The driver is automatically registered via the SPI and manual loading of the driver class is general

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.
 

修改application.yaml配置文件

driver-class-name: com.mysql.cj.jdbc.Driver 
url数据库名后添加此后缀: ?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC