报错如下：
java.sql.SQLException: 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.
解决：
mysql连接地址加个配置： &serverTimezone=UTC
1 #application.properties 配置文件 2 3 #原配置 4 jdbc.url=jdbc:mysql://127.0.0.1:3306/oasys?useUnicode=true&characterEncoding=utf-8&useSSL=false 5 6 7 #新配置（增加 &serverTimezone=UTC） 8 jdbc.url=jdbc:mysql://127.0.0.1:3306/oasys?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC
参考：
https://www.cnblogs.com/EasonJim/p/6906713.html
java.sql.SQLException: 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.