Springboot中使用log4j2需要移除默认的logback，pom文件如下：
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><exclusions><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion><exclusion><artifactId>logback-classic</artifactId><groupId>ch.qos.logback</groupId></exclusion></exclusions></dependency>
项目添加log4j2后，发现配置文件不生效，检查maven依赖，还有logback相关包存在，尝试从全局去除logback，解决
<dependency><groupId>org.springframework.boot</groupId><artifactId>logback-classic</artifactId><exclusions><exclusion><groupId>*</groupId><artifactId>*</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId><exclusions><exclusion><groupId>*</groupId><artifactId>*</artifactId></exclusion></exclusions></dependency>
