springboot链接mysql出错_springboot2.3.7连接mysql错误？

问题描述

springboot 2.3.7

mysql-connector-java 8.0.22

mysql 8.0.3

openjdk 14.0.1 (尝试过 jdk 1.8)

在使用 springboot 2.2.2 版本时，没有任何问题，切换到 2.3.7版本报如下错误：02:54:54.036 logback [http-nio-8090-exec-1] DEBUG com.zaxxer.hikari.pool.PoolBase - HikariPool-1 - Failed to create/setup connection: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

02:54:54.038 logback [http-nio-8090-exec-1] DEBUG com.zaxxer.hikari.pool.HikariPool - HikariPool-1 - Cannot acquire connection from data source

com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)

at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)

at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)

at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:456)

at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)

at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)

at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)

at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358)

at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206)

at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477)

at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560)

at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:115)

at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)

at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158)

at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116)

at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)

at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80)

at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67)

at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:337)

at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:86)

at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62)

at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325)

at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)

at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)

at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:89)

at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147)

at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)

at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:76)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:564)

at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:427)

at com.sun.proxy.$Proxy80.selectOne(Unknown Source)

at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)

at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:87)

at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:152)

at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:85)

at com.sun.proxy.$Proxy85.getUserByPassword(Unknown Source)

at cn.zj.service.controller.LoginController.login(LoginController.java:106)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:564)

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)

at org.springframework.web.servlet.mvc.method.annota