MySQL连接报错

spring.datasource.url连接信息出问题。

报错信息

{
  "timestamp": "2019-11-12T11:07:30.870+0000",
  "status": 500,
  "error": "Internal Server Error",
  "message": "nested exception is org.apache.ibatis.exceptions.PersistenceException: \r\n### Error querying database.  Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.\r\n### The error may exist in file [E:\\eclipse\\workspace\\cms_jd1911\\target\\classes\\mapper\\UserMapper.xml]\r\n### The error may involve com.briup.dao.UserMapper.selectByExample\r\n### The error occurred while executing a query\r\n### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.",
  "trace": "org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: \r\n### Error querying database.  Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.\r\n### The error may exist in file [E:\\eclipse\\workspace\\cms_jd1911\\target\\classes\\mapper\\UserMapper.xml]\r\n### The error may involve com.briup.dao.UserMapper.selectByExample\r\n### The error occurred while executing a query\r\n### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.\r\n\tat org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:92)\r\n\tat org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440)\r\n\tat com.sun.proxy.$Proxy75.selectList(Unknown Source)\r\n\tat org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:223)\r\n\tat org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:147)\r\n\tat org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:80)\r\n\tat org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:93)\r\n\tat com.sun.proxy.$Proxy76.selectByExample(Unknown Source)\r\n\tat com.briup.service.impl.UserImpl.findAll(UserImpl.java:30)\r\n\tat com.briup.web.controller.TestController.findAll(TestController.java:28)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)\r\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)\r\n\tat java.lang.reflect.Method.invoke(Unknown Source)\r\n\tat org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)\r\n\tat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)\r\n\tat org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)\r\n\tat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888)\r\n\tat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)\r\n\tat org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)\r\n\tat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)\r\n\tat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)\r\n\tat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)\r\n\tat org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)\r\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:634)\r\n\tat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)\r\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:741)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)\r\n\tat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)\r\n\tat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)\r\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)\r\n\tat org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)\r\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)\r\n\tat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)\r\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)\r\n\tat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)\r\n\tat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)\r\n\tat org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)\r\n\tat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)\r\n\tat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)\r\n\tat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)\r\n\tat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)\r\n\tat org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)\r\n\tat org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)\r\n\tat org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)\r\n\tat org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579)\r\n\tat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)\r\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)\r\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)\r\n\tat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)\r\n\tat java.lang.Thread.run(Unknown Source)\r\nCaused by: org.apache.ibatis.exceptions.PersistenceException: \r\n### Error querying database.  Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.\r\n### The error may exist in file [E:\\eclipse\\workspace\\cms_jd1911\\target\\classes\\mapper\\UserMapper.xml]\r\n### The error may involve com.briup.dao.UserMapper.selectByExample\r\n### The error occurred while executing a query\r\n### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.\r\n\tat org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)\r\n\tat org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:149)\r\n\tat org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)\r\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)\r\n\tat java.lang.reflect.Method.invoke(Unknown Source)\r\n\tat org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426)\r\n\t... 58 more\r\nCaused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.\r\n\tat org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:82)\r\n\tat org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80)\r\n\tat org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67)\r\n\tat org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336)\r\n\tat org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:86)\r\n\tat org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62)\r\n\tat org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324)\r\n\tat org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)\r\n\tat org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)\r\n\tat org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)\r\n\tat org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147)\r\n\t... 64 more\r\nCaused by: java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.\r\n\tat com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110)\r\n\tat com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)\r\n\tat com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)\r\n\tat com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)\r\n\tat com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73)\r\n\tat com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:906)\r\n\tat com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:831)\r\n\tat com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)\r\n\tat com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)\r\n\tat com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199)\r\n\tat com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)\r\n\tat com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:353)\r\n\tat com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201)\r\n\tat com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473)\r\n\tat com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:562)\r\n\tat com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)\r\n\tat com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)\r\n\tat org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158)\r\n\tat org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116)\r\n\tat org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)\r\n\t... 74 more\r\nCaused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.\r\n\tat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)\r\n\tat sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)\r\n\tat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)\r\n\tat java.lang.reflect.Constructor.newInstance(Unknown Source)\r\n\tat com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)\r\n\tat com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:85)\r\n\tat com.mysql.cj.util.TimeUtil.getCanonicalTimezone(TimeUtil.java:132)\r\n\tat com.mysql.cj.protocol.a.NativeProtocol.configureTimezone(NativeProtocol.java:2121)\r\n\tat com.mysql.cj.protocol.a.NativeProtocol.initServerSession(NativeProtocol.java:2145)\r\n\tat com.mysql.cj.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:1310)\r\n\tat com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:869)\r\n\t... 88 more\r\n",
  "path": "/test/findAll"
}

出现问题的原因

spring.datasource.url连接时设置出错。

解决方法

在数据库后方加入如下代码。

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/cmsjd1911?serverTimezone=UTC&useUnicode=true&zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=utf-8

解决结果

问题已解决。数据正常显示。