===2018-07-03 09:53:41.188 ERROR com.alibaba.druid.pool.DruidDataSource Line:872 - init datasource error, url: jdbc:mysql://127.0.0.1:3306/guns?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false
java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
Caused by: com.mysql.cj.core.exceptions.UnableToConnectException: CLIENT_PLUGIN_AUTH is required
你好,我用guns 3.0在IDEA就正常的,导入guns 4.0到IDEA里,更新完jar后启动,报这个错