SpringCloud項目里slf4j依賴沖突問題解決

項目啟動的時候會報SLF4J: Class path contains multiple SLF4J bindings.

SLF4J: Found binding in [jar:file:.../ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:.../org/apache/logging/log4j/log4j-slf4j-impl/1.7.25/log4j-slf4j-impl-2.11.2.jar!/org/slf4j

/impl/StaticLoggerBinder.class]

網上搜了下，都是如下這種：

1、“SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/D:/maven-3.3.3/m2/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/D:/maven-3.3.3/m2/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar!/org

/slf4j/impl/StaticLoggerBinder.class]”

2、“

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/G:/repo/repo-mvn-qingmu/ch/qos/logback/logback-classic
/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/G:/repo/repo-mvn-qingmu/org/slf4j/slf4j-log4j12/1.7.30
/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]”

大致可以看到都是

slf4j-log4j12-xxx.jar這種多出來的依賴，而我這個是log4j-slf4j-impl-2.11.2.jar，還是不一樣的，因為我要用logback，
所以要解決的肯定時log4j-slf4j-impl-2.11.2.jar依賴。

解決過程：
排查每個Module的依賴，idea里有工具可以看的，然后找到log4j-slf4j-impl-2.11.2.jar，看誰依賴了它，然后在其下加入：

<exclusions>
            <exclusion>
                <groupId>org.apache.log4j</groupId>
                <artifactId>log4j-slf4j-impl</artifactId>
            </exclusion>
        </exclusions>