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]

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Could not get JDBC Connection; nested exception is java.sql.SQLException: ${jdbc.driver}

在一个SSM分布式项目中一个服务报错: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>java</em>.<em>sql</em>.<em>SQLException</em>: ${...

Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cann

<em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is org.apache.<em>com</em>mons.dbcp.SQLNestedException: Cannot create Poolable<em>Connection</em>Factory (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

问题描述、简单贴下报错信息 ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is org.apache.<em>com</em>mons.dbcp.SQLNestedExce...

Could not get JDBC Connection; nested exception is java.sql.SQLException: interr

程序运行一段时间后,出现下面异常。 偶尔出现。数据库<em>sql</em>server 2019-03-25 16:00:08,887 ERROR impl.OrderServiceImpl.selectOrderB

解决: java.net.ConnectException: Connection refused: connect

<em>java</em>.net.ConnectException: <em>Connection</em> 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

org.mybatis.spring.MyBatisSystemException: <em>nested</em> <em>exception</em> is org.apache.ibatis.<em>exception</em>s.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is org.apache.<em>com</em>mons.dbcp.SQLNestedException: Cannot load <em>JDBC</em> driver class '<em>com</em>.microsoft.<em>sql</em>server.jdbc.SQLServerDriver' ### The error may exist in cn/drzk/wanda/cinema/dao/form/dao/TicketsFromDao.<em>java</em> (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.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is org.apache.<em>com</em>mons.dbcp.SQLNestedException: Cannot load <em>JDBC</em> driver class '<em>com</em>.microsoft.<em>sql</em>server.jdbc.SQLServerDriver'

数据库连接异常,无法获得Jdbc连接异常

求大神告诉原因以及解决办法,谢谢!

Could not get JDBC Connection的错误

之前用的都是my<em>sql</em>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<em>Could</em> not get <em>JDBC</em> <em>Connection</em>;的错误,详细错误如下: ### Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; nes...

java.sql.SQLException: com.mysql.jdbc.Driver

缺少jdbc对my<em>sql</em>的jar 在 pom.xml 中,加入 my<em>sql</em> 的 maven 引用。 &amp;lt;dependency&amp;gt; &amp;lt;groupId&amp;gt;my<em>sql</em>&amp;lt;/groupId&amp;gt; &amp;lt;artifactId&amp;gt;my<em>sql</em>-connector-<em>java</em>&amp;lt;/artifactId&amp;gt; &amp;lt;version&amp;gt;5.1.38&amp;...

Could not get JDBC Connection; nested exception is java.sql.SQLException: Java d

<em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>java</em>.<em>sql</em>.<em>SQLException</em>: 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 +my<em>sql</em>   在 连接数据库的时候,提示:<em>Could</em> not get ...

ssm框架,无法访问数据库Could not get JDBC Connection

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[<em>com</em>.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[<em>com</em>.alibaba.druid.pool.DruidDataSource] - 2017-12-28 12:47:46,473WARN[<em>com</em>.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

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Could not get JDBC Connection; nested exception解决方法

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问题描述:   使用<em>JDBC</em>连接MySQL数据库时出现问题。 问题截图:    解决:   原来使用的<em>JDBC</em>驱动包是my<em>sql</em>-connector-<em>java</em>-5.1.18版本的。   改为my<em>sql</em>-connector-<em>java</em>-8.0.16版本。   问题解决 转载于:https://www.cnblogs.<em>com</em>/letherwave/p/1153...

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

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nested exception is java.sql.SQLException: 无效的列索引

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Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connectio

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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:“<em>Could</em> not get <em>JDBC</em> <em>Connection</em>;<em>nested</em> <em>exception</em> is org.apache.<em>com</em>mons.dbcp.SQLNestedEx

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求助:SSM用c3p0连接mysqlCould not get JDBC Connection

【控制台log】 严重: Servlet.service() for servlet [spring_mvc] in context with path [/P_AI] threw <em>exception</em> [Request processing failed; <em>nested</em> <em>exception</em> is org.mybatis.spring.MyBatisSystemException: <em>nested</em> <em>exception</em> is org.apache.ibatis.<em>exception</em>s.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>java</em>.<em>sql</em>.<em>SQLException</em>: <em>Connection</em>s could not be acquired from the underlying database! ### The error may exist in config/mybatis/mapper/CommAdminMapper.xml ### The error may involve cn.<em>java</em>.demo.mapper.CommAdminMapper.selectAdminByInfo ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>java</em>.<em>sql</em>.<em>SQLException</em>: <em>Connection</em>s could not be acquired from the underlying database!] with root cause <em>com</em>.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source. at <em>com</em>.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.<em>java</em>:1002) at <em>com</em>.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.<em>java</em>:293) at <em>com</em>.mchange.v2.c3p0.impl.C3P0Pooled<em>Connection</em>Pool.checkoutPooled<em>Connection</em>(C3P0Pooled<em>Connection</em>Pool.<em>java</em>:348) at <em>com</em>.mchange.v2.c3p0.PoolBackedDataSource.get<em>Connection</em>(PoolBackedDataSource.<em>java</em>:120) at <em>com</em>.mchange.v2.c3p0.ComboPooledDataSource.get<em>Connection</em>(ComboPooledDataSource.<em>java</em>:601) at org.springframework.jdbc.datasource.DataSourceUtils.doGet<em>Connection</em>(DataSourceUtils.<em>java</em>:111) at org.springframework.jdbc.datasource.DataSourceUtils.get<em>Connection</em>(DataSourceUtils.<em>java</em>:77) at org.mybatis.spring.transaction.SpringManagedTransaction.open<em>Connection</em>(SpringManagedTransaction.<em>java</em>:82) at org.mybatis.spring.transaction.SpringManagedTransaction.get<em>Connection</em>(SpringManagedTransaction.<em>java</em>:68) at org.apache.ibatis.executor.BaseExecutor.get<em>Connection</em>(BaseExecutor.<em>java</em>:336) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.<em>java</em>:84) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.<em>java</em>:62) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.<em>java</em>:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.<em>java</em>:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.<em>java</em>:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.<em>java</em>:83) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.<em>java</em>:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.<em>java</em>:141) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.<em>java</em>:77) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.<em>java</em>:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<em>java</em>:43) at <em>java</em>.lang.reflect.Method.invoke(Method.<em>java</em>:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.<em>java</em>:433) at <em>com</em>.sun.proxy.$Proxy13.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.<em>java</em>:166) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.<em>java</em>:82) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.<em>java</em>:59) at <em>com</em>.sun.proxy.$Proxy14.selectAdminByInfo(Unknown Source) at cn.<em>java</em>.demo.dao.impl.CommAdminDaoImpl.selectAdminByInfo(CommAdminDaoImpl.<em>java</em>:21) at cn.<em>java</em>.demo.logic.impl.CommAdminLogicImpl.selectAdminByInfo(CommAdminLogicImpl.<em>java</em>:27) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.<em>java</em>:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<em>java</em>:43) at <em>java</em>.lang.reflect.Method.invoke(Method.<em>java</em>:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.<em>java</em>:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.<em>java</em>:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.<em>java</em>:98) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.<em>java</em>:262) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.<em>java</em>:95) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.<em>java</em>:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.<em>java</em>:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.<em>java</em>:207) at <em>com</em>.sun.proxy.$Proxy18.selectAdminByInfo(Unknown Source) at cn.<em>java</em>.demo.controller.CommAdminController.admin(CommAdminController.<em>java</em>:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.<em>java</em>:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<em>java</em>:43) at <em>java</em>.lang.reflect.Method.invoke(Method.<em>java</em>:498) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.<em>java</em>:175) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.<em>java</em>:446) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.<em>java</em>:434) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.<em>java</em>:938) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.<em>java</em>:870) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.<em>java</em>:961) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.<em>java</em>:852) at <em>java</em>x.servlet.http.HttpServlet.service(HttpServlet.<em>java</em>:635) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.<em>java</em>:837) at <em>java</em>x.servlet.http.HttpServlet.service(HttpServlet.<em>java</em>:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.<em>java</em>:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.<em>java</em>:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.<em>java</em>:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.<em>java</em>:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.<em>java</em>:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.<em>java</em>:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.<em>java</em>:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.<em>java</em>:504) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.<em>java</em>:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.<em>java</em>:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.<em>java</em>:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.<em>java</em>:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.<em>java</em>:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.<em>java</em>:803) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.<em>java</em>:66) at org.apache.coyote.AbstractProtocol$<em>Connection</em>Handler.process(AbstractProtocol.<em>java</em>:790) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.<em>java</em>:1459) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.<em>java</em>:49) at <em>java</em>.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.<em>java</em>:1149) at <em>java</em>.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.<em>java</em>:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.<em>java</em>:61) at <em>java</em>.lang.Thread.run(Thread.<em>java</em>: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: <em>nested</em> <em>exception</em> is org.apache

SSM整合时报错org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection

org.mybatis.spring.MyBatisSystemException: <em>nested</em> <em>exception</em> is org.apache.ibatis.<em>exception</em>s.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.CannotGetJdbc<em>Connection</em>Exception:Failedtoobtain<em>JDBC</em><em>Connection</em>;<em>nested</em><em>exception</em>is<em>java</em>.<em>sql</em>.<em>SQLException</em>:Failedtovalidateanewlyestablishedconnection. ...

The connection property 'zeroDateTimeBehavior' only accepts values of the form: 'excepti...

The connection property 'zeroDateTimeBehavior' only accepts values of the form: '<em>exception</em>', '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.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>com</em>.alibaba.druid.pool.Get<em>Connection</em>TimeoutException: wait millis 60074, active 29, maxActive 300 ### The error may exist in class path resource [mybatis/mappers/WoServicesInfoPjMapper.xml] ### The error may involve <em>com</em>.haier.sqm.dao.WoServicesInfoPjDAO.woServicesInfoPjQueryCount ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>com</em>.alibaba.druid.pool.Get<em>Connection</em>TimeoutException: wait millis 60074, active 29, maxActive 300 at org.apache.ibatis.<em>exception</em>s.ExceptionFactory.wrapException(ExceptionFactory.<em>java</em>:26) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.<em>java</em>:111) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.<em>java</em>:102) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.<em>java</em>:66) at sun.reflect.GeneratedMethodAccessor531.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<em>java</em>:43) at <em>java</em>.lang.reflect.Method.invoke(Method.<em>java</em>:606) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.<em>java</em>:354) ... 51 more Caused by: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>com</em>.alibaba.druid.pool.Get<em>Connection</em>TimeoutException: wait millis 60074, active 29, maxActive 300 at org.springframework.jdbc.datasource.DataSourceUtils.get<em>Connection</em>(DataSourceUtils.<em>java</em>:80) at org.mybatis.spring.transaction.SpringManagedTransaction.open<em>Connection</em>(SpringManagedTransaction.<em>java</em>:80) at org.mybatis.spring.transaction.SpringManagedTransaction.get<em>Connection</em>(SpringManagedTransaction.<em>java</em>:66) at org.apache.ibatis.executor.BaseExecutor.get<em>Connection</em>(BaseExecutor.<em>java</em>:279) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.<em>java</em>:72) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.<em>java</em>:59) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.<em>java</em>:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.<em>java</em>:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.<em>java</em>:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.<em>java</em>:77) at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<em>java</em>:43) at <em>java</em>.lang.reflect.Method.invoke(Method.<em>java</em>:606) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.<em>java</em>:49) at <em>com</em>.haier.openplatform.cat.interceptor.BuriedPointMybatisInterceptor.intercept(BuriedPointMybatisInterceptor.<em>java</em>:50) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.<em>java</em>:60) at <em>com</em>.sun.proxy.$Proxy48.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.<em>java</em>:108) ... 57 more Caused by: <em>com</em>.alibaba.druid.pool.Get<em>Connection</em>TimeoutException: wait millis 60074, active 29, maxActive 300 at <em>com</em>.alibaba.druid.pool.DruidDataSource.get<em>Connection</em>Internal(DruidDataSource.<em>java</em>:1137) at <em>com</em>.alibaba.druid.pool.DruidDataSource.get<em>Connection</em>Direct(DruidDataSource.<em>java</em>:960) at <em>com</em>.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.<em>java</em>:4544) at <em>com</em>.alibaba.druid.filter.logging.LogFilter.dataSource_get<em>Connection</em>(LogFilter.<em>java</em>:827) at <em>com</em>.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.<em>java</em>:4540) at <em>com</em>.alibaba.druid.filter.FilterAdapter.dataSource_get<em>Connection</em>(FilterAdapter.<em>java</em>:2723) at <em>com</em>.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.<em>java</em>:4540) at <em>com</em>.alibaba.druid.pool.DruidDataSource.get<em>Connection</em>(DruidDataSource.<em>java</em>:938) at <em>com</em>.alibaba.druid.pool.DruidDataSource.get<em>Connection</em>(DruidDataSource.<em>java</em>:930) at <em>com</em>.alibaba.druid.pool.DruidDataSource.get<em>Connection</em>(DruidDataSource.<em>java</em>:102) at org.springframework.jdbc.datasource.DataSourceUtils.doGet<em>Connection</em>(DataSourceUtils.<em>java</em>:111) at org.springframework.jdbc.datasource.DataSourceUtils.get<em>Connection</em>(DataSourceUtils.<em>java</em>:77) ... 74 more Caused by: <em>java</em>.<em>sql</em>.<em>SQLException</em>: validate<em>Connection</em> false at <em>com</em>.alibaba.druid.pool.DruidAbstractDataSource.validate<em>Connection</em>(DruidAbstractDataSource.<em>java</em>:1216) at <em>com</em>.alibaba.druid.pool.DruidAbstractDataSource.createPhysical<em>Connection</em>(DruidAbstractDataSource.<em>java</em>:1439) at <em>com</em>.alibaba.druid.pool.DruidDataSource$Create<em>Connection</em>Thread.run(DruidDataSource.<em>java</em>: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

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使用Derby进行JUnit测试时, 报出了org.springframework.transaction.CannotCreateTransactionException: <em>Could</em> not open <em>JDBC</em> <em>Connection</em> for transaction; <em>nested</em> <em>exception</em> is <em>java</em>.<em>sql</em>.SQLNonTransient<em>Connection</em>Exception:

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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 <em>Connection</em>(5)-127.0.0.1] c.alibaba.druid.pool.DruidDataSource:870 - init datasource error, url: jdbc:my<em>sql</em>://localhost:3306/credit-demo?autoReconnect=t...

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新官方支持将<em>com</em>.my<em>sql</em>.jdbc.Driver改为<em>com</em>.my<em>sql</em>.cj.jdbc.Driver,此外my<em>sql</em>8.0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=<em>com</em>.my<em>sql</em>.jdbc.Driver jdb...

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

org.mybatis.spring.MyBatisSystemException: <em>nested</em> <em>exception</em> is org.apache.ibatis.<em>exception</em>s.PersistenceException: ### Error querying database.  Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>E...

服务器报错问题。org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get

org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> exc

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Co

org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> 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 <em>exception</em> [Request processing failed; <em>nested</em> <em>exception</em> is org.mybatis.spring.MyBatisSystemException: <em>nested</em> exce

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``` 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 <em>Connection</em> getConn() throws <em>SQLException</em> { return DriverManager.get<em>Connection</em>(config.getProperty("jdbc.url"), config.getProperty("jdbc.username"), config.getProperty("jdbc.password")); } public static void main(String[] args) throws <em>SQLException</em> { System.out.println(getConn()); } } ``` 报了下面的错误: Exception in thread "main" <em>java</em>.<em>sql</em>.<em>SQLException</em>: Access denied for user 'root '@'localhost' (using password: YES) at <em>com</em>.my<em>sql</em>.cj.jdbc.<em>exception</em>s.SQLError.create<em>SQLException</em>(SQLError.<em>java</em>:695) at <em>com</em>.my<em>sql</em>.cj.jdbc.<em>exception</em>s.SQLError.create<em>SQLException</em>(SQLError.<em>java</em>:663) at <em>com</em>.my<em>sql</em>.cj.jdbc.<em>exception</em>s.SQLError.create<em>SQLException</em>(SQLError.<em>java</em>:653) at <em>com</em>.my<em>sql</em>.cj.jdbc.<em>exception</em>s.<em>SQLException</em>sMapping.translateException(<em>SQLException</em>sMapping.<em>java</em>:115) at <em>com</em>.my<em>sql</em>.cj.jdbc.<em>Connection</em>Impl.createNewIO(<em>Connection</em>Impl.<em>java</em>:1663) at <em>com</em>.my<em>sql</em>.cj.jdbc.<em>Connection</em>Impl.(<em>Connection</em>Impl.<em>java</em>:662) at <em>com</em>.my<em>sql</em>.cj.jdbc.<em>Connection</em>Impl.getInstance(<em>Connection</em>Impl.<em>java</em>:352) at <em>com</em>.my<em>sql</em>.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.<em>java</em>:221) at <em>java</em>.<em>sql</em>.DriverManager.get<em>Connection</em>(DriverManager.<em>java</em>:664) at <em>java</em>.<em>sql</em>.DriverManager.get<em>Connection</em>(DriverManager.<em>java</em>:247) at cn.njit.utils.JdbcUtils.getConn(JdbcUtils.<em>java</em>:20) at cn.njit.utils.JdbcUtils.main(JdbcUtils.<em>java</em>:24) 但是如果在main方法里面直接打印DriverManager.get<em>Connection</em>("jdbc:my<em>sql</em>:///sx?serverTimezone=Asia/Shanghai&useSSL=false", "root", "123456");是没有问题的

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1.Java使用my<em>sql</em>-jdbc连接MySQL出现如下警告:Establishing SSL connection without server's identityverification is not re<em>com</em>mended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+requirements SSL connection must be e

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环境: spring cloud + myBatis + MySql5 报错信息如下: Caused by: org.apache.ibatis.<em>exception</em>s.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbc<em>Connection</em>Excep...

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.CannotGetJdbc<em>Connection</em>Exception: <em>Could</em> not get <em>JDBC</em> <em>Connection</em>; <em>nested</em> <em>exception</em> is <em>java</em>.<em>sql</em>.SQLNonTransientConne...

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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; <em>nested</em> <em>exception</em> is org.springframework.transaction.CannotCreateTransactionException: <em>Could</em> not open <em>JDBC</em> <em>Connection</em> for transaction; <em>nested</em> <em>exception</em> is o

Could not open JDBC Connection for transaction; nested exception is com.alibaba.druid.pool.GetConnec

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