如何解決log4j-slf4j-impl cannot be present with log4j-to-slf4j報錯

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構建一個項目的時候，啟動時候爆了下面的錯誤：

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.<clinit>(SpringApplication.java:196)
	... 1 more

因為項目  spring boot 默認 使用 logback ，但是我這里 指定了  log4j2

<!-- 引入log4j2依賴 --><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-log4j2</artifactId></dependency>

解決辦法

只需要 對因此的 spring boot starter  對應依賴排除對應的 log 依賴即可

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>



 <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
            <exclusions><!-- 去掉springboot默認配置 -->
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>


 <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions><!-- 去掉springboot默認配置 -->
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

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