Caused by: java.sql.SQLException Unable to load authentication plugin caching_sha2_password

前言

本地启动seata时，我链接的是本地mysql数据库，报了如下的错误：通过错误不难发现问题的原因，

Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Unable to load authentication plugin 'caching_sha2_password'.)
        at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1549)
        at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1388)
        at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
        at io.seata.core.store.db.LogStoreDataBaseDAO.queryGlobalTransactionDO(LogStoreDataBaseDAO.java:208)
        ... 14 common frames omitted
Caused by: java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'.
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:925)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:922)
        at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1769)
        at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1288)
        at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2506)
        at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2539)
        at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2321)
        at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:832)
        at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
        at sun.reflect.GeneratedConstructorAccessor10.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:417)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:344)
        at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
        at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582)
        at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1556)
        at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545)
        ... 17 common frames omitted

解决办法

首先登陆我本地mysql，查看其版本号

然后查看seata依赖lib包：

然后修改依赖包的版本号：

总结：

主要原因8.x版本的验证模块和之前版本不同：

5.x版本是：default_authentication_plugin=mysql_native_password

8.x版本就是：default_authentication_plugin=caching_sha2_password