异常：
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'.
整合spring boot项目过程中出现的，用了最新的mysql 连接驱动
application-dev.properties
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8 spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.jdbc.Driver
需要将 com.mysql.jdbc.Driver 改为 com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8 spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver