Caused by: java.lang.NoClassDefFoundError: Lorg/slf4j/Logger;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2317)
at java.lang.Class.getDeclaredFields(Class.java:1762)
at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)
at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:270)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationListenerAnnotations(WebAnnotationSet.java:89)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:63)
at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:417)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:891)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:388)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5519)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
... 40 more
Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
... 54 more
对应的logger jar包有没有导入。
Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger
看看你的slf4j.jar导入没有
如果是maven的话你可能添加了这个依赖但是下载失败需要重新下载一次
少包，slf4j.jar有依赖包 log4j.jar,还有,slf4j-log4j.jar,slf4j-api.jar