報錯如下

Caused?by:?java.lang.NoClassDefFoundError:?Lorg/slf4j/Logger;at?java.lang.Class.getDeclaredFields0(Native?Method)at?java.lang.Class.privateGetDeclaredFields(Class.java:2291)at?java.lang.Class.getDeclaredFields(Class.java:1743)at?org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)at?org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:263)at?org.apache.catalina.startup.WebAnnotationSet.loadApplicationFilterAnnotations(WebAnnotationSet.java:112)at?org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:66)at?org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:405)at?org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:881)at?org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)at?org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)at?org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)at?org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)at?org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)...?10?more

If you are using Log4j the minimum jar files needed is:

• slf4j-api-1.4.3.jar

• slf4j-log4j12-1.4.3.jar

• log4j-1.2.8.jar

下載上面全部，注意版本，注意

slf4j-log4j12-1.4.3.jar

和其他2個的關系

轉載于:https://my.oschina.net/liangzhenghui/blog/260961

總結

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