Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdb

spring里配置了mysql，启动时报一下错误：

 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.

大概意思就是说：引用了弃用的mysql 驱动配置，新的配置是 ****，所以只需要将旧的配置替换成新的就可以了。