外接数据库MYSQL8.20报错

外接数据库mysql8.20，报错如下：

com.mysql.cj.jdbc.exceptions.CommunicationsException: 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.

完全按照文档操作，求解决办法

换一个 高版本 比如 8.0.25 的jar包版本试一下