jmeter连接数据库The driver has not received any packets from the server

在用jemter连接数据库时报Cannot create PoolableConnectionFactory (Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.)。翻阅各种资料，终于解决了。

解决办法：将图中数据库URL改为jdbc:mysql://127.0.0.1（或者localhost）:3306/test即可
因为root权限的数据库只能通过localhost访问，当然你也可以在虚拟机中用docker启动mysql，这样就可以用ip地址去访问啦，注意要把JDBC的jar包放到jmeter目录下的lib/ext里面。

这样就完美解决啦

萌新第一次发博客，希望能帮助到大家，一起学习成长！！！