解决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问题

错误提示:
Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: The server time zone value ‘?й???????‘ 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.
 
 
解决办法;
 
在连接字符串后面加上?serverTimezone=UTC

其中UTC是统一标准世界时间。

完整的连接字符串示例：jdbc:mysql://localhost:3306/test?serverTimezone=UTC

或者还有另一种选择：jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8，这个是解决中文乱码输入问题，当然也可以和上面的一起结合：jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC

原文：https://www.cnblogs.com/SpaceKiller/p/12297677.html