正文
Java连接数据库报错：com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
小程序：扫一扫查出行【扫一扫了解最新限行尾号】
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解决方案
连接Mysql报错
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
检查mysql服务是否开启
