SpringBoot启动报错：LoggerFactory is not a Logback LoggerContext but Logback is on the classpath

这个问题是slf4j包冲突所产生的问题，本博调试过程借鉴了下面链接所述博客，但情况与其不尽相同，博客将通过两种方式进行包的排除。

https://juejin.im/entry/5b6927906fb9a04fb900f611

一、日志信息及错误

1、完整日志

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/C:/Users/zhanggong004/.m2/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/C:/Users/zhanggong004/.m2/repository/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.slf4j.impl.Log4jLoggerFactory]
Exception in thread "main" java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.Log4jLoggerFactory loaded from file:/C:/Users/zhanggong004/.m2/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.impl.Log4jLoggerFactory
	at org.springframework.util.Assert.instanceCheckFailed(Assert.java:655)
	at org.springframework.util.Assert.isInstanceOf(Assert.java:555)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:286)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:102)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationStartingEvent(LoggingApplicationListener.java:220)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:199)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
	at org.springframework.boot.context.event.EventPublishingRunListener.starting(EventPublishingRunListener.java:69)
	at org.springframework.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:48)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:302)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
	at com.example.dubboconsumer.DubboConsumerApplication.main(DubboConsumerApplication.java:13)

2、可以通过日志信息发现，两个jar包中的方法产生了冲突。

C:/Users/zhanggong004/.m2/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]

C:/Users/zhanggong004/.m2/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class

当前使用的是org里的包，正常的日志打印需要的是logback的包

二、编辑pom.xml文件进行包的调整

1、根据一中的报错情况，我们在项目对应的pom.xml中增加了包，包的版本以实际情况设置

>
   >ch.qos.logback>
   >logback-classic>
   >1.2.3>
>

2、同时，在原有的包后注明不再使用slf4j-log4j12方法。

>
   >org.springframework.boot>
   >spring-boot-starter-web>
>

>
    >com.101tec>
    >zkclient>
    >0.10>
    >
        >
            >slf4j-log4j12>
            >org.slf4j>
        >
    >
>

  分别改为

>
     >org.springframework.boot>
     >spring-boot-starter-web>
     >
          >
               >org.slf4j>
               >slf4j-log4j12>
          >
     >
>

>
    >com.101tec>
    >zkclient>
    >0.10>
    >
        >
            >slf4j-log4j12>
        >
    >
>