链接mysql报错，哪位大神懂啊

哪位大神帮忙看看啊

报错截图

无法连接数据库，具体原因：" Communications link failure
The last packet successfully received from the server was 3 milliseconds ago . The last packet sent successfully to the server was 2 milliseconds ago ."
确定

检查下有没有开启mysql服务
参考https://club.yonghongtech.com/thread-10238-1-1.html