Loading class `com.mysql.jdbc.Driver`. This is deprecated.

Driver包名变动

报错信息：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：把配置文件中的com.mysql.jdbc.Driver 改成com.mysql.cj.jdbc.Driver