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.

数据库驱动com.mysql.jdbc.Driver已经被弃用了、应当使用新的驱动com.mysql.cj.jdbc.Driver
更改jdbc.properties配置com.mysql.jdbc.Driver 改为 com.mysql.cj.jdbc.Driver