如何解决log4j-slf4j-impl cannot be present with log4j-to-slf4j报错

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构建一个项目的时候，启动时候爆了下面的错误：

SLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [jar:file:/D:/buildSoft/java/maven/jar-center/org/apache/logging/log4j/log4j-slf4j-impl/2.12.1/log4j-slf4j-impl-2.12.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: Found binding in [jar:file:/D:/buildSoft/java/maven/jar-center/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]Exception in thread "main" java.lang.ExceptionInInitializerError        at com.xt.gateway.GatewayApplication.main(GatewayApplication.java:22)Caused by: org.apache.logging.log4j.LoggingException: log4j-slf4j-impl cannot be present with log4j-to-slf4j        at org.apache.logging.slf4j.Log4jLoggerFactory.validateContext(Log4jLoggerFactory.java:49)        at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:39)        at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:30)        at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:54)        at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:30)        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:363)        at org.apache.commons.logging.LogAdapter$Slf4jAdapter.createLocationAwareLog(LogAdapter.java:130)        at org.apache.commons.logging.LogAdapter.createLog(LogAdapter.java:91)        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:67)        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:59)        at org.springframework.boot.SpringApplication.(SpringApplication.java:196)        ... 1 more

因为项目 spring boot 默认 使用 logback ，但是我这里 指定了 log4j2

    org.springframework.boot    spring-boot-starter-log4j2

解决办法

只需要 对因此的 spring boot starter 对应依赖排除对应的 log 依赖即可

            org.springframework.boot            spring-boot-starter-actuator                                                org.springframework.boot                    spring-boot-starter-logging                                                 org.springframework.cloud            spring-cloud-starter-gateway                                                org.springframework.boot                    spring-boot-starter-logging                                                 org.springframework.boot            spring-boot-starter-web                                                org.springframework.boot                    spring-boot-starter-logging                                    

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