Maven依赖冲突解决

系统运行正常，pom.xm增加一个公司内部依赖jar，报错。

【日志】

java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.apache.logging.slf4j.Log4jLoggerFactory loaded from file:/D:/Data/software/mavenSetting/repository/org/apache/logging/log4j/log4j-slf4j-impl/2.7/log4j-slf4j-impl-2.7.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.apache.logging.slf4j.Log4jLoggerFactory

【分析】

参考：

https://www.jianshu.com/p/fb652af5349c

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

比较增加依赖包前后日志：

===============增加前==================
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in 
[jar:file:/D:/Data/software/mavenSetting/repository/
org/apache/logging/log4j/log4j-slf4j-impl/2.7/
log4j-slf4j-impl-2.7.jar!
/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in 
[jar:file:/D:/Data/software/mavenSetting/repository/
org/slf4j/slf4j-log4j12/1.7.25/
slf4j-log4j12-1.7.25.jar!
/org/slf4j/impl/StaticLoggerBinder.class]

===============增加后===================
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in 
[jar:file:/D:/Data/software/mavenSetting/repository/
org/apache/logging/log4j/log4j-slf4j-impl/2.7/
log4j-slf4j-impl-2.7.jar!
/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in 
[jar:file:/D:/Data/software/mavenSetting/repository/
ch/qos/logback/logback-classic/1.1.11/
logback-classic-1.1.11.jar!
/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in 
[jar:file:/D:/Data/software/mavenSetting/repository/
org/slf4j/slf4j-log4j12/1.7.25/
slf4j-log4j12-1.7.25.jar!
/org/slf4j/impl/StaticLoggerBinder.class]

【解决】

查看项目jar包对应依赖树

mvn dependency:tree

查找logback-classic-1.1.11.jar为新依赖引进的包，则再新依赖中去掉该包

        
            com.domain.user
            user-center-client
            1.8-SNAPSHOT
            
                
                    ch.qos.logback
                    logback-classic
                
            
        

问题解决！