一、添加druid依赖
访问maven仓库复制依赖坐标
https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.2.8</version>
</dependency>
粘到pom.xml中刷新配置