异常：com.mysql.cj.core.exceptions.InvalidConnectionAttributeException

提示：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.

大致原因：jdbc的时区有问题

解决方法：url改为 ：jdbc:mysql:///unicom?serverTimezone=UTC