException:com.mysql.cj.jdbc.Drive... 22222224234: 问题描述：　　使用JDBC连接MySQL数据库时出现问题。问题截图：　　解决：　　原来使用的JDBC驱动包是mysql-connector-java-5.1.18版本的。　　改为mysql-connector-java-8.0.16版本。　　问题解决转载于:https://www.cnblogs.com/letherwave/p/1153...

Could not get JDBC Connection; nested exception is java.sql.SQLException 22222224234: 今天用换了台机器做我的毕业设计（数据库用的是oracle），配置好后启动服务器运行程序，出现了如下错误： [color=red]Could not get JDBC Connection; nested exception is java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection...

解决Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException 22222224234: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user ‘15916’@‘localhost’ (using password: YES)...

关于使用ideal 出现Could not get JDBC Connection问题 22222224234: 关于使用ideal 出现Could not get JDBC Connection问题 org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot load JDBC driver...

idea连接mysql数据库报java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeExcepti 22222224234: 出错场景：使用idea连接mysql（5.2版本）报错： java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'ÖÐ¹ú±ê×¼Ê±¼ä' is unrecognized or represents more th...

Could not get JDBC Connection 22222224234: 刚照着网上搭的ssm框架，写了个简单的查询user表，报错如下：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframewor...

RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理 22222224234: RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理 1. 出现这个错误信息的原因 2. 如何处理该错误信息 3. 如何判断查询是否使用内部临时表在使用 RDS 的过程中，有时会碰到下面的出错信息： the table ‘/home/mysq...

在系统访问高峰期出现无法获取数据库连接的异常 22222224234: 最近遇到一个棘手的问题,请教各位能否查明报出异常的原因： 1：正常情况下系统运行没有问题，但是系统访问高峰情况下会出现，日志如下，这段日志出现一段时间之后，应用就会假死，持续1分钟左右之后恢复。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException : javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS The error may exist in com/huifu/muser/common/dal/dao/MerUsrMapMapper.xml The error may involve com.huifu.muser.common.dal.dao.MerUsrMapMapper.queryMerUsrMap The error occurred while executing a query Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: javax.resource.ResourceE xception: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:365) at com.sun.proxy.$Proxy157.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:195) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:124) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:90) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at com.sun.proxy.$Proxy158.queryMerUsrMap(Unknown Source) at com.huifu.muser.service.core.cash.impl.CashReqServiceImpl.checkMerUsrMap(CashReqServiceImpl.java:267) at com.huifu.muser.biz.cash.impl.CashReqManager2Impl.cashConfirmReq(CashReqManager2Impl.java:211) at com.huifu.muser.webapp.controller.cash.CashController.cashConfirm2(CashController.java:200) at sun.reflect.GeneratedMethodAccessor2127.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 2：我的应用框架是 spring3.0.5+mybatis3.1.1+JBoss7.1+oracle11+jdk1.6 3：负载均衡 netscaler,两台虚拟机，四核，内存8G,jvm启动参数配置如下： -XX:+UseCompressedOops -XX:+TieredCompilation -Xms4096m -Xmx4096m -Xmn1024m -XX:PermSize=256M -XX:MaxPermSize=512M -Djava.net.preferIPv4Stack=true -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -XX:SurvivorRatio=8 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 -Xnoclassgc -XX:+CMSClassUnloadingEnabled 4：我的数据库链接池是配置在jboss的配置文件standalone-ha.xml中，连接池配置为18-300，高峰期能达到300，即应用确实与数据库建立300链接，但是活跃链接在15左右，配置如下 ![图片说明](https://img-ask.csdn.net/upload/201601/20/1453293770_127311.png)

JAVAweb项目出现Could not get JDBC Connection，与Navicat连接MySQL1130，2003问题 22222224234: 在登陆自己基于SSM项目出现Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableCon...

JDBC连接碰到的一些问题解决方法 22222224234: 今天在idea上学习JDBC驱动链接MySQL进行查询.MySQL 5.7.22, JDK9.写完语句之后,报了一连串的错误,首先是Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. 我使用的是mysql-connector-ja...

错误 java.sql.SQLNonTransientConnectionException: CLIENT_PLUGIN_AUTH is required 22222224234: 一. 由于使用的是springboot默认的 mysql-connector-java 版本是八点多, 导致报了这个错误 Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically...

org.dom4j.DocumentException: Connection timed out: connect Nested exception: Connection timed out: c 22222224234: 框架：struts2 2.2.3 + hibernate 3.0 所报异常： exception java.lang.reflect.InvocationTargetException sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.

Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'ro 22222224234: 报了Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)错误的意思是找不到数据连接。也就是连接不到数据库原因是你的用户名或密码错误。这里有其中的一种解决方案。注

Could not get JDBC Connection; com.mysql.cj.jdbc.Driver？ 22222224234: 四月 17, 2019 2:15:44 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [taotao-manager] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver ### The error may exist in com/taotao/mapper/TbItemMapper.xml ### The error may involve com.taotao.mapper.TbItemMapper.selectByPrimaryKey ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver] with root cause java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at com.alibaba.druid.util.JdbcUtils.createDriver(JdbcUtils.java:518) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:583) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:915) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:911) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:98) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) at com.sun.proxy.$Proxy30.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:163) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at com.sun.proxy.$Proxy31.selectByPrimaryKey(Unknown Source) at com.taotao.service.impl.ItemServiceImpl.getItemById(ItemServiceImpl.java:24) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:267) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy34.getItemById(Unknown Source) at com.taotao.controller.ItemController.getItemById(ItemController.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) db.properties配置为 jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/taotao?useSSL=false&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF8 jdbc.username=root jdbc.password=123 连接池配置

原来很正常的hibernate连接mysql，突然报：java.net.ConnectException: Connection refused: connect 22222224234: 大概两周前用myeclipse做的hibernate连接mysql的小测试，只是完成很简单的功能，很正常，今天拿来再试时，突然报下面的错误： Could not connect to: : 4070

nested exception is java.sql.SQLException: 无效的列索引 22222224234: Exception occurred during processing request: PreparedStatementCallback; invalid ResultSet access fo

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connectio 22222224234: 严重: StandardWrapper.Throwableorg.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections co...

Could not get JDBC Connection; myeclipse中java项目导入的问题 22222224234: 严重: Exception starting filter CommonFilter org.mybatis.spring.MyBatisSystemException: nested excepti

成功解决java.net.ConnectException: Connection refused: connect 22222224234: 解决问题 java.net.ConnectException: Connection refused: connect 解决方法可知端口被占用， T1、释放端口，重新启动端口即可！ T2、换一个别的端口亦可！如果以上办法没解决，请参考网友的解释参考网友解释因为SecureRandom的创建操作花费了大量时间，几百秒，所以tomcat启动很...

Could not get JDBC Connection的问题，请高手指点一下，谢谢！！！ 22222224234: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

maven项目用tomcat启动一直无法连接数据库！！Could not get JDBC Connection 22222224234: 十二月 04, 2017 12:54:55 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service()

Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could not 22222224234: 学习慕课上的一个项目，使用的是Spring+Mybatis+c3po 学习搭建框架。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.sprin...

诡异的报错：java.sql.SQLException: Connections could not be acquired from the underlyi 22222224234: 以下是我截取启动tomcat时候报错的关键几处：信息: Initializing Spring root WebApplicationContext2011-04-04 12:38:59,780 E

出现 java.net.ConnectException: Connection refused 异常的原因及解决方法 22222224234: 1 异常描述在启动 Tomcat 服务器的时候，控制台一直输出异常信息，然后停止服务器，报出如下异常：2 异常原因通过观察上图中被标记出来的异常信息，咱们可以知道 java.net.ConnectException: Connection refused 此异常，为：连接被拒绝异常。之前也在网上搜索过该异常的原因，大多数人给出的答案是端口号被占用，或者在启动本次 Tomcat 服务器的之前“关闭

Spring+MyBatis整合后测试出现could not get JDBC connection原因 22222224234: 配置文件jdbc.properties里面每一行设置后面存在空格，导致解析出错！

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot报错 22222224234: Caused by: org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot create JDBC driver of cla...

springboot整合mybatis遇到的错误CannotGetJdbcConnectionException 22222224234: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: The server time zone value 'ÖÐ¹ú...

nested exception is java.sql.SQLException: 内部错误 22222224234: 查看下是不是有数据为空，而数据库不能为空的

记Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could no 22222224234: 搭建ssm项目时遇到的问题解决：url加上：useJDBCCompliantTimezoneShift=true&serverTimezone=UTC jdbc.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&serverTimezone=UTC...

tomcat 启动后访问数据库Could not open JDBC Connection for transaction 22222224234: ubuntu系统下 tomcat 启动后访问数据库报错： org.springframework.transaction.CannotCreateTransactionException: Coul

org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for 22222224234: 问题？org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction 整合大三大框架的时候，单独测试没问题，在请求action的时候，会出现以下问题： org.springframework.transaction.Canno

SpringMVC 无法获取连接报错 22222224234: 在进行单元测试的时候，发现报错 Could not get JDBC Connection; nested exception is java.sql.SQLException: jdbc.properties配置文件信息 driver=com.mysql.jdbc.Driver url=jdbc:mysql://127.0.0.1:3306/seckill?useUnicode=true&

nested exception is java.sql.SQLException: 数字溢出的问题解决 22222224234: 错误现象今天调试一段代码，里面有个逻辑，要批量取数据；当运行取到第二批数据的时候，程序报了如下错误： org.springframework.jdbc.UncategorizedSQLException: StatementCallback; uncategorized SQLException for SQL [select * from (select t.*,rownum rnm

SpringBoot+MyBaits+MySQL连接数据库出错，求大神指点配置 22222224234: 报错如下： 2017-11-19 15:13:40.009 ERROR 15152 --- [nio-8090-exec-2] e.n.y.o.service.LoginModuleService : checkUserInfo: Error message is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) ### The error may exist in file [D:\Spring\JavaWeb\OnlineBookstore\target\classes\mybatis\mapper\UserInfoMapper.xml] ### The error may involve edu.javaee.onlinebookstore.mapper.UserInfoMapper.isNameExist ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) application.properties配置如下： server.port = 8090 spring.mvc.view.prefix = /WEB-INF/jsp/ spring.mvc.view.suffix = .jsp spring.datasource.driverClassName = com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://localhost:3306/onlinebookstore?useUnicode=true&characterEncoding=utf8&useSSL=false spring.datasource.username = root spring.datasource.password = root mybatis.typeAliasesPackage = edu.javaee.onlinebookstore.domain mybatis.config-location = classpath:mybatis/mybatis-config.xml mybatis.mapper-locations = classpath:mybatis/mapper/*Mapper.xml logging.file = log/service.log 检查过数据库密码正确，可以通过Navicat访问。

Could not get JDBC Connection的问题，请高手指点一下！！！ 22222224234: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

使用dbcp连接池的时候 org.springframework.jdbc.CannotGetJdbcConnectionException: 22222224234: 异常如下：五月 07, 2017 5:30:03 下午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.servic

nested exception is java.sql.SQLException: com.mysql.jdbc.Driver 22222224234: 公司项目本来是 oracle 驱动 + druid 数据源配置，以及多数据源配置。修改为 mysql+druid+单数据源。然后报错如下：说一下错误原因，错误原因也属于基础了。项目中，没有 mysql 驱动的jar 。第一次报错，是 druid 数据源配置，然后，找不到错误原因，更改成dbcp 链接，还是报错如下。一下午，就百度+谷歌这个问题了。后来问老总，老总说。...

复制书本上三大框架的项目，运行调试时遇到： Could not open JDBC Connection for transaction; nested exc 22222224234: 具体的错误提示如下： HTTP Status 500 - type Exception report message description The server encountered an int

浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatis 22222224234: 浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: type Ex...

Could not get JDBC Connection; nested exception is org.apache.tomcat.jdbc.pool.PoolExhaustedExceptio 22222224234: &lt;bean id="calMysqlDataSource" class="org.apache.tomcat.jdbc.pool.DataSource"&gt; &lt;property name="driverClassName" value="${jdbc.driver}" /&gt; &lt;property name="url" value="$

java SQLserver JDBC 连接报错Connections could not be acquired from the underlying database! 22222224234: Caused by: org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested excep...

Mariadb Could not get JDBC Connection; nested exception is java.sql.SQLException 22222224234: 自己创建的项目数组选择的是mariadb，但是项目跑起来后，无法获取数据连接，经过多番查找，终于找到原因了！ 1.mariadb Connection strings 连接地址，我找着网上配置之后连接不上。 2.网上提供的是url为：jdbc:maria://localhost:3306/dbName。 3.我在国外网站查找到的是： Connection connection = Driv

解决方法dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver 22222224234: 使用mysql+druid时报错这是报错信息折腾了好久。七月 08, 2019 2:39:14 下午 com.alibaba.druid.pool.DruidDataSource error 严重: dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver at com.alibaba.druid.util.J...

Linux下web项目报错Could not get JDBC Connection 22222224234: 这个问题也花了挺多的时间，这里说一下解决问题的思路发现这个问题，我们可以新建一个程序来测试JDBC是否可以正常连接，把有异常的地方打印出来我们可以发现异常是publie key不被允许这里加上再次运行，运行成功然后把这些配置文件赋值到web项目的配置文件里到此，web项目可以成功连接jdbc 这里还有一个值得注意的地方，就是Linux对大小写是敏感的，...

ssm框架中数据库版本问题 22222224234: 错误问题描述： HTTP Status 500 – Internal Server Error Type Exception Report Message Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception...

Could not get JDBC Connection,请教高手。 22222224234: 请教个问题。在myeclipse启动tomcat，工程登录时，会报错： org.springframework.jdbc.CannotGetJdbcConnectionException: Could

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常

求助：SSM用c3p0连接mysql时Could not get JDBC Connection 22222224234: 【控制台log】严重: Servlet.service() for servlet [spring_mvc] in context with path [/P_AI] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database! ### The error may exist in config/mybatis/mapper/CommAdminMapper.xml ### The error may involve cn.java.demo.mapper.CommAdminMapper.selectAdminByInfo ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!] with root cause com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source. at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1002) at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:293) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:348) at com.mchange.v2.c3p0.PoolBackedDataSource.getConnection(PoolBackedDataSource.java:120) at com.mchange.v2.c3p0.ComboPooledDataSource.getConnection(ComboPooledDataSource.java:601) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:82) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:68) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) at com.sun.proxy.$Proxy13.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy14.selectAdminByInfo(Unknown Source) at cn.java.demo.dao.impl.CommAdminDaoImpl.selectAdminByInfo(CommAdminDaoImpl.java:21) at cn.java.demo.logic.impl.CommAdminLogicImpl.selectAdminByInfo(CommAdminLogicImpl.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy18.selectAdminByInfo(Unknown Source) at cn.java.demo.controller.CommAdminController.admin(CommAdminController.java:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection 22222224234: 最近在复习ssm时，做了一个小demo。在这其中就遇到许多问题，而出现这些问题时，让自己最大的一个感受就是多翻阅官方文档。虽然现在市场有许多书籍和视频，这些资源用归用。但是当你跟着这些教程走下去，最会有一些问题的。自己也有从中查看出来。例如: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache

SSM整合时报错org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectio...

获取jdbc连接失败，加载数据库驱动失败， Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: 22222224234: Causedby:org.springframework.jdbc.CannotGetJdbcConnectionException:FailedtoobtainJDBCConnection;nestedexceptionisjava.sql.SQLException:Failedtovalidateanewlyestablishedconnection. ...

The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'excepti... 22222224234: The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'exception', 'round' or 'convertToNull'. The value 'convertToNull ' is not in this set.这个问题是解决以下问题...

求救.jdbc.CannotGetJdbcConnectionException 22222224234: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 ### The error may exist in class path resource [mybatis/mappers/WoServicesInfoPjMapper.xml] ### The error may involve com.haier.sqm.dao.WoServicesInfoPjDAO.woServicesInfoPjQueryCount ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.GeneratedMethodAccessor531.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:354) ... 51 more Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:66) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.haier.openplatform.cat.interceptor.BuriedPointMybatisInterceptor.intercept(BuriedPointMybatisInterceptor.java:50) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) at com.sun.proxy.$Proxy48.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) ... 57 more Caused by: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1137) at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:960) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4544) at com.alibaba.druid.filter.logging.LogFilter.dataSource_getConnection(LogFilter.java:827) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.filter.FilterAdapter.dataSource_getConnection(FilterAdapter.java:2723) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:938) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:930) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:102) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ... 74 more Caused by: java.sql.SQLException: validateConnection false at com.alibaba.druid.pool.DruidAbstractDataSource.validateConnection(DruidAbstractDataSource.java:1216) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1439) at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1861) 最近系统不时就曝出这种问题最后导致系统宕机 dubbo服务连不上

java.sql.SQLNonTransientConnectionException: 用户 ID 长度 (0) 超出 1 到 255 的范围 22222224234: 使用Derby进行JUnit测试时, 报出了org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLNonTransientConnectionException:

不能连接SQL SERVER 2000 的解决方案 22222224234: 本文转自：http://blog.csdn.net/java2000_net/archive/2008/04/05/2252640.aspx 本文收录了不能连接SQL Server ，报 The Network Adapter could not establish the connection 异常的所有遇到过的原因，并提供了图形化的排查向导。不过根据经验，没有升级到SP4的可能性最高。

关于java.sql.SQLNonTransientConnectionException: Could not create connection to database server. 的解决办法 22222224234: 控制台报的错误：[ERROR] 2018-06-04 15:34:08.281 [RMI TCP Connection(5)-127.0.0.1] c.alibaba.druid.pool.DruidDataSource:870 - init datasource error, url: jdbc:mysql://localhost:3306/credit-demo?autoReconnect=t...

MySQLNonTransientConnectionException: Could not create connection to database server. 22222224234: 新官方支持将com.mysql.jdbc.Driver改为com.mysql.cj.jdbc.Driver，此外mysql8.0是不需要建立ssl连接的，你需要显示关闭，即url中的useSSL=false；最后你需要设置CST，CST可视为美国、澳大利亚、古巴或中国的标准时间。serverTimezone是设置时区的. #jdbc.driver=com.mysql.jdbc.Driver jdb...

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionE...

服务器报错问题。org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Co 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

【已解决】Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException 22222224234: SEVERE: Servlet.service() for servlet [springmvc] in context with path [/rgl_v01] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exce

MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 22222224234: http://zeusami.iteye.com/blog/1112827 MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure com.mysql.jdbc.exceptions.jdbc4.Communi

关于jdbc的一个奇怪的问题 22222224234: ``` public class JdbcUtils { private static Properties config = new Properties(); static { try { config.load(JdbcUtils.class.getClassLoader().getResourceAsStream("db.properties")); Class.forName(config.getProperty("jdbc.driverClass")); } catch (Exception e) { } } public static Connection getConn() throws SQLException { return DriverManager.getConnection(config.getProperty("jdbc.url"), config.getProperty("jdbc.username"), config.getProperty("jdbc.password")); } public static void main(String[] args) throws SQLException { System.out.println(getConn()); } } ``` 报了下面的错误： Exception in thread "main" java.sql.SQLException: Access denied for user 'root '@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:695) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:663) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:653) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:115) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1663) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:662) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:221) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at cn.njit.utils.JdbcUtils.getConn(JdbcUtils.java:20) at cn.njit.utils.JdbcUtils.main(JdbcUtils.java:24) 但是如果在main方法里面直接打印DriverManager.getConnection("jdbc:mysql:///sx?serverTimezone=Asia/Shanghai&useSSL=false", "root", "123456");是没有问题的

【MySQL】JDBC连接MySQL的一些问题以及解决办法 22222224234: 1.Java使用mysql-jdbc连接MySQL出现如下警告：Establishing SSL connection without server's identityverification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+requirements SSL connection must be e

Failed to obtain JDBC Connection 22222224234: 环境： spring cloud + myBatis + MySql5 报错信息如下： Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionExcep...

Spring框架中配置数据库(MySQL8.0)，配置不对，会出现Could not get JDBC Connection 22222224234: Spring框架中配置数据库(MySQL8.0)属性文件(文件名.properties)，配置不对，会出现 Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLNonTransientConne...

EncodingFilter Could not get JDBC Connection; nested exception is java.sql 22222224234: 先用客户端工具连接数据库看是否能连接如果能连接就去看你的EncodingFilter 是不是用户名密码写的对不对是不是直接copy别人的

Could not open JDBC Connection for transaction; nested exc [用户名密码错误异常】 22222224234: HTTP Status 500 - Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is o

Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnec 22222224234: Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 3000, active 16, maxActive 16"这个异常可能是因为druid连接池泄漏产生的异常。连接超时，active...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException 22222224234: mysql数据库老连接不上，而我的Mysql Workbench能正常运行九月12, 2018 8:46:22上午org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [springmvc] in context with path [/DCC] threw excepti...

大学四年自学走来，这些私藏的实用工具/学习网站我贡献出来了 22222224234: 大学四年，看课本是不可能一直看课本的了，对于学习，特别是自学，善于搜索网上的一些资源来辅助，还是非常有必要的，下面我就把这几年私藏的各种资源，网站贡献出来给你们。主要有：电子书搜索、实用工具、在线视频学习网站、非视频学习网站、软件下载、面试/求职必备网站。注意：文中提到的所有资源，文末我都给你整理好了，你们只管拿去，如果觉得不错，转发、分享就是最大的支持了。一、电子书搜索对于大部分程序员...

在中国程序员是青春饭吗？ 22222224234: 今年，我也32了，为了不给大家误导，咨询了猎头、圈内好友，以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助，记得帮我点赞哦。目录：你以为的人生一次又一次的伤害猎头界的真相如何应对互联网行业的「中年危机」一、你以为的人生刚入行时，拿着傲人的工资，想着好好干，以为我们的人生是这样的：等真到了那一天，你会发现，你的人生很可能是这样的： ...

程序员请照顾好自己，周末病魔差点一套带走我。 22222224234: 程序员在一个周末的时间，得了重病，差点当场去世，还好及时挽救回来了。

CCNA经典教材CCNA考试下载333333334234: CCNA的经典教材，全英文。主要用于熟悉网络方面的英文。相关下载链接：[url=//download.csdn.net/download/thinghuawxj/2844955?utm_source=bbsseo]//download.csdn.net/download/thinghuawxj/2844955?utm_source=bbsseo[/url]

用HttpClient类实现查询申通快递的功能下载333333334234: 用HttpClient类实现查询申通快递的功能。示例请见http://www.ickd.cn/shentong.html 相关下载链接：[url=//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo]//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo[/url]

maven的需使用的包下载333333334234: maven的jar包，解压即可使用，解压到某个目录，即可使用相关下载链接：[url=//download.csdn.net/download/zxfryp909012366/9375921?utm_source=bbsseo]//download.csdn.net/download/zxfryp909012366/9375921?utm_source=bbsseo[/url]

我们是很有底线的

Could not get JDBC Connection; nested exception is java.sql.SQLException: ${jdbc.driver} 22222224234: 在一个SSM分布式项目中一个服务报错： ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: ${...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cann 22222224234: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user '16572'@'localhost' 试遍了网上的方法都没有解决我的问题，...

[已解决] mysql8 Could not get JDBC Connection 22222224234: 问题描述、简单贴下报错信息 ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedExce...

Could not get JDBC Connection; nested exception is java.sql.SQLException: interr 22222224234: 程序运行一段时间后，出现下面异常。偶尔出现。数据库sqlserver 2019-03-25 16:00:08,887 ERROR impl.OrderServiceImpl.selectOrderB

解决： java.net.ConnectException: Connection refused: connect 22222224234: java.net.ConnectException: Connection refused: connect 1. 报错如上。 2. 原因和解决： 1）端口号被占用：杀死占用端口号（一般为8080）的进程，释放端口；彻底关闭 Tomcat 服务器，或者重新启动项目。 2）使用以下命令检查服务器中允许的最大进程数：ulimit -u。如果将此值设置为较低值，例如1024，则使用以下...

Could not get JDBC Connection 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver' ### The error may exist in cn/drzk/wanda/cinema/dao/form/dao/TicketsFromDao.java (best guess) ### The error may involve cn.drzk.wanda.cinema.dao.form.dao.TicketsFromDao.count ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver'

数据库连接异常，无法获得Jdbc连接异常 22222224234: 求大神告诉原因以及解决办法,谢谢！

报Could not get JDBC Connection的错误 22222224234: 之前用的都是mysql数据库，这次的项目需要用到Oracle数据库，在搭好环境后进行数据库连接测试时报Could not get JDBC Connection;的错误，详细错误如下： ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nes...

java.sql.SQLException: com.mysql.jdbc.Driver 22222224234: 缺少jdbc对mysql的jar 在 pom.xml 中，加入 mysql 的 maven 引用。 &lt;dependency&gt; &lt;groupId&gt;mysql&lt;/groupId&gt; &lt;artifactId&gt;mysql-connector-java&lt;/artifactId&gt; &lt;version&gt;5.1.38&...

Could not get JDBC Connection; nested exception is java.sql.SQLException: Java d 22222224234: Could not get JDBC Connection; nested exception is java.sql.SQLException: Java does not support the 最近在摸索tapestry5，07年就出现的技术为啥资料如此至少哦， spring+tapestry5 +mysql 在连接数据库的时候，提示：Could not get ...

ssm框架，无法访问数据库Could not get JDBC Connection 22222224234: 用的德鲁伊连接池，先看applicationContext-dao.xml里的配置 ``` ``` 这样的话，控制台输出： 2017-12-28 12:43:58,209DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,214DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[org.springframework.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:43:58,222DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,317DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,335DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,366DEBUG[org.springframework.jdbc.datasource.DataSourceUtils] - 2017-12-28 12:43:58,447INFO[com.alibaba.druid.pool.DruidDataSource] - 一直显示等待，后来加了个maxWait属性，时间是5秒，然后才开始报错，如下： 2017-12-28 12:47:41,261DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,264DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[org.springframework.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:47:41,270DEBUG[org.springframework.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,338DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,348DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,378DEBUG[org.springframework.jdbc.datasource.DataSourceUtils] - 2017-12-28 12:47:41,472INFO[com.alibaba.druid.pool.DruidDataSource] - 2017-12-28 12:47:46,473WARN[com.alibaba.druid.pool.DruidDataSource] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[org.springframework.jdbc.datasource.DataSourceTransactionManager] - 2017-12-28 12:47:51,478DEBUG[org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver] - <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} and ${criterion.condition} and ${criterion.condition} #{criterion.value} and ${criterion.condition} #{criterion.value} and #{criterion.secondValue} and ${criterion.condition} #{listItem} id, title, sell_point, price, num, barcode, image, cid, status, created, updated select distinct from tb_item order by ${orderByClause} select from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item where id = #{id,jdbcType=BIGINT} delete from tb_item insert into tb_item (id, title, sell_point, price, num, barcode, image, cid, status, created, updated) values (#{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}) insert into tb_item id, title, sell_point, price, num, barcode, image, cid, status, created, updated, #{id,jdbcType=BIGINT}, #{title,jdbcType=VARCHAR}, #{sellPoint,jdbcType=VARCHAR}, #{price,jdbcType=BIGINT}, #{num,jdbcType=INTEGER}, #{barcode,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR}, #{cid,jdbcType=BIGINT}, #{status,jdbcType=TINYINT}, #{created,jdbcType=TIMESTAMP}, #{updated,jdbcType=TIMESTAMP}, select count(*) from tb_item update tb_item id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP}, update tb_item set id = #{record.id,jdbcType=BIGINT}, title = #{record.title,jdbcType=VARCHAR}, sell_point = #{record.sellPoint,jdbcType=VARCHAR}, price = #{record.price,jdbcType=BIGINT}, num = #{record.num,jdbcType=INTEGER}, barcode = #{record.barcode,jdbcType=VARCHAR}, image = #{record.image,jdbcType=VARCHAR}, cid = #{record.cid,jdbcType=BIGINT}, status = #{record.status,jdbcType=TINYINT}, created = #{record.created,jdbcType=TIMESTAMP}, updated = #{record.updated,jdbcType=TIMESTAMP} update tb_item title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP}, where id = #{id,jdbcType=BIGINT} update tb_item set title = #{title,jdbcType=VARCHAR}, sell_point = #{sellPoint,jdbcType=VARCHAR}, price = #{price,jdbcType=BIGINT}, num = #{num,jdbcType=INTEGER}, barcode = #{barcode,jdbcType=VARCHAR}, image = #{image,jdbcType=VARCHAR}, cid = #{cid,jdbcType=BIGINT}, status = #{status,jdbcType=TINYINT}, created = #{created,jdbcType=TIMESTAMP}, updated = #{updated,jdbcType=TIMESTAMP} where id = #{id,jdbcType=BIGINT} ``` 上面是逆向工程的mapper，后来我自己写了个TestMapper,还是出现同样的问题: ![图片说明](https://img-ask.csdn.net/upload/201712/28/1514454719_724728.png) 另外navicat访问数据库没问题。我想会不会是连接池配置的问题，也许那些配置可能导致这种情况？？

报错：java.sql.SQLException: com.mysql.cj.jdbc.Driver 22222224234: 在IDEA里用Spring Initializr创建了一个SpringBoot项目，mybatis链接mysql数据库时报以下错误 2019-09-23 15:23:19.211 INFO 4568 --- [nio-8888-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/demo] : Initializing Spring DispatcherSe...

Could not get JDBC Connection; nested exception解决方法 22222224234: 运行程序时一直出现这个，使用的mysql是8.0.17，试了很多方法后才发现是数据库版本的问题。错误如下到最后才发现是pom.xml中的版本号不对应导致的，将版本号改过来就行。如下所示： <dependency> <groupId>mysql</groupId> <artifactId>mysql-...

Mysql版本的相关问题：com.mysql.cj.jdbc.Driver和com.mysql.jdbc.Driver 22222224234: 1. 在使用mysql时控制台日志报错如下：Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loadi...

出现错误Could not get JDBC Connection; nested exception is java.sql.SQLException:com.mysql.cj.jdbc.Drive... 22222224234: 问题描述：　　使用JDBC连接MySQL数据库时出现问题。问题截图：　　解决：　　原来使用的JDBC驱动包是mysql-connector-java-5.1.18版本的。　　改为mysql-connector-java-8.0.16版本。　　问题解决转载于:https://www.cnblogs.com/letherwave/p/1153...

Could not get JDBC Connection; nested exception is java.sql.SQLException 22222224234: 今天用换了台机器做我的毕业设计（数据库用的是oracle），配置好后启动服务器运行程序，出现了如下错误： [color=red]Could not get JDBC Connection; nested exception is java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection...

解决Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException 22222224234: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user ‘15916’@‘localhost’ (using password: YES)...

关于使用ideal 出现Could not get JDBC Connection问题 22222224234: 关于使用ideal 出现Could not get JDBC Connection问题 org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot load JDBC driver...

idea连接mysql数据库报java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeExcepti 22222224234: 出错场景：使用idea连接mysql（5.2版本）报错： java.lang.RuntimeException: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'ÖÐ¹ú±ê×¼Ê±¼ä' is unrecognized or represents more th...

Could not get JDBC Connection 22222224234: 刚照着网上搭的ssm框架，写了个简单的查询user表，报错如下：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframewor...

RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理 22222224234: RDS for MySQL 错误 the table '/home/mysql/xxxx/xxxx/#tab_name' is full 的原因和处理 1. 出现这个错误信息的原因 2. 如何处理该错误信息 3. 如何判断查询是否使用内部临时表在使用 RDS 的过程中，有时会碰到下面的出错信息： the table ‘/home/mysq...

在系统访问高峰期出现无法获取数据库连接的异常 22222224234: 最近遇到一个棘手的问题,请教各位能否查明报出异常的原因： 1：正常情况下系统运行没有问题，但是系统访问高峰情况下会出现，日志如下，这段日志出现一段时间之后，应用就会假死，持续1分钟左右之后恢复。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException : javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS The error may exist in com/huifu/muser/common/dal/dao/MerUsrMapMapper.xml The error may involve com.huifu.muser.common.dal.dao.MerUsrMapMapper.queryMerUsrMap The error occurred while executing a query Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: javax.resource.ResourceE xception: IJ000453: Unable to get managed connection for java:jboss/datasources/PnrDS at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:365) at com.sun.proxy.$Proxy157.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:195) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:124) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:90) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at com.sun.proxy.$Proxy158.queryMerUsrMap(Unknown Source) at com.huifu.muser.service.core.cash.impl.CashReqServiceImpl.checkMerUsrMap(CashReqServiceImpl.java:267) at com.huifu.muser.biz.cash.impl.CashReqManager2Impl.cashConfirmReq(CashReqManager2Impl.java:211) at com.huifu.muser.webapp.controller.cash.CashController.cashConfirm2(CashController.java:200) at sun.reflect.GeneratedMethodAccessor2127.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 2：我的应用框架是 spring3.0.5+mybatis3.1.1+JBoss7.1+oracle11+jdk1.6 3：负载均衡 netscaler,两台虚拟机，四核，内存8G,jvm启动参数配置如下： -XX:+UseCompressedOops -XX:+TieredCompilation -Xms4096m -Xmx4096m -Xmn1024m -XX:PermSize=256M -XX:MaxPermSize=512M -Djava.net.preferIPv4Stack=true -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -XX:SurvivorRatio=8 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 -Xnoclassgc -XX:+CMSClassUnloadingEnabled 4：我的数据库链接池是配置在jboss的配置文件standalone-ha.xml中，连接池配置为18-300，高峰期能达到300，即应用确实与数据库建立300链接，但是活跃链接在15左右，配置如下 ![图片说明](https://img-ask.csdn.net/upload/201601/20/1453293770_127311.png)

JAVAweb项目出现Could not get JDBC Connection，与Navicat连接MySQL1130，2003问题 22222224234: 在登陆自己基于SSM项目出现Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableCon...

JDBC连接碰到的一些问题解决方法 22222224234: 今天在idea上学习JDBC驱动链接MySQL进行查询.MySQL 5.7.22, JDK9.写完语句之后,报了一连串的错误,首先是Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. 我使用的是mysql-connector-ja...

错误 java.sql.SQLNonTransientConnectionException: CLIENT_PLUGIN_AUTH is required 22222224234: 一. 由于使用的是springboot默认的 mysql-connector-java 版本是八点多, 导致报了这个错误 Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically...

org.dom4j.DocumentException: Connection timed out: connect Nested exception: Connection timed out: c 22222224234: 框架：struts2 2.2.3 + hibernate 3.0 所报异常： exception java.lang.reflect.InvocationTargetException sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.

Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'ro 22222224234: 报了Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)错误的意思是找不到数据连接。也就是连接不到数据库原因是你的用户名或密码错误。这里有其中的一种解决方案。注

Could not get JDBC Connection; com.mysql.cj.jdbc.Driver？ 22222224234: 四月 17, 2019 2:15:44 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [taotao-manager] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver ### The error may exist in com/taotao/mapper/TbItemMapper.xml ### The error may involve com.taotao.mapper.TbItemMapper.selectByPrimaryKey ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.jdbc.Driver] with root cause java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at com.alibaba.druid.util.JdbcUtils.createDriver(JdbcUtils.java:518) at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:583) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:915) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:911) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:98) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) at com.sun.proxy.$Proxy30.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:163) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at com.sun.proxy.$Proxy31.selectByPrimaryKey(Unknown Source) at com.taotao.service.impl.ItemServiceImpl.getItemById(ItemServiceImpl.java:24) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:267) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy34.getItemById(Unknown Source) at com.taotao.controller.ItemController.getItemById(ItemController.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) db.properties配置为 jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/taotao?useSSL=false&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF8 jdbc.username=root jdbc.password=123 连接池配置

原来很正常的hibernate连接mysql，突然报：java.net.ConnectException: Connection refused: connect 22222224234: 大概两周前用myeclipse做的hibernate连接mysql的小测试，只是完成很简单的功能，很正常，今天拿来再试时，突然报下面的错误： Could not connect to: : 4070

nested exception is java.sql.SQLException: 无效的列索引 22222224234: Exception occurred during processing request: PreparedStatementCallback; invalid ResultSet access fo

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connectio 22222224234: 严重: StandardWrapper.Throwableorg.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections co...

Could not get JDBC Connection; myeclipse中java项目导入的问题 22222224234: 严重: Exception starting filter CommonFilter org.mybatis.spring.MyBatisSystemException: nested excepti

成功解决java.net.ConnectException: Connection refused: connect 22222224234: 解决问题 java.net.ConnectException: Connection refused: connect 解决方法可知端口被占用， T1、释放端口，重新启动端口即可！ T2、换一个别的端口亦可！如果以上办法没解决，请参考网友的解释参考网友解释因为SecureRandom的创建操作花费了大量时间，几百秒，所以tomcat启动很...

Could not get JDBC Connection的问题，请高手指点一下，谢谢！！！ 22222224234: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

maven项目用tomcat启动一直无法连接数据库！！Could not get JDBC Connection 22222224234: 十二月 04, 2017 12:54:55 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service()

Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could not 22222224234: 学习慕课上的一个项目，使用的是Spring+Mybatis+c3po 学习搭建框架。 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.sprin...

诡异的报错：java.sql.SQLException: Connections could not be acquired from the underlyi 22222224234: 以下是我截取启动tomcat时候报错的关键几处：信息: Initializing Spring root WebApplicationContext2011-04-04 12:38:59,780 E

出现 java.net.ConnectException: Connection refused 异常的原因及解决方法 22222224234: 1 异常描述在启动 Tomcat 服务器的时候，控制台一直输出异常信息，然后停止服务器，报出如下异常：2 异常原因通过观察上图中被标记出来的异常信息，咱们可以知道 java.net.ConnectException: Connection refused 此异常，为：连接被拒绝异常。之前也在网上搜索过该异常的原因，大多数人给出的答案是端口号被占用，或者在启动本次 Tomcat 服务器的之前“关闭

Spring+MyBatis整合后测试出现could not get JDBC connection原因 22222224234: 配置文件jdbc.properties里面每一行设置后面存在空格，导致解析出错！

Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot报错 22222224234: Caused by: org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot create JDBC driver of cla...

springboot整合mybatis遇到的错误CannotGetJdbcConnectionException 22222224234: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: The server time zone value 'ÖÐ¹ú...

nested exception is java.sql.SQLException: 内部错误 22222224234: 查看下是不是有数据为空，而数据库不能为空的

记Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could no 22222224234: 搭建ssm项目时遇到的问题解决：url加上：useJDBCCompliantTimezoneShift=true&serverTimezone=UTC jdbc.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&serverTimezone=UTC...

tomcat 启动后访问数据库Could not open JDBC Connection for transaction 22222224234: ubuntu系统下 tomcat 启动后访问数据库报错： org.springframework.transaction.CannotCreateTransactionException: Coul

org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for 22222224234: 问题？org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction 整合大三大框架的时候，单独测试没问题，在请求action的时候，会出现以下问题： org.springframework.transaction.Canno

SpringMVC 无法获取连接报错 22222224234: 在进行单元测试的时候，发现报错 Could not get JDBC Connection; nested exception is java.sql.SQLException: jdbc.properties配置文件信息 driver=com.mysql.jdbc.Driver url=jdbc:mysql://127.0.0.1:3306/seckill?useUnicode=true&

nested exception is java.sql.SQLException: 数字溢出的问题解决 22222224234: 错误现象今天调试一段代码，里面有个逻辑，要批量取数据；当运行取到第二批数据的时候，程序报了如下错误： org.springframework.jdbc.UncategorizedSQLException: StatementCallback; uncategorized SQLException for SQL [select * from (select t.*,rownum rnm

SpringBoot+MyBaits+MySQL连接数据库出错，求大神指点配置 22222224234: 报错如下： 2017-11-19 15:13:40.009 ERROR 15152 --- [nio-8090-exec-2] e.n.y.o.service.LoginModuleService : checkUserInfo: Error message is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) ### The error may exist in file [D:\Spring\JavaWeb\OnlineBookstore\target\classes\mybatis\mapper\UserInfoMapper.xml] ### The error may involve edu.javaee.onlinebookstore.mapper.UserInfoMapper.isNameExist ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) application.properties配置如下： server.port = 8090 spring.mvc.view.prefix = /WEB-INF/jsp/ spring.mvc.view.suffix = .jsp spring.datasource.driverClassName = com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://localhost:3306/onlinebookstore?useUnicode=true&characterEncoding=utf8&useSSL=false spring.datasource.username = root spring.datasource.password = root mybatis.typeAliasesPackage = edu.javaee.onlinebookstore.domain mybatis.config-location = classpath:mybatis/mybatis-config.xml mybatis.mapper-locations = classpath:mybatis/mapper/*Mapper.xml logging.file = log/service.log 检查过数据库密码正确，可以通过Navicat访问。

Could not get JDBC Connection的问题，请高手指点一下！！！ 22222224234: 使用软件时，回车执行，提示：“Could not get JDBC Connection;nested exception is org.apache.commons.dbcp.SQLNestedEx

使用dbcp连接池的时候 org.springframework.jdbc.CannotGetJdbcConnectionException: 22222224234: 异常如下：五月 07, 2017 5:30:03 下午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.servic

nested exception is java.sql.SQLException: com.mysql.jdbc.Driver 22222224234: 公司项目本来是 oracle 驱动 + druid 数据源配置，以及多数据源配置。修改为 mysql+druid+单数据源。然后报错如下：说一下错误原因，错误原因也属于基础了。项目中，没有 mysql 驱动的jar 。第一次报错，是 druid 数据源配置，然后，找不到错误原因，更改成dbcp 链接，还是报错如下。一下午，就百度+谷歌这个问题了。后来问老总，老总说。...

复制书本上三大框架的项目，运行调试时遇到： Could not open JDBC Connection for transaction; nested exc 22222224234: 具体的错误提示如下： HTTP Status 500 - type Exception report message description The server encountered an int

浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatis 22222224234: 浏览器报错如下： HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: type Ex...

Could not get JDBC Connection; nested exception is org.apache.tomcat.jdbc.pool.PoolExhaustedExceptio 22222224234: &lt;bean id="calMysqlDataSource" class="org.apache.tomcat.jdbc.pool.DataSource"&gt; &lt;property name="driverClassName" value="${jdbc.driver}" /&gt; &lt;property name="url" value="$

java SQLserver JDBC 连接报错Connections could not be acquired from the underlying database! 22222224234: Caused by: org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested excep...

Mariadb Could not get JDBC Connection; nested exception is java.sql.SQLException 22222224234: 自己创建的项目数组选择的是mariadb，但是项目跑起来后，无法获取数据连接，经过多番查找，终于找到原因了！ 1.mariadb Connection strings 连接地址，我找着网上配置之后连接不上。 2.网上提供的是url为：jdbc:maria://localhost:3306/dbName。 3.我在国外网站查找到的是： Connection connection = Driv

解决方法dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver 22222224234: 使用mysql+druid时报错这是报错信息折腾了好久。七月 08, 2019 2:39:14 下午 com.alibaba.druid.pool.DruidDataSource error 严重: dataSource init error java.sql.SQLException: com.mysql.cj.jdbc.Driver at com.alibaba.druid.util.J...

Linux下web项目报错Could not get JDBC Connection 22222224234: 这个问题也花了挺多的时间，这里说一下解决问题的思路发现这个问题，我们可以新建一个程序来测试JDBC是否可以正常连接，把有异常的地方打印出来我们可以发现异常是publie key不被允许这里加上再次运行，运行成功然后把这些配置文件赋值到web项目的配置文件里到此，web项目可以成功连接jdbc 这里还有一个值得注意的地方，就是Linux对大小写是敏感的，...

ssm框架中数据库版本问题 22222224234: 错误问题描述： HTTP Status 500 – Internal Server Error Type Exception Report Message Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception...

Could not get JDBC Connection,请教高手。 22222224234: 请教个问题。在myeclipse启动tomcat，工程登录时，会报错： org.springframework.jdbc.CannotGetJdbcConnectionException: Could

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常

求助：SSM用c3p0连接mysql时Could not get JDBC Connection 22222224234: 【控制台log】严重: Servlet.service() for servlet [spring_mvc] in context with path [/P_AI] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database! ### The error may exist in config/mybatis/mapper/CommAdminMapper.xml ### The error may involve cn.java.demo.mapper.CommAdminMapper.selectAdminByInfo ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!] with root cause com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source. at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1002) at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:293) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:348) at com.mchange.v2.c3p0.PoolBackedDataSource.getConnection(PoolBackedDataSource.java:120) at com.mchange.v2.c3p0.ComboPooledDataSource.getConnection(ComboPooledDataSource.java:601) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:82) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:68) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) at com.sun.proxy.$Proxy13.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy14.selectAdminByInfo(Unknown Source) at cn.java.demo.dao.impl.CommAdminDaoImpl.selectAdminByInfo(CommAdminDaoImpl.java:21) at cn.java.demo.logic.impl.CommAdminLogicImpl.selectAdminByInfo(CommAdminLogicImpl.java:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy18.selectAdminByInfo(Unknown Source) at cn.java.demo.controller.CommAdminController.admin(CommAdminController.java:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection 22222224234: 最近在复习ssm时，做了一个小demo。在这其中就遇到许多问题，而出现这些问题时，让自己最大的一个感受就是多翻阅官方文档。虽然现在市场有许多书籍和视频，这些资源用归用。但是当你跟着这些教程走下去，最会有一些问题的。自己也有从中查看出来。例如: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache

SSM整合时报错org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectio...

获取jdbc连接失败，加载数据库驱动失败， Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: 22222224234: Causedby:org.springframework.jdbc.CannotGetJdbcConnectionException:FailedtoobtainJDBCConnection;nestedexceptionisjava.sql.SQLException:Failedtovalidateanewlyestablishedconnection. ...

The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'excepti... 22222224234: The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'exception', 'round' or 'convertToNull'. The value 'convertToNull ' is not in this set.这个问题是解决以下问题...

求救.jdbc.CannotGetJdbcConnectionException 22222224234: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 ### The error may exist in class path resource [mybatis/mappers/WoServicesInfoPjMapper.xml] ### The error may involve com.haier.sqm.dao.WoServicesInfoPjDAO.woServicesInfoPjQueryCount ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66) at sun.reflect.GeneratedMethodAccessor531.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:354) ... 51 more Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:66) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.haier.openplatform.cat.interceptor.BuriedPointMybatisInterceptor.intercept(BuriedPointMybatisInterceptor.java:50) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) at com.sun.proxy.$Proxy48.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) ... 57 more Caused by: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1137) at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:960) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4544) at com.alibaba.druid.filter.logging.LogFilter.dataSource_getConnection(LogFilter.java:827) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.filter.FilterAdapter.dataSource_getConnection(FilterAdapter.java:2723) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:938) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:930) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:102) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ... 74 more Caused by: java.sql.SQLException: validateConnection false at com.alibaba.druid.pool.DruidAbstractDataSource.validateConnection(DruidAbstractDataSource.java:1216) at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1439) at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1861) 最近系统不时就曝出这种问题最后导致系统宕机 dubbo服务连不上

java.sql.SQLNonTransientConnectionException: 用户 ID 长度 (0) 超出 1 到 255 的范围 22222224234: 使用Derby进行JUnit测试时, 报出了org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLNonTransientConnectionException:

不能连接SQL SERVER 2000 的解决方案 22222224234: 本文转自：http://blog.csdn.net/java2000_net/archive/2008/04/05/2252640.aspx 本文收录了不能连接SQL Server ，报 The Network Adapter could not establish the connection 异常的所有遇到过的原因，并提供了图形化的排查向导。不过根据经验，没有升级到SP4的可能性最高。

关于java.sql.SQLNonTransientConnectionException: Could not create connection to database server. 的解决办法 22222224234: 控制台报的错误：[ERROR] 2018-06-04 15:34:08.281 [RMI TCP Connection(5)-127.0.0.1] c.alibaba.druid.pool.DruidDataSource:870 - init datasource error, url: jdbc:mysql://localhost:3306/credit-demo?autoReconnect=t...

MySQLNonTransientConnectionException: Could not create connection to database server. 22222224234: 新官方支持将com.mysql.jdbc.Driver改为com.mysql.cj.jdbc.Driver，此外mysql8.0是不需要建立ssl连接的，你需要显示关闭，即url中的useSSL=false；最后你需要设置CST，CST可视为美国、澳大利亚、古巴或中国的标准时间。serverTimezone是设置时区的. #jdbc.driver=com.mysql.jdbc.Driver jdb...

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc 22222224234: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionE...

服务器报错问题。org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Co 22222224234: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exc

【已解决】Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException 22222224234: SEVERE: Servlet.service() for servlet [springmvc] in context with path [/rgl_v01] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exce

MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 22222224234: http://zeusami.iteye.com/blog/1112827 MySQL第二天早上第一次连接超时报错，解决方法com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure com.mysql.jdbc.exceptions.jdbc4.Communi

关于jdbc的一个奇怪的问题 22222224234: ``` public class JdbcUtils { private static Properties config = new Properties(); static { try { config.load(JdbcUtils.class.getClassLoader().getResourceAsStream("db.properties")); Class.forName(config.getProperty("jdbc.driverClass")); } catch (Exception e) { } } public static Connection getConn() throws SQLException { return DriverManager.getConnection(config.getProperty("jdbc.url"), config.getProperty("jdbc.username"), config.getProperty("jdbc.password")); } public static void main(String[] args) throws SQLException { System.out.println(getConn()); } } ``` 报了下面的错误： Exception in thread "main" java.sql.SQLException: Access denied for user 'root '@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:695) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:663) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:653) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:115) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1663) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:662) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:221) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at cn.njit.utils.JdbcUtils.getConn(JdbcUtils.java:20) at cn.njit.utils.JdbcUtils.main(JdbcUtils.java:24) 但是如果在main方法里面直接打印DriverManager.getConnection("jdbc:mysql:///sx?serverTimezone=Asia/Shanghai&useSSL=false", "root", "123456");是没有问题的

【MySQL】JDBC连接MySQL的一些问题以及解决办法 22222224234: 1.Java使用mysql-jdbc连接MySQL出现如下警告：Establishing SSL connection without server's identityverification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+requirements SSL connection must be e

Failed to obtain JDBC Connection 22222224234: 环境： spring cloud + myBatis + MySql5 报错信息如下： Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionExcep...

Spring框架中配置数据库(MySQL8.0)，配置不对，会出现Could not get JDBC Connection 22222224234: Spring框架中配置数据库(MySQL8.0)属性文件(文件名.properties)，配置不对，会出现 Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLNonTransientConne...

EncodingFilter Could not get JDBC Connection; nested exception is java.sql 22222224234: 先用客户端工具连接数据库看是否能连接如果能连接就去看你的EncodingFilter 是不是用户名密码写的对不对是不是直接copy别人的

Could not open JDBC Connection for transaction; nested exc [用户名密码错误异常】 22222224234: HTTP Status 500 - Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is o

Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnec 22222224234: Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 3000, active 16, maxActive 16"这个异常可能是因为druid连接池泄漏产生的异常。连接超时，active...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException 22222224234: mysql数据库老连接不上，而我的Mysql Workbench能正常运行九月12, 2018 8:46:22上午org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [springmvc] in context with path [/DCC] threw excepti...

大学四年自学走来，这些私藏的实用工具/学习网站我贡献出来了 22222224234: 大学四年，看课本是不可能一直看课本的了，对于学习，特别是自学，善于搜索网上的一些资源来辅助，还是非常有必要的，下面我就把这几年私藏的各种资源，网站贡献出来给你们。主要有：电子书搜索、实用工具、在线视频学习网站、非视频学习网站、软件下载、面试/求职必备网站。注意：文中提到的所有资源，文末我都给你整理好了，你们只管拿去，如果觉得不错，转发、分享就是最大的支持了。一、电子书搜索对于大部分程序员...

在中国程序员是青春饭吗？ 22222224234: 今年，我也32了，为了不给大家误导，咨询了猎头、圈内好友，以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助，记得帮我点赞哦。目录：你以为的人生一次又一次的伤害猎头界的真相如何应对互联网行业的「中年危机」一、你以为的人生刚入行时，拿着傲人的工资，想着好好干，以为我们的人生是这样的：等真到了那一天，你会发现，你的人生很可能是这样的： ...

程序员请照顾好自己，周末病魔差点一套带走我。 22222224234: 程序员在一个周末的时间，得了重病，差点当场去世，还好及时挽救回来了。

CCNA经典教材CCNA考试下载333333334234: CCNA的经典教材，全英文。主要用于熟悉网络方面的英文。相关下载链接：[url=//download.csdn.net/download/thinghuawxj/2844955?utm_source=bbsseo]//download.csdn.net/download/thinghuawxj/2844955?utm_source=bbsseo[/url]

用HttpClient类实现查询申通快递的功能下载333333334234: 用HttpClient类实现查询申通快递的功能。示例请见http://www.ickd.cn/shentong.html 相关下载链接：[url=//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo]//download.csdn.net/download/joeleemaster/3321107?utm_source=bbsseo[/url]

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我们是很有底线的