The driver is automatically registered via the SPI and manual loading of the[SpringBoot]

問題描述：
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.
原因：
升級後的mysql驅動類，Driver位置由com.mysql.jdbc.Driver 變爲com.mysql.cj.jdbc.Driver
解決方式：
將數據配置文件裏spring.datasource.driver-class-name=com.mysql.jdbc.Driver修改爲如下
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver