java.util.concurrent.ExecutionException 问题解决方法
java.util.concurrent.ExecutionException错误信息，这里给出解决方案，大家根据具体要求更改。
SEVERE:Achildcontainerfailedduringstart java.util.concurrent.ExecutionException:org.apache.catalina.LifecycleException:Failedtostartcomponent[StandardEngine[Catalina].StandardHost[localhost].StandardContext[/WebApp]] atjava.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) atjava.util.concurrent.FutureTask.get(FutureTask.java:83) atorg.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123) atorg.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800) atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) atorg.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) atorg.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) atjava.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) atjava.util.concurrent.FutureTask.run(FutureTask.java:138) atjava.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) atjava.lang.Thread.run(Thread.java:619) Causedby:org.apache.catalina.LifecycleException:Failedtostartcomponent[StandardEngine[Catalina].StandardHost[localhost].StandardContext[/WebApp]] atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) ...7more Causedby:java.lang.RuntimeException:Unexpectedelementvaluekindinannotation:0 atorg.apache.tomcat.util.bcel.classfile.ElementValue.readElementValue(ElementValue.java:129) atorg.apache.tomcat.util.bcel.classfile.AnnotationEntry.read(AnnotationEntry.java:59) atorg.apache.tomcat.util.bcel.classfile.Annotations.<init>(Annotations.java:49) atorg.apache.tomcat.util.bcel.classfile.RuntimeVisibleAnnotations.<init>(RuntimeVisibleAnnotations.java:51) atorg.apache.tomcat.util.bcel.classfile.Attribute.readAttribute(Attribute.java:147) atorg.apache.tomcat.util.bcel.classfile.FieldOrMethod.<init>(FieldOrMethod.java:58) atorg.apache.tomcat.util.bcel.classfile.Method.<init>(Method.java:72) atorg.apache.tomcat.util.bcel.classfile.ClassParser.readMethods(ClassParser.java:268) atorg.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:128) atorg.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2118) atorg.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2093) atorg.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2086) atorg.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2086) atorg.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2086) atorg.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2086) atorg.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2086) atorg.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2086) atorg.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1293) atorg.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878) atorg.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376) atorg.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) atorg.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) atorg.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322) atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ...7more May26,20146:19:09PMorg.apache.catalina.core.ContainerBasestartInternal
今天运行eclipse运行tomcat启动不了，不知道啥情况，通过调查发现是因为springmvc中controller类有一个url报错了
解决问题方法：
1.web.xml出现了问题
检查<url-pattern></url-pattern>中配置的内容是否缺少“/”,"/"表示当前web应用。
@WebFilter("/*")
2.如果是springmvc检查controller类中@RequestMapping(value=是否有报错的情况
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