java.lang.reflect.InvocationTargetException
最近项目用到WAS8.0，碰到一技术问题，花费了我不短的时间去解决，这里记录下，具体思路问题，应用环境如下：
本地开发环境：
WinXp sp2\Eclipse3.5\Jetty\Jboss5\Maven2.2
开发语言及相关中间件：
Java EE 6\Seam2.2\JSF1.2\EJB3.0\DB2
服务器环境
AIX6.1\WAS8.0\JDK6\DB29.7
由于服务器是分前端、后端；
异常现象：描述本地测试，始终没有问题，而移到正式环境下面测试始终没有通过，
异常代码如下：
javax.ejb.EJBException: The hk.com.mtr.trs.service.report.impl.TrainMaintenanceReportServiceImpl EJB reference in the hk.com.mtr.trs.facade.report.TrainMaintenanceReportFacade component in the trsEJB.jar module of the TRS application could not be resolved; nested exception is: java.lang.reflect.InvocationTargetException Caused by: java.lang.reflect.InvocationTargetException at com.ibm.ejs.container.EJSContainer.startBean(EJSContainer.java:1797) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime.startBean(AbstractEJBRuntime.java:2580) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime.initializeDeferredEJBImpl(AbstractEJBRuntime.java:2447) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime.access$300(AbstractEJBRuntime.java:209) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime$1$1.run(AbstractEJBRuntime.java:2333) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime$1$1.run(AbstractEJBRuntime.java:2327) at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:5367) at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:5493) at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime$1.run(AbstractEJBRuntime.java:2326) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime$1.run(AbstractEJBRuntime.java:2300) at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:63) at com.ibm.ws.ejbcontainer.runtime.AbstractEJBRuntime.initializeDeferredEJB(AbstractEJBRuntime.java:2299) at com.ibm.ejs.container.HomeRecord.getHomeAndInitialize(HomeRecord.java:404) at com.ibm.ejs.container.HomeOfHomes.getHome(HomeOfHomes.java:410) at com.ibm.ejs.container.HomeOfHomes.getHomeByInterface(HomeOfHomes.java:906) at com.ibm.ws.ejbcontainer.injection.factory.EJBLinkObjectFactory.getObjectInstance(EJBLinkObjectFactory.java:261) at com.ibm.ws.ejbcontainer.injection.factory.EJBLinkObjectFactory.getObjectInstance(EJBLinkObjectFactory.java:167) at com.ibm.ws.injectionengine.processor.EJBInjectionBinding.getInjectionObject(EJBInjectionBinding.java:1181) at com.ibm.wsspi.injectionengine.InjectionBinding.getInjectableObject(InjectionBinding.java:1002) at com.ibm.wsspi.injectionengine.InjectionTarget.inject(InjectionTarget.java:198) at com.ibm.ws.injectionengine.AbstractInjectionEngine.inject(AbstractInjectionEngine.java:924) at com.ibm.ejs.container.StatelessBeanO.initialize(StatelessBeanO.java:293) at com.ibm.ejs.container.BeanOFactory.create(BeanOFactory.java:147) at com.ibm.ejs.container.EJSHome.createBeanO(EJSHome.java:1229) at com.ibm.ejs.container.EJSHome.createBeanO(EJSHome.java:1347) at com.ibm.ejs.container.activator.UncachedActivationStrategy.atActivate(UncachedActivationStrategy.java:88) at com.ibm.ejs.container.activator.Activator.preInvokeActivateBean(Activator.java:614) at com.ibm.ejs.container.EJSContainer.preInvokeActivate(EJSContainer.java:4002) at com.ibm.ejs.container.EJSContainer.EjbPreInvoke(EJSContainer.java:3368) at hk.com.mtr.trs.facade.report.EJSRemote0SLhk_com_mtr_trs_facade_report_Tra_68f18871.onlineGenerateReport(EJSRemote0SLhk_com_mtr_trs_facade_report_Tra_68f18871.java) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:611) at com.ibm.rmi.util.ProxyUtil$4.run(ProxyUtil.java:609) at java.security.AccessController.doPrivileged(AccessController.java:254) at com.ibm.rmi.util.ProxyUtil.invokeWithClassLoaders(ProxyUtil.java:606) at com.ibm.CORBA.iiop.ClientDelegate.invoke(ClientDelegate.java:1177) at $Proxy106.onlineGenerateReport(Unknown Source) at hk.com.mtr.trs.facade.report._TrainMaintenanceReportFacade_Stub.onlineGenerateReport(_TrainMaintenanceReportFacade_Stub.java) at hk.com.mtr.trs.web.report.BaseReportRequestController.onlineGenReport(BaseReportRequestController.java:314) at hk.com.mtr.trs.web.report.TrainMaintenanceReportController.toGenReport(TrainMaintenanceReportController.java:127) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:611) at org.jboss.seam.util.Reflections.invoke(Reflections.java:22) at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56) at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.SynchronizationInterceptor.aroundInvoke(SynchronizationInterceptor.java:32) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107) at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185) at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103) at hk.com.mtr.trs.web.report.TrainMaintenanceReportController_$$_javassist_seam_7.toGenReport(TrainMaintenanceReportController_$$_javassist_seam_7.java) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:611) at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335) at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:348) at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58) at org.jboss.el.parser.AstValue.invoke(AstValue.java:96) at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276) at org.jboss.seam.el.OptionalParameterMethodExpression.invoke(OptionalParameterMethodExpression.java:39) at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68) at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:99) at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88) at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:770) at javax.faces.component.UICommand.broadcast(UICommand.java:372) at org.ajax4jsf.component.AjaxActionComponent.broadcast(AjaxActionComponent.java:55) at hk.com.mtr.trs.web.jsf.TrsViewRoot.processEvents(Unknown Source) at org.ajax4jsf.component.AjaxViewRoot.broadcastEventsForPhase(AjaxViewRoot.java:304) at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:261) at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:474) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1147) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:722) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:449) at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178) at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:125) at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:92) at hk.com.mtr.trs.jaas.sso.TrsNtlmHttpFilter.doFilter(Unknown Source) at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:192) at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:89) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at hk.com.mtr.trs.web.jsf.TrsFilter.doFilter(Unknown Source) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:42) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:192) at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:89) at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:919) at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1016) at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:883) at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1659) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305) at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83) at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1784) at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165) at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217) at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161) at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138) at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204) at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775) at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1648) Caused by: java.lang.NoClassDefFoundError: org.apache.activemq.util.ByteArrayInputStream at java.lang.J9VMInternals.verifyImpl(Native Method) at java.lang.J9VMInternals.verify(J9VMInternals.java:77) at java.lang.J9VMInternals.initialize(J9VMInternals.java:139) at java.lang.J9VMInternals.newInstanceImpl(Native Method) at java.lang.Class.newInstance(Class.java:1345) at com.ibm.ejs.container.EJSContainer.startBean(EJSContainer.java:1793) ... 139 more Caused by: java.lang.ClassNotFoundException: org.apache.activemq.util.ByteArrayInputStream at java.net.URLClassLoader.findClass(URLClassLoader.java:434) at com.ibm.ws.bootstrap.ExtClassLoader.findClass(ExtClassLoader.java:198) at java.lang.ClassLoader.loadClass(ClassLoader.java:646) at com.ibm.ws.bootstrap.ExtClassLoader.loadClass(ExtClassLoader.java:113) at java.lang.ClassLoader.loadClass(ClassLoader.java:612) at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:62) at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:58) at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:564) at java.lang.ClassLoader.loadClass(ClassLoader.java:612) ... 145 more
加上又在具体开发的同事误导下，说始终没有改过什么东西，也是按照推测去理解InvocationTargetException异常现象，始终没有找到问题症结点，同时也在对比版本控制文件，也没有发现最近的文档有什么大的差异。一直落入陷阱.....
解决方案：
ClassNotFoundException,从这里入手，WAS服务器不存在这种jar包，而本地又有，后来注意到我们本地是
同JVM，是一个Maven环境，里面的提供了大量的jar包，并且有伺服支持，有大量jar支持，开发人员不小心，提供另一个apache的开源jar包，干扰到了ByteArrayInputStream 的引入，从而出现本地测试始终通过，移到服务器上面而出现异常，找不到jar包，或者是因为提供的jar包同WAS本身自带的jar有冲突。
至此问题解决，还是轻易相信了开发人员的着入点，误入思维方向，版本控制存在多次提交问题，不仅仅以最近的一两次作为比较对象，应该直接从引发异常的地方发散思维。
开发人员应该注意的是，引入的jar下面的类需要绝对的认可，不可任意增加自己认为正确的jar包。
这里权当工作记录，以资共勉，吃一堑长一智.......
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