Idea編譯報錯：SLF4J: Class path contains multiple SLF4J bindings.

1.問題描述

idea編譯java報錯：

log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/E:/Tools/apache-maven-3.3.9/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:/E:/Tools/apache-maven-3.3.9/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]

2.原因：

兩個StaticLoggerBinder.class重複，所以刪除一個即可

 

3.解決：

刪除了：E:/Tools/apache-maven-3.3.9/Repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar，即可解決問題