Server Tomcat v7.0 Server at localhost failed to start 错误解决

来源：互联网发布：plc编程小游戏编辑：程序博客网时间：2024/05/18 03:16

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[/km-lg]]
   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:1123)
   at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:816)
   at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
   at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
   at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
   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:745)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/km-lg]]
   at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
   ... 6 more
Caused by: java.lang.NoClassDefFoundError: Lorg/apache/log4j/Logger;
   at java.lang.Class.getDeclaredFields0(Native Method)
   at java.lang.Class.privateGetDeclaredFields(Class.java:2436)
   at java.lang.Class.getDeclaredFields(Class.java:1806)
   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.loadApplicationServletAnnotations(WebAnnotationSet.java:139)
   at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:65)
   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:5412)
   at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
   ... 6 more
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger
   at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
   at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)

... 20 more

今天遇到这个问题，在网上查了一堆解决办法，都试过了不行，有的说是web.xml配置的问题，有的说tomcat的端口被占用，还有的说删tomcat里的缓存，都没有解决掉这问题，仔细想想，我项目每天都要在本地跑，就今天出问题，代码也没改过，检查了下项目想的maven，发现web deployment assembly里没把maven的jar打包进来。。。，加入后启动就正常了。

0 0