引入jar包

springboot默认是用logback日志框架的,所以须要排除logback,不然会呈现jar依赖抵触的谬误。

<dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter</artifactId>    <!-- 去掉springboot默认配置 -->     <exclusions>        <exclusion>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-logging</artifactId>        </exclusion>    </exclusions></dependency><!-- 引入log4j2依赖 -->  <dependency>     <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-log4j2</artifactId>  </dependency>