1：Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configurat
此问题为时区问题,在 JDBC 的连接 url 部分加上 serverTimezone=UTC 即可。
如图：
2：Cause: java.lang.ClassNotFoundException: Cannot find class: com.mysql.cj.jdbc.Driver，，
mysql-connection jar包更新为8.0或者更高版本