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.
这个错误是因为mysql配置的依赖包是版本的高导致的；
找到pom.xml更改mysql依赖包的版本。
以下是改过后的的版本；
在application.yml中检查url是否正确？
url: jdbc:mysql://localhost:3306/xxx?useUnicode=true&characterEncoding=UTF-8
