maven(mvc)连接MySQL报错[Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The se]

原因分析（MySQL8.0以后出现的问题）

Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: 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.

原因：com.mysql.cj网站.exceptions.InvalidConnectionAttributeException：服务器时区值’�й���׼ʱ��’。如果要利用时区支持，则必须配置服务器或JDBC驱动程序（通过serverTimezone配置属性）以使用更具体的时区值。

解决方法

将原来的配置

<property name="url" value="jdbc:mysql://localhost:3306/spring"/>

改为(加上时区)

<property name="url" value="jdbc:mysql://localhost:3306/spring?serverTimezone=GMT%2B8"/>