数据库连接配置：

Loading class com.mysql.jdbc.Driver'. This is deprecated. The new driver class is com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.

解决办法：
将driverClass配置为：com.mysql.cj.jdbc.Driver。

Class.forName("com.mysql.cj.jdbc.Driver");

时区问题

Exception in thread "main" 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.

解决办法：
需要在Url后面添加一个参数：

?serverTimezone=UTC