如果把项目移除，服务器正常启动，一加入这个项目就启动不了啊！

八月 14, 2016 4:00:56 下午 org.apache.catalina.core.ContainerBase startInternal

严重: A child container failed during start

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Struts_test]]

at java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.util.concurrent.FutureTask.get(FutureTask.java:188)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1120)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1572)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1562)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:724)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Struts_test]]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)

... 6 more

Caused by: java.lang.NoClassDefFoundError: Lorg/apache/logging/log4j/Logger;

at java.lang.Class.getDeclaredFields0(Native Method)

at java.lang.Class.privateGetDeclaredFields(Class.java:2387)

at java.lang.Class.getDeclaredFields(Class.java:1796)

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.loadApplicationFilterAnnotations(WebAnnotationSet.java:109)

at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:64)

at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:415)

at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:892)

at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:386)

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:5472)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

... 6 more

Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.Logger

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1858)

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701)

... 20 more

八月 14, 2016 4:00:56 下午 org.apache.catalina.core.ContainerBase startInternal

严重: A child container failed during start

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]

at java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.util.concurrent.FutureTask.get(FutureTask.java:188)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1120)

at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

at org.apache.catalina.core.StandardService.startInternal(StandardService.java:444)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:738)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

at org.apache.catalina.startup.Catalina.start(Catalina.java:693)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1572)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1562)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:724)

Caused by: org.apache.catalina.LifecycleException: A child container failed during start

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1128)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

... 6 more

八月 14, 2016 4:00:56 下午 org.apache.catalina.startup.Catalina start

严重: The required Server component failed to start so Tomcat is unable to start.

org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)

at org.apache.catalina.startup.Catalina.start(Catalina.java:693)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:738)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

... 7 more

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)

at org.apache.catalina.core.StandardService.startInternal(StandardService.java:444)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

... 9 more

Caused by: org.apache.catalina.LifecycleException: A child container failed during start

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1128)

at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

... 11 more