连接不上mysql

连接本地mysql 报错


无法连接数据源：/未命名-0，具体原因：Communications link failureThe last packet successfully received from the server was 1 milliseconds ago.  The last packet sent successfully to the server was 1 milliseconds ago.。Received fatal alert: protocol_version

用自定义驱动会报错
无法连接数据源：/未命名-0，具体原因：The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.。

https://blog.csdn.net/qq_41570658/article/details/107973884 请参考