服务器报错问题。org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get [问题点数:60分]

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

<em>org</em>.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is o

解决Springboot + MyBatis框架“Cause: org.springframework.jdbc.CannotGetJdbcConnectionException问题

目录 1 出错类型一(连接MySQL失败) 2 出错类型二(MySQL密码错误) 3 出错类型三(XXXMapper.xml中SQL语句语法<em>问题</em>) 前言: 最近用springboot写项目的时候,写Dao层测试利用MyBatis访问数据库遇到了bug,困扰了一两天,因此记录一下。 1 出错类型一(连接MySQL失败) ### Cause: <em>org</em>.<em>springframework</em>...

org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection

<em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: Failed to obtain JDBC Connection异常<em>问题</em>解决; spring boot ,mybatis ,sqlserver 2000,STS3.9 、jdk8 ,sql<em>jdbc</em>4 1.0-2000的一个环境启动时,调用查询Dao时<em>报错</em>。 具体错误如下: o...

(已解决)org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; neste

<em>问题</em>描述:在连接数据库的时候,在数据库url、用户名、密码等都写正确的时候,依然有可能会出现下面这个错误: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is java.sql.SQLException: Unknown initi...

Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nes

错误 : Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is java.sql.SQLException: Access denied for user ‘*‘@’localhost’ (using password:...

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 <em>org</em>.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service()

[已解决] 数据库连接问题Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionExcept...

我在学习SSM框架做一个小demo 时遇到了这个<em>问题</em>,具体的<em>报错</em>时 Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: Failed to obtain JDBC Connection; nested exception is java.sql.SQLExcep...

org.springframework.jdbc.CannotGetJdbcConnectionException 解决办法

- 数据库配置文件出错 检查项目的<em>jdbc</em>.properties文件,重点看数据库名,用户名,密码是否正确。因为容易疏忽把 l 拼写成 i 或者1 。或者在最后多写入了一个 空格 符号。 正确的配置格式: <em>jdbc</em>.driver=com.mysql.<em>jdbc</em>.Driver <em>jdbc</em>.url=<em>jdbc</em>:mysql://127.0.0.1:3306/database?useUnicode...

【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 <em>org</em>.mybatis.spring.MyBatisSystemException: nested exce

CannotGetJdbcConnectionException:Failed to obtain JDBC Connection

异常如下: Exception in thread &quot;pool-3-thread-2&quot; <em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: or...

SSM测试数据库操作时:org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection

<em>报错</em>如下 Caused by: <em>org</em>.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; neste...

java.lang.TypeNotPresentException: Type org.springframework.jdbc.CannotGetJdbcConnectionException not present

## # 使用springboot-2.0.1.RELEASE整合mongodb-3.4.23版本时报如下错误: ``` java.lang.TypeNotPresentException: Type <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em> not present at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117) at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125) at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) at sun.reflect.generics.visitor.Reifier.reifyTypeArguments(Reifier.java:68) at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:138) at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) at sun.reflect.generics.repository.ClassRepository.getSuperclass(ClassRepository.java:90) at java.lang.Class.getGenericSuperclass(Class.java:777) at <em>org</em>.<em>springframework</em>.core.ResolvableType.getSuperType(ResolvableType.java:452) at <em>org</em>.<em>springframework</em>.core.ResolvableType.as(ResolvableType.java:442) at <em>org</em>.<em>springframework</em>.core.ResolvableType.forClass(ResolvableType.java:1012) at <em>org</em>.<em>springframework</em>.boot.diagnostics.AbstractFailureAnalyzer.getCauseType(AbstractFailureAnalyzer.java:58) at <em>org</em>.<em>springframework</em>.boot.diagnostics.AbstractFailureAnalyzer.analyze(AbstractFailureAnalyzer.java:34) at <em>org</em>.<em>springframework</em>.boot.diagnostics.FailureAnalyzers.analyze(FailureAnalyzers.java:114) at <em>org</em>.<em>springframework</em>.boot.diagnostics.FailureAnalyzers.reportException(FailureAnalyzers.java:107) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.reportFailure(SpringApplication.java:832) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.handleRunFailure(SpringApplication.java:816) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:338) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1255) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1243) at com.xuecheng.manage_cms.ManageCmsApplication.main(ManageCmsApplication.java:15) Caused by: java.lang.ClassNotFoundException: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em> at java.net.URLClassLoader.findClass(URLClassLoader.java:382) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114) ... 20 common frames omitted 2019-09-27 20:40:02.282 [main] ERROR o.s.boot.SpringApplication - Application run failed java.lang.IllegalStateException: Error processing condition on <em>org</em>.<em>springframework</em>.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration.mongoTemplate at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:64) at <em>org</em>.<em>springframework</em>.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) at <em>org</em>.<em>springframework</em>.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:179) at <em>org</em>.<em>springframework</em>.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:141) at <em>org</em>.<em>springframework</em>.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:117) at <em>org</em>.<em>springframework</em>.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:328) at <em>org</em>.<em>springframework</em>.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:233) at <em>org</em>.<em>springframework</em>.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) at <em>org</em>.<em>springframework</em>.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:93) at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:694) at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) at <em>org</em>.<em>springframework</em>.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.refresh(SpringApplication.java:759) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.refreshContext(SpringApplication.java:395) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:327) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1255) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1243) at com.xuecheng.manage_cms.ManageCmsApplication.main(ManageCmsApplication.java:15) Caused by: java.lang.IllegalStateException: Failed to introspect Class [<em>org</em>.<em>springframework</em>.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:599) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:724) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:665) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:633) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1489) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1012) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.BeanTypeRegistry.addBeanTypeForNonAliasDefinition(BeanTypeRegistry.java:164) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.BeanTypeRegistry.addBeanType(BeanTypeRegistry.java:153) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.BeanTypeRegistry.updateTypesIfNecessary(BeanTypeRegistry.java:203) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.BeanTypeRegistry.getNamesForType(BeanTypeRegistry.java:115) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.OnBeanCondition.collectBeanNamesForType(OnBeanCondition.java:265) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:254) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.OnBeanCondition.getMatchingBeans(OnBeanCondition.java:196) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:116) at <em>org</em>.<em>springframework</em>.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ... 17 common frames omitted Caused by: java.lang.NoClassDefFoundError: <em>org</em>/<em>springframework</em>/data/mongodb/core/convert/MongoCustomConversions at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.getDeclaredMethods(Class.java:1975) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ... 34 common frames omitted Caused by: java.lang.ClassNotFoundException: <em>org</em>.<em>springframework</em>.data.mongodb.core.convert.MongoCustomConversions at java.net.URLClassLoader.findClass(URLClassLoader.java:382) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 38 common frames omitted 2019-09-27 20:40:02.287 [main] INFO o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext - Closing <em>org</em>.<em>springframework</em>.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@59662a0b: startup date [Fri Sep 27 20:39:59 CST 2019]; root of context hierarchy 2019-09-27 20:40:02.293 [main] WARN o.s.boot.SpringApplication - Unable to close ApplicationContext java.lang.IllegalStateException: Failed to introspect Class [<em>org</em>.<em>springframework</em>.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:599) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:724) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:665) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:633) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1489) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:420) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:390) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:511) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:503) at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1198) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.getExitCodeFromMappedException(SpringApplication.java:889) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.getExitCodeFromException(SpringApplication.java:875) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.handleExitCode(SpringApplication.java:861) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.handleRunFailure(SpringApplication.java:810) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:338) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1255) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1243) at com.xuecheng.manage_cms.ManageCmsApplication.main(ManageCmsApplication.java:15) Caused by: java.lang.NoClassDefFoundError: <em>org</em>/<em>springframework</em>/data/mongodb/core/convert/MongoCustomConversions at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.getDeclaredMethods(Class.java:1975) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ... 20 common frames omitted Caused by: java.lang.ClassNotFoundException: <em>org</em>.<em>springframework</em>.data.mongodb.core.convert.MongoCustomConversions at java.net.URLClassLoader.findClass(URLClassLoader.java:382) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 24 common frames omitted Process finished with exit code 1 ``` **application.yml配置文件** **server: port: 31001 spring: application: name: service-manager-test data: mongodb: uri: mongodb://localhost:27017 database: test authentication-database: admin username: root password: root**

java.lang.TypeNotPresentException: Type org.springframework.jdbc.CannotGetJdbcConnectionException no

java.lang.TypeNotPresentException: Type <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em> not present 是因为什么报的错? 是配置文件错了还是缺少依赖? 2019-09-06 09:41:49.189 [main] INFO c.x.manage_cms.ManageCmsApp...

Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection

<em>问题</em>描述: 应用程序部署后运行正常,运行一段时间后,调用某个服务后,就出现如下的<em>报错</em>,重启后又正常 ``` 2019-09-25 17:11:17.686 ERROR 2072 --- [http-nio-801-exec-12] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is <em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: Failed to obtain JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60000, active 20, maxActive 20, creating 0 ### The error may exist in cn/stylefeng/guns/modular/mall/mapper/SetHskLevelMapper.java (best guess) ### The error may involve cn.stylefeng.guns.modular.mall.mapper.SetHskLevelMapper.selectOne ### The error occurred while executing a query ### Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: Failed to obtain JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60000, active 20, maxActive 20, creating 0] with root cause com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60000, active 20, maxActive 20, creating 0 at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1536) at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:1272) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5007) at com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:680) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5003) at com.alibaba.druid.filter.FilterAdapter.dataSource_getConnection(FilterAdapter.java:2745) at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5003) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1250) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1242) at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:89) at sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at <em>org</em>.<em>springframework</em>.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at com.alibaba.druid.support.spring.stat.DruidStatInterceptor.invoke(DruidStatInterceptor.java:72) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at <em>org</em>.<em>springframework</em>.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) at com.sun.proxy.$Proxy93.getConnection(Unknown Source) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) at <em>org</em>.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:82) at <em>org</em>.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:68) at <em>org</em>.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:338) at <em>org</em>.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84) at <em>org</em>.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) at <em>org</em>.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:326) at <em>org</em>.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at <em>org</em>.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at <em>org</em>.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at <em>org</em>.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) at com.sun.proxy.$Proxy180.query(Unknown Source) at <em>org</em>.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at <em>org</em>.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at <em>org</em>.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) at sun.reflect.GeneratedMethodAccessor138.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at <em>org</em>.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) at com.sun.proxy.$Proxy97.selectOne(Unknown Source) at <em>org</em>.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166) at com.baomidou.mybatisplus.core.override.PageMapperMethod.execute(PageMapperMethod.java:101) at com.baomidou.mybatisplus.core.override.PageMapperProxy.invoke(PageMapperProxy.java:64) at com.sun.proxy.$Proxy129.selectOne(Unknown Source) at cn.stylefeng.guns.modular.mall.service.SetHskLevelService.model(SetHskLevelService.java:25) at cn.stylefeng.guns.modular.mall.service.SetHskLevelService$$FastClassBySpringCGLIB$$5431aaeb.invoke() at <em>org</em>.<em>springframework</em>.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at <em>org</em>.<em>springframework</em>.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at com.alibaba.druid.support.spring.stat.DruidStatInterceptor.invoke(DruidStatInterceptor.java:72) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at <em>org</em>.<em>springframework</em>.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688) at cn.stylefeng.guns.modular.mall.service.SetHskLevelService$$EnhancerBySpringCGLIB$$ead2cf8a.model() at cn.stylefeng.guns.modular.mall.api.HskController.getHskLevel(HskController.java:1039) at cn.stylefeng.guns.modular.mall.api.HskController.getListenTotalReport(HskController.java:711) at sun.reflect.GeneratedMethodAccessor157.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at <em>org</em>.<em>springframework</em>.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) at <em>org</em>.<em>springframework</em>.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at <em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) at <em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) at <em>org</em>.<em>springframework</em>.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) at <em>org</em>.<em>springframework</em>.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897) at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) at <em>org</em>.<em>springframework</em>.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at <em>org</em>.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at <em>org</em>.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at <em>org</em>.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at <em>org</em>.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at <em>org</em>.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at <em>org</em>.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at <em>org</em>.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at <em>org</em>.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at <em>org</em>.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at <em>org</em>.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at <em>org</em>.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387) at <em>org</em>.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at <em>org</em>.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at cn.stylefeng.roses.core.xss.XssFilter.doFilter(XssFilter.java:31) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at <em>org</em>.<em>springframework</em>.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at <em>org</em>.<em>springframework</em>.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at <em>org</em>.<em>springframework</em>.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) at <em>org</em>.<em>springframework</em>.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at <em>org</em>.<em>springframework</em>.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at <em>org</em>.<em>springframework</em>.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at <em>org</em>.<em>springframework</em>.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) at <em>org</em>.<em>springframework</em>.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at <em>org</em>.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at <em>org</em>.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at <em>org</em>.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) at <em>org</em>.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at <em>org</em>.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at <em>org</em>.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at <em>org</em>.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at <em>org</em>.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at <em>org</em>.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at <em>org</em>.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791) at <em>org</em>.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) at <em>org</em>.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at <em>org</em>.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source) ```

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!

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 <em>org</em>.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.servic

java.lang.TypeNotPresentException报错解决方案

使用STS,给项目install,tomcat:run的时候,报下面的错: java.lang.TypeNotPresentException 或者 ClassNotFoundException.......... 第一步:     首先可以查看一下,你的JRE使用的是不是STS默认用的路径: window--&amp;gt;preferences-------&amp;gt;    .......修改...

org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested

使用新版的Mysql连接<em>jdbc</em>,经常会报这个异常,只需要在 设置URL的时候后面加上:?serverTimezone=GMT%2B8 &lt;property name="url" value="<em>jdbc</em>:mysql://localhost:3306/selection_course?useUnicode=true&amp;amp;characterEncoding=utf-8?serverTi...

Java报错org.springframework.jdbc.CannotGetJdbcConnectionException,Could not get JDBC Connection;

关于这个<em>报错</em>:<em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>,<em>Could</em> not get JDBC Connection;因为不能获取JDBC连接,主要有2大错误: 一.数据库配置文件错误 查看项目的<em>jdbc</em>.propertise文件,是否全部写正确了。查看数据库名,用户名,密码是否正确 正确的配置如下: <em>jdbc</em>.dr...

Type org.springframework.jdbc.CannotGetJdbcConnectionException not present

2019-10-24 16:27:13.704 [main] DEBUG o.s.b.diagnostics.FailureAnalyzers - FailureAnalyzer <em>org</em>.<em>springframework</em>.boot.autoconfigure.<em>jdbc</em>.HikariDriverConfigurationFailureAnalyzer@4bb1b96b failed java.lang...

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

<em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.CannotGetJdbcConnectio...

Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection;

ERROR o.s.s.s.TaskUtils$LoggingErrorHandler - Unexpected error occurred in scheduled task. <em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.PersistenceExcep...

springCloud微服务调用失败【CannotGetJdbcConnectionException: Failed to obtain JDBC Connection】

详情如下: 2019-07-28 10:56:18.229 ERROR 16212 --- [nio-8081-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception ...

(已解决)### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException:

<em>问题</em>:<em>jdbc</em>不能连接 <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: 如下<em>报错</em>: Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; ...

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

这几天在用maven写项目 过程中遇到一个坑 是本人粗心大意了 一直<em>报错</em>No suitable driver 然后就一心去找这个错误 网上找了很多遍 大部分都是说oracle驱动<em>问题</em>  于是我怀疑是不是我在maven命令中加入oracle驱动出了<em>问题</em> 但事实证明没有错误 (maven命令下面附图) 驱动换了好几个 依然<em>报错</em>  o<em>jdbc</em>6-11.1.0.6.0这个驱动 会多报一个错 说是这个...

Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could no

代码移植过程中由于用了新版本的MySQL数据库,版本8+,一直出现如题,连不上数据库的错误。其实就是porm.xml里面版本需要改,还有<em>jdbc</em>.properties里面参数也要改: &amp;lt;dependency&amp;gt; &amp;lt;groupId&amp;gt;mysql&amp;lt;/groupId&amp;gt; &amp;lt;artifactId&amp;gt;mysql-connector-j...

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。 <em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: <em>org</em>.sprin...

org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver

遇到这个异常,并花了不少时间。 异常:<em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.<em>jdbc</em>.Driver ' 不能加载驱动。 这个异常原因: 1.mysql驱动没有找到:解决方法,到oracle下载mysql对应版本的驱动, 下载什么版本的mysql驱动呢

数据库连接问题Error querying database. Cause: org.springframework.jdbc.Cannot

jdk版本: jdk1.8.0_211 maven版本:apache-maven-3.6.1 tomcat版本:apache-tomcat-8.5.41 数据库:mysql8.0.16 最后的解决办法:mysql-connector-java 改成5.1.47 &lt;dependency&gt; &lt;groupId&gt;mysql&lt;/groupId&gt...

Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException

spring boot + mybaits 出现异常 The error may exist in file [F:\javatext\basi-code\frame\springboot-query2\target\classes\mapper\UserMapper.xml] The error may involve cn.itcast.mapper.UserMapper.queryUserL...

Springboot连接 Druid数据源报错Failed to obtain JDBC Connection: dbType not support

前言 &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;最近项目中需要配置多数据源,在执行查询方法时遇到一个错误Failed to obtain JDBC Connection: dbType not support,记录下解决过程。 正文 <em>问题</em>再现 Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: Failed to...

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[<em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,214DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:43:58,221DEBUG[<em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:43:58,222DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet] - 2017-12-28 12:43:58,317DEBUG[<em>org</em>.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,335DEBUG[<em>org</em>.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:43:58,366DEBUG[<em>org</em>.<em>springframework</em>.<em>jdbc</em>.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<em>报错</em>,如下: 2017-12-28 12:47:41,261DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,264DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] - 2017-12-28 12:47:41,269DEBUG[<em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory] - 2017-12-28 12:47:41,270DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet] - 2017-12-28 12:47:41,338DEBUG[<em>org</em>.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,348DEBUG[<em>org</em>.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:41,378DEBUG[<em>org</em>.<em>springframework</em>.<em>jdbc</em>.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[<em>org</em>.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[<em>org</em>.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[<em>org</em>.mybatis.spring.SqlSessionUtils] - 2017-12-28 12:47:51,476DEBUG[<em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceTransactionManager] - 2017-12-28 12:47:51,478DEBUG[<em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver] - <!DOCTYPE mapper PUBLIC "-//mybatis.<em>org</em>//DTD Mapper 3.0//EN" "http://mybatis.<em>org</em>/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,<em>jdbc</em>Type=BIGINT} delete from tb_item where id = #{id,<em>jdbc</em>Type=BIGINT} delete from tb_item insert into tb_item (id, title, sell_point, price, num, barcode, image, cid, status, created, updated) values (#{id,<em>jdbc</em>Type=BIGINT}, #{title,<em>jdbc</em>Type=VARCHAR}, #{sellPoint,<em>jdbc</em>Type=VARCHAR}, #{price,<em>jdbc</em>Type=BIGINT}, #{num,<em>jdbc</em>Type=INTEGER}, #{barcode,<em>jdbc</em>Type=VARCHAR}, #{image,<em>jdbc</em>Type=VARCHAR}, #{cid,<em>jdbc</em>Type=BIGINT}, #{status,<em>jdbc</em>Type=TINYINT}, #{created,<em>jdbc</em>Type=TIMESTAMP}, #{updated,<em>jdbc</em>Type=TIMESTAMP}) insert into tb_item id, title, sell_point, price, num, barcode, image, cid, status, created, updated, #{id,<em>jdbc</em>Type=BIGINT}, #{title,<em>jdbc</em>Type=VARCHAR}, #{sellPoint,<em>jdbc</em>Type=VARCHAR}, #{price,<em>jdbc</em>Type=BIGINT}, #{num,<em>jdbc</em>Type=INTEGER}, #{barcode,<em>jdbc</em>Type=VARCHAR}, #{image,<em>jdbc</em>Type=VARCHAR}, #{cid,<em>jdbc</em>Type=BIGINT}, #{status,<em>jdbc</em>Type=TINYINT}, #{created,<em>jdbc</em>Type=TIMESTAMP}, #{updated,<em>jdbc</em>Type=TIMESTAMP}, select count(*) from tb_item update tb_item id = #{record.id,<em>jdbc</em>Type=BIGINT}, title = #{record.title,<em>jdbc</em>Type=VARCHAR}, sell_point = #{record.sellPoint,<em>jdbc</em>Type=VARCHAR}, price = #{record.price,<em>jdbc</em>Type=BIGINT}, num = #{record.num,<em>jdbc</em>Type=INTEGER}, barcode = #{record.barcode,<em>jdbc</em>Type=VARCHAR}, image = #{record.image,<em>jdbc</em>Type=VARCHAR}, cid = #{record.cid,<em>jdbc</em>Type=BIGINT}, status = #{record.status,<em>jdbc</em>Type=TINYINT}, created = #{record.created,<em>jdbc</em>Type=TIMESTAMP}, updated = #{record.updated,<em>jdbc</em>Type=TIMESTAMP}, update tb_item set id = #{record.id,<em>jdbc</em>Type=BIGINT}, title = #{record.title,<em>jdbc</em>Type=VARCHAR}, sell_point = #{record.sellPoint,<em>jdbc</em>Type=VARCHAR}, price = #{record.price,<em>jdbc</em>Type=BIGINT}, num = #{record.num,<em>jdbc</em>Type=INTEGER}, barcode = #{record.barcode,<em>jdbc</em>Type=VARCHAR}, image = #{record.image,<em>jdbc</em>Type=VARCHAR}, cid = #{record.cid,<em>jdbc</em>Type=BIGINT}, status = #{record.status,<em>jdbc</em>Type=TINYINT}, created = #{record.created,<em>jdbc</em>Type=TIMESTAMP}, updated = #{record.updated,<em>jdbc</em>Type=TIMESTAMP} update tb_item title = #{title,<em>jdbc</em>Type=VARCHAR}, sell_point = #{sellPoint,<em>jdbc</em>Type=VARCHAR}, price = #{price,<em>jdbc</em>Type=BIGINT}, num = #{num,<em>jdbc</em>Type=INTEGER}, barcode = #{barcode,<em>jdbc</em>Type=VARCHAR}, image = #{image,<em>jdbc</em>Type=VARCHAR}, cid = #{cid,<em>jdbc</em>Type=BIGINT}, status = #{status,<em>jdbc</em>Type=TINYINT}, created = #{created,<em>jdbc</em>Type=TIMESTAMP}, updated = #{updated,<em>jdbc</em>Type=TIMESTAMP}, where id = #{id,<em>jdbc</em>Type=BIGINT} update tb_item set title = #{title,<em>jdbc</em>Type=VARCHAR}, sell_point = #{sellPoint,<em>jdbc</em>Type=VARCHAR}, price = #{price,<em>jdbc</em>Type=BIGINT}, num = #{num,<em>jdbc</em>Type=INTEGER}, barcode = #{barcode,<em>jdbc</em>Type=VARCHAR}, image = #{image,<em>jdbc</em>Type=VARCHAR}, cid = #{cid,<em>jdbc</em>Type=BIGINT}, status = #{status,<em>jdbc</em>Type=TINYINT}, created = #{created,<em>jdbc</em>Type=TIMESTAMP}, updated = #{updated,<em>jdbc</em>Type=TIMESTAMP} where id = #{id,<em>jdbc</em>Type=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<em>问题</em>: ![图片说明](https://img-ask.csdn.net/upload/201712/28/1514454719_724728.png) 另外navicat访问数据库没<em>问题</em>。我想会不会是连接池配置的<em>问题</em>,也许那些配置可能导致这种情况??

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

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### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Coul...

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org.springframework.jdbc.CannotGetJdbcConnectionException

<em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.Persiste

求救.jdbc.CannotGetJdbcConnectionException

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Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> 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: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at <em>org</em>.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26) at <em>org</em>.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111) at <em>org</em>.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at <em>org</em>.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 <em>org</em>.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:354) ... 51 more Caused by: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60074, active 29, maxActive 300 at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) at <em>org</em>.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80) at <em>org</em>.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:66) at <em>org</em>.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at <em>org</em>.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at <em>org</em>.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at <em>org</em>.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at <em>org</em>.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at <em>org</em>.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at <em>org</em>.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at <em>org</em>.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.haier.openplatform.cat.interceptor.BuriedPointMybatisInterceptor.intercept(BuriedPointMybatisInterceptor.java:50) at <em>org</em>.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) at com.sun.proxy.$Proxy48.query(Unknown Source) at <em>org</em>.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 <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.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<em>问题</em> 最后导致系统宕机 dubbo服务连不上

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spring: datasource: driver-class-name: com.mysql.<em>jdbc</em>.Driver url: <em>jdbc</em>:mysql://localhost:3306/test713?serverTimezone=GMT username: XFour password: xuqingyuan753 <em>org</em>.<em>springframework</em>.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [<em>org</em>/<em>springframework</em>/boot/autoconfigure/<em>jdbc</em>/XADataSourceAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is <em>org</em>.<em>springframework</em>.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalStateException: Unable to create XADataSource instance from 'com.mysql.<em>jdbc</em>.<em>jdbc</em>2.optional.MysqlXADataSource' at <em>org</em>.<em>springframework</em>.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1128) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1022) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:512) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:296) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:754) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.2.RELEASE.jar:1.4.2.RELEASE] at <em>org</em>.<em>springframework</em>.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-1.4.2.RELEASE.jar:1.4.2.RELEASE] at <em>org</em>.<em>springframework</em>.boot.SpringApplication.refreshContext(SpringApplication.java:371) [spring-boot-1.4.2.RELEASE.jar:1.4.2.RELEASE] at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.4.2.RELEASE.jar:1.4.2.RELEASE] at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1186) [spring-boot-1.4.2.RELEASE.jar:1.4.2.RELEASE] at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1175) [spring-boot-1.4.2.RELEASE.jar:1.4.2.RELEASE] at com.xfour.AppRun.main(AppRun.java:16) [main/:na] Caused by: <em>org</em>.<em>springframework</em>.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalStateException: Unable to create XADataSource instance from 'com.mysql.<em>jdbc</em>.<em>jdbc</em>2.optional.MysqlXADataSource' at <em>org</em>.<em>springframework</em>.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] at <em>org</em>.<em>springframework</em>.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] ... 20 common frames omitted Caused by: java.lang.IllegalStateException: Unable to create XADataSource instance from 'com.mysql.<em>jdbc</em>.<em>jdbc</em>2.optional.MysqlXADataSource' at <em>org</em>.<em>springframework</em>.boot.autoconfigure.<em>jdbc</em>.XADataSourceAutoConfiguration.createXaDataSourceInstance(XADataSourceAutoConfiguration.java:103) ~[spring-boot-autoconfigure-1.4.2.RELEASE.jar:1.4.2.RELEASE] at <em>org</em>.<em>springframework</em>.boot.autoconfigure.<em>jdbc</em>.XADataSourceAutoConfiguration.createXaDataSource(XADataSourceAutoConfiguration.java:90) ~[spring-boot-autoconfigure-1.4.2.RELEASE.jar:1.4.2.RELEASE] at <em>org</em>.<em>springframework</em>.boot.autoconfigure.<em>jdbc</em>.XADataSourceAutoConfiguration.dataSource(XADataSourceAutoConfiguration.java:72) ~[spring-boot-autoconfigure-1.4.2.RELEASE.jar:1.4.2.RELEASE] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_112] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_112] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_112] at <em>org</em>.<em>springframework</em>.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE] ... 21 common frames omitted

Could not get JDBC Connection

<em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is <em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.<em>jdbc</em>.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: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is <em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.microsoft.sqlserver.<em>jdbc</em>.SQLServerDriver'

springCloud项目Eureka注册中心和各个微服务启动时报错,启动不起来

springCloud项目Eureka注册中心和各个微服务启动时<em>报错</em>,启动不起来 我用的idea,在别人电脑上可以运行,到我这就<em>报错</em> 跪求大神看看 ``` java.lang.TypeNotPresentException: Type <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em> not present at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117) at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125) at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) at sun.reflect.generics.visitor.Reifier.reifyTypeArguments(Reifier.java:68) at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:138) at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) at sun.reflect.generics.repository.ClassRepository.getSuperclass(ClassRepository.java:87) at java.lang.Class.getGenericSuperclass(Class.java:777) at <em>org</em>.<em>springframework</em>.core.ResolvableType.getSuperType(ResolvableType.java:466) at <em>org</em>.<em>springframework</em>.core.ResolvableType.as(ResolvableType.java:455) at <em>org</em>.<em>springframework</em>.core.ResolvableType.forClass(ResolvableType.java:1037) at <em>org</em>.<em>springframework</em>.boot.diagnostics.AbstractFailureAnalyzer.getCauseType(AbstractFailureAnalyzer.java:58) at <em>org</em>.<em>springframework</em>.boot.diagnostics.AbstractFailureAnalyzer.analyze(AbstractFailureAnalyzer.java:34) at <em>org</em>.<em>springframework</em>.boot.diagnostics.FailureAnalyzers.analyze(FailureAnalyzers.java:114) at <em>org</em>.<em>springframework</em>.boot.diagnostics.FailureAnalyzers.reportException(FailureAnalyzers.java:107) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.reportFailure(SpringApplication.java:848) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.handleRunFailure(SpringApplication.java:832) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:327) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1260) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1248) at com.dhcc.micro.registry.RegistryEntry.main(RegistryEntry.java:15) Caused by: java.lang.ClassNotFoundException: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em> at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114) ... 20 common frames omitted ERROR [registry] 2019-09-20 10:47:49.146 [main] o.s.b.SpringApplication.reportFailure: Application run failed <em>org</em>.<em>springframework</em>.beans.factory.BeanCreationException: Error creating bean with name 'connManFactory' defined in class path resource [<em>org</em>/<em>springframework</em>/cloud/commons/httpclient/HttpClientConfiguration$ApacheHttpClientConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [<em>org</em>.<em>springframework</em>.cloud.commons.httpclient.DefaultApacheHttpClientConnectionManagerFactory] from ClassLoader [sun.misc.Launcher$AppClassLoader@14dad5dc] at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory$$Lambda$136/1567705314.getObject(Unknown Source) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) at <em>org</em>.<em>springframework</em>.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.refresh(SpringApplication.java:775) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.refreshContext(SpringApplication.java:397) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:316) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1260) at <em>org</em>.<em>springframework</em>.boot.SpringApplication.run(SpringApplication.java:1248) at com.dhcc.micro.registry.RegistryEntry.main(RegistryEntry.java:15) Caused by: java.lang.IllegalStateException: Failed to introspect Class [<em>org</em>.<em>springframework</em>.cloud.commons.httpclient.DefaultApacheHttpClientConnectionManagerFactory] from ClassLoader [sun.misc.Launcher$AppClassLoader@14dad5dc] at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:686) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:546) at <em>org</em>.<em>springframework</em>.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:207) at <em>org</em>.<em>springframework</em>.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:189) at <em>org</em>.<em>springframework</em>.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(InitDestroyAnnotationBeanPostProcessor.java:128) at <em>org</em>.<em>springframework</em>.context.annotation.CommonAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(CommonAnnotationBeanPostProcessor.java:297) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:1044) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:550) ... 16 common frames omitted Caused by: java.lang.NoClassDefFoundError: <em>org</em>/apache/http/config/RegistryBuilder at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.getDeclaredMethods(Class.java:1975) at <em>org</em>.<em>springframework</em>.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:668) ... 23 common frames omitted Caused by: java.lang.ClassNotFoundException: <em>org</em>.apache.http.config.RegistryBuilder at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 27 common frames omitted Process finished with exit code 1 ```

Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could not b

<em>报错</em>信息: Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlyi...

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sqlserver 2019-03-25 16:00:08,887 ERROR impl.OrderServiceImpl.selectOrderB

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

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at <em>org</em>.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfP...

JBDC连接问题出现异常!!

package com; import java.sql.*; import javax.sql.*; public class Test { public static void main(Str

Oracle数据源:org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection;

异常如下: Caused by: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is <em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of

Warning:(5, 57) java: org.springframework.web.servlet.config.annotation中的org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter已过时???

IDEA中maven项目出现这个<em>问题</em>,是什么意思 ![图片说明](https://img-ask.csdn.net/upload/202004/16/1587018736_124873.png)

解决多数据事务提交异常nested exception is javax.transaction.RollbackException: Prepare: NO vote,atomikos版本3.9.3

使用atomikos时,事务默认超时时间是100000毫秒,超过这个时间,提交事务就会抛出异常 nested exception is javax.transaction.RollbackException: Prepare: NO vote 1、增加配置文件transactions.properties(jta.properties) 需要在classpath下建一个transaction...

jdbc连接oracle数据库失败

各位大神,这个<em>问题</em>卡好久了,数据库一直连不上,不多说,直接上代码: <em>jdbc</em>.properties文件: ``` <em>jdbc</em>.driverClassName=oracle.<em>jdbc</em>.driver.OracleDriver <em>jdbc</em>.url=<em>jdbc</em>:oracle:thin:@192.168.1.106:1521:orcl <em>jdbc</em>.username=root <em>jdbc</em>.password=root <em>jdbc</em>.maxActive=50 ``` tnsnames.ora文件: ``` ORACLR_CONNECTION_DATA = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) ) (CONNECT_DATA = (SID = CLRExtProc) (PRESENTATION = RO) ) ) ORCL = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.106)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl.254.209.161) ) ) ``` listener.ora文件: ``` SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = CLRExtProc) (ORACLE_HOME = D:\install\Oracle\product\11.2.0\dbhome_1) (PROGRAM = extproc) (ENVS = "EXTPROC_DLLS=ONLY:D:\install\Oracle\product\11.2.0\dbhome_1\bin\oraclr11.dll") ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) ) (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.106)(PORT = 1521)) ) ) ADR_BASE_LISTENER = D:\install\Oracle ``` <em>报错</em>信息 ``` <em>org</em>.<em>springframework</em>.beans.factory.BeanCreationException: Error creating bean with name 'mappedStatementStrategy' defined in file [C:\Users\Max\workspace\.metadata\.plugins\<em>org</em>.eclipse.wst.server.core\tmp1\wtpwebapps\iPlat4j3\WEB-INF\classes\spring\framework\applicationContext-ibatis.xml]: Invocation of init method failed; nested exception is <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is <em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常: The Network Adapter could not establish the connection) Caused by: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is <em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常: The Network Adapter could not establish the connection) Caused by: <em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常: The Network Adapter could not establish the connection) at <em>org</em>.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:855) at <em>org</em>.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:112) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.core.support.JdbcDaoSupport.getConnection(JdbcDaoSupport.java:119) at com.baosight.iplat4j.core.sqldao.impl.NamedSqlDaoSpringJdbcImpl.getDbConnection(NamedSqlDaoSpringJdbcImpl.java:364) at com.baosight.iplat4j.core.sqldao.impl.NamedSqlDaoDiagnoseImpl.getDbConnection(NamedSqlDaoDiagnoseImpl.java:81) at com.baosight.iplat4j.ep.MappedStatementStrategyWithPreLoadImpl.init(MappedStatementStrategyWithPreLoadImpl.java:36) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1160) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1122) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1085) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:429) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:250) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:141) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:247) at <em>org</em>.<em>springframework</em>.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:161) at <em>org</em>.<em>springframework</em>.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:273) at <em>org</em>.<em>springframework</em>.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:346) at <em>org</em>.<em>springframework</em>.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:156) at <em>org</em>.<em>springframework</em>.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:246) at <em>org</em>.<em>springframework</em>.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184) at <em>org</em>.<em>springframework</em>.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49) at <em>org</em>.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939) at <em>org</em>.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) at <em>org</em>.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at <em>org</em>.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at <em>org</em>.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Caused by: java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection at oracle.<em>jdbc</em>.driver.DatabaseError.throwSqlException(DatabaseError.java:112) at oracle.<em>jdbc</em>.driver.DatabaseError.throwSqlException(DatabaseError.java:146) at oracle.<em>jdbc</em>.driver.DatabaseError.throwSqlException(DatabaseError.java:255) at oracle.<em>jdbc</em>.driver.T4CConnection.logon(T4CConnection.java:387) at oracle.<em>jdbc</em>.driver.PhysicalConnection.(PhysicalConnection.java:441) at oracle.<em>jdbc</em>.driver.T4CConnection.(T4CConnection.java:165) at oracle.<em>jdbc</em>.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35) at oracle.<em>jdbc</em>.driver.OracleDriver.connect(OracleDriver.java:801) at <em>org</em>.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:37) at <em>org</em>.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:290) at <em>org</em>.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:877) at <em>org</em>.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:851) ... 34 more ``` **_基本可以确定是数据库<em>问题</em>或者是配置文件<em>问题</em>,因为之前用过是好的,换了一个数据库就不行了,而且plsql可以正常连接数据库_**

期望大神帮忙解决数据库连接问题,谢谢

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错误: Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is <em>org</em>.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionF...

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在自己的本地IDE上跑的挺好 但是部署到阿里云centos上之后就开始<em>报错</em> <em>报错</em>信息: 解决办法: db.propertity 连接数据库是添加时区选项 ​ <em>jdbc</em>.<em>jdbc</em>Url=<em>jdbc</em>:mysql://localhost:3306/***?&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeC...

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四月 17, 2019 2:15:44 上午 <em>org</em>.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 <em>org</em>.mybatis.spring.MyBatisSystemException: nested exception is <em>org</em>.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.<em>jdbc</em>.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: <em>org</em>.<em>springframework</em>.<em>jdbc</em>.<em>CannotGetJdbcConnectionException</em>: <em>Could</em> not get JDBC Connection; nested exception is java.sql.SQLException: com.mysql.cj.<em>jdbc</em>.Driver] with root cause java.lang.ClassNotFoundException: com.mysql.cj.<em>jdbc</em>.Driver at <em>org</em>.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at <em>org</em>.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 <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) at <em>org</em>.<em>springframework</em>.<em>jdbc</em>.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) at <em>org</em>.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81) at <em>org</em>.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) at <em>org</em>.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279) at <em>org</em>.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72) at <em>org</em>.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59) at <em>org</em>.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at <em>org</em>.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at <em>org</em>.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at <em>org</em>.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at <em>org</em>.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) at <em>org</em>.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102) at <em>org</em>.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 <em>org</em>.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) at com.sun.proxy.$Proxy30.selectOne(Unknown Source) at <em>org</em>.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:163) at <em>org</em>.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68) at <em>org</em>.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 <em>org</em>.<em>springframework</em>.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at <em>org</em>.<em>springframework</em>.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at <em>org</em>.<em>springframework</em>.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:267) at <em>org</em>.<em>springframework</em>.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at <em>org</em>.<em>springframework</em>.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at <em>org</em>.<em>springframework</em>.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at <em>org</em>.<em>springframework</em>.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$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 <em>org</em>.<em>springframework</em>.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at <em>org</em>.<em>springframework</em>.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706) at <em>org</em>.<em>springframework</em>.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at <em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) at <em>org</em>.<em>springframework</em>.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) at <em>org</em>.<em>springframework</em>.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) at <em>org</em>.<em>springframework</em>.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at <em>org</em>.<em>springframework</em>.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at <em>org</em>.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at <em>org</em>.<em>springframework</em>.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at <em>org</em>.<em>springframework</em>.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at <em>org</em>.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at <em>org</em>.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at <em>org</em>.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at <em>org</em>.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at <em>org</em>.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at <em>org</em>.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at <em>org</em>.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at <em>org</em>.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at <em>org</em>.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at <em>org</em>.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) at <em>org</em>.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at <em>org</em>.apache.tomcat.util.net.JIoEndpoint$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 <em>jdbc</em>.driver=com.mysql.cj.<em>jdbc</em>.Driver <em>jdbc</em>.url=<em>jdbc</em>:mysql://localhost:3306/taotao?useSSL=false&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF8 <em>jdbc</em>.username=root <em>jdbc</em>.password=123 连接池配置

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