严重: Exception starting filter struts2 java.lang.reflect.InvocationTargetException - Class: com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector File: ContainerImpl.java Method: inject Line: 295 - com/opensymphony/xwork2/inject/ContainerImpl.java:295:-1 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:428) at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:593) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:295) at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:431) at com.opensymphony.xwork2.inject.ContainerBuilder$5.create(ContainerBuilder.java:207) at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51) at com.opensymphony.xwork2.inject.ContainerBuilder$3.create(ContainerBuilder.java:93) at com.opensymphony.xwork2.inject.ContainerBuilder$7.call(ContainerBuilder.java:487) at com.opensymphony.xwork2.inject.ContainerBuilder$7.call(ContainerBuilder.java:484) at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:574) at com.opensymphony.xwork2.inject.ContainerBuilder.create(ContainerBuilder.java:484) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.createBootstrapContainer(DefaultConfiguration.java:252) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:193) at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:371) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:415) ... 29 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:293) ... 42 more Caused by: java.lang.ExceptionInInitializerError at com.opensymphony.xwork2.ognl.OgnlValueStackFactory.setContainer(OgnlValueStackFactory.java:85) ... 47 more Caused by: java.lang.IllegalArgumentException: Javassist library is missing in classpath! Please add missed dependency! at ognl.OgnlRuntime.<clinit>(OgnlRuntime.java:165) ... 48 more Caused by: java.lang.ClassNotFoundException: javassist.ClassPool at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1484) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at ognl.OgnlRuntime.<clinit>(OgnlRuntime.java:162) ... 48 more 2014-2-13 23:21:35 org.apache.catalina.core.StandardContext start 严重: Error filterStart 2014-2-13 23:21:35 org.apache.catalina.core.StandardContext start 严重: Context [/HelloWorld] startup failed due to previous errors 2014-2-13 23:21:35 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap 严重: A web application created a ThreadLocal with key of type [null] (value [com.opensymphony.xwork2.inject.ContainerImpl$10@50739aa3]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@55ad6c98]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed. 2014-2-13 23:21:35 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap 严重: A web application created a ThreadLocal with key of type [null] (value [com.sun.faces.config.ConfigureListener$1@6cb49b19]) and a value of type [null] (value [null]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
解决办法是：将javassist-3.11.0.GA.jar包考到项目运行的lib下面即可。
运行Struts项目时出现java.lang.reflect.InvocationTargetException异常解决办法
原文：http://blog.csdn.net/w_basketboy24/article/details/19177793