一个诡异问题终于得已解决

最近在学着在 struts 中使用 spring ,但是在发布到服务器上时总是有如表一的错误。
所有的配置文件都是正确的，在网上就根本就没有什么解决办法。
下载一个例子能发布成功，配置文件基本一致，我仔细比较了两个文件发现差别就是发布到服务器上的war文件是否在/WEB-INF/lib文件夹下包含了struts 的所有类库，我当时觉得问题就是出在这里。

把所有的依赖类库复制到jboss server 的lib 目录下，更改设置使得发布时不包含类库只发布代码。经过这样的更改问题解决。

后记：现在想一想出现ClassCastException 难道是由于类库跟 server上的类库版本不一致导致不能类型强制转换？

表一

16 : 59 : 47 , 202 ERROR [[ / myUsers]] action: null

java.lang.ClassCastException: org.springframework.web.struts.ContextLoaderPlugIn

at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java: 816 )

at org.apache.struts.action.ActionServlet.init(ActionServlet.java: 332 )

at javax.servlet.GenericServlet.init(GenericServlet.java: 211 )

at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java: 1105 )

at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java: 932 )

at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java: 3917 )

at org.apache.catalina.core.StandardContext.start(StandardContext.java: 4201 )

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java: 759 )

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java: 739 )

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java: 524 )

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: 585 )

at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java: 503 )

at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java: 164 )

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java: 659 )

at org.apache.catalina.core.StandardContext.init(StandardContext.java: 5116 )

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: 585 )

at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java: 503 )

at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java: 164 )

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java: 659 )

at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeployInternal(TomcatDeployer.java: 297 )

at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeploy(TomcatDeployer.java: 103 )

at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java: 371 )

at org.jboss.web.WebModule.startModule(WebModule.java: 83 )

at org.jboss.web.WebModule.startService(WebModule.java: 61 )

at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java: 289 )

at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java: 245 )

at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25 )

at java.lang.reflect.Method.invoke(Method.java: 585 )

at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java: 155 )

at org.jboss.mx.server.Invocation.dispatch(Invocation.java: 94 )

at org.jboss.mx.server.Invocation.invoke(Invocation.java: 86 )

at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java: 264 )

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java: 659 )

at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java: 978 )

at $Proxy0.start(Unknown Source)

at org.jboss.system.ServiceController.start(ServiceController.java: 417 )

at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25 )

at java.lang.reflect.Method.invoke(Method.java: 585 )

at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java: 155 )

at org.jboss.mx.server.Invocation.dispatch(Invocation.java: 94 )

at org.jboss.mx.server.Invocation.invoke(Invocation.java: 86 )

at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java: 264 )

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java: 659 )

at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java: 210 )

at $Proxy41.start(Unknown Source)

at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java: 466 )

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: 585 )

at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java: 155 )

at org.jboss.mx.server.Invocation.dispatch(Invocation.java: 94 )

at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java: 133 )

at org.jboss.mx.server.Invocation.invoke(Invocation.java: 88 )

at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java: 142 )

at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java: 97 )

at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java: 238 )

at org.jboss.ws.server.WebServiceDeployer.start(WebServiceDeployer.java: 117 )

at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java: 188 )

at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java: 95 )

at org.jboss.mx.server.Invocation.invoke(Invocation.java: 88 )

at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java: 264 )

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java: 659 )

at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java: 210 )

at $Proxy42.start(Unknown Source)

at org.jboss.deployment.MainDeployer.start(MainDeployer.java: 1007 )

at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java: 808 )

at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java: 771 )

at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)