if you have this error :
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.all what you should do is to change application.properties
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
to
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
I hope it help