2019-01-19 18:53:34严重:18:53:34 Druid-ConnectionPool-Create-1575635644 ERROR create connection error, url: jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=true, errorCode 0, state 08S012019-01-19 18:53:44警告:18:53:44 pool-28-thread-1 WARN 错误代码:31300012 创建数据连接失败: Communications link failureLast packet sent to the server was 4 ms ago.2019-01-19 18:53:44严重:18:53:44 SwingWorker-pool-12-thread-3 ERROR com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureLast packet sent to the server was 4 ms ago.
