com.alibaba.druid.pool.DruidDataSource error 严重: create connection error, url: jdbc:mysql://localho
问题描述：com.alibaba.druid.pool.DruidDataSource error 严重: create connection error, url: jdbc:mysql://localhost:3306/project_crowd, errorCode 0, state S1000 java.sql.SQLException: Unknown character set index for field ‘224’ received from server.问题解决：查了网上很
