问题：

Error querying database.  Cause: java.sql.SQLException: The server time zone value

解决：

mysql8.0要添加时区

serverTimezone=Asia/Shanghai

<property name="url" value="jdbc:mysql://localhost:3306/mybatis?useSSL=true&amp;useUnicode=true&amp;characterEncoding=UTF8&amp;serverTimezone=Asia/Shanghai" />