在application.properties下做出如下配置:
spring.datasource.url=jdbc:mysql://localhost:3306/表的名字?&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
spring.datasource.username= root //用户名
spring.datasource.password= root //密码
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver