恼火（EMPTY_ORDERED_ITERATOR异常）

今天调试了下小程序，结果一直报这个错

堆栈打印如下：

javax.faces.FacesException: EMPTY_ORDERED_ITERATOR
	at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:411)
	at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:280)
	at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:110)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
	at java.lang.Thread.run(Thread.java:619)
Caused by: javax.servlet.ServletException: EMPTY_ORDERED_ITERATOR
	at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
	at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
	at org.apache.jsp.browse_jsp._jspService(browse_jsp.java:95)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
	at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:405)
	... 27 more
javax.servlet.ServletException: EMPTY_ORDERED_ITERATOR
	at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
	at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
	at org.apache.jsp.browse_jsp._jspService(browse_jsp.java:95)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
	at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:405)
	at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:280)
	at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:110)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
	at java.lang.Thread.run(Thread.java:619)
java.lang.NoSuchFieldError: EMPTY_ORDERED_ITERATOR
	at org.apache.commons.collections.map.AbstractLinkedMap.createValuesIterator(AbstractLinkedMap.java:482)
	at org.apache.commons.collections.map.AbstractHashedMap$Values.iterator(AbstractHashedMap.java:958)
	at java.util.AbstractCollection.toArray(AbstractCollection.java:120)
	at java.util.ArrayList.<init>(ArrayList.java:131)
	at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:399)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:298)
	at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:139)
	at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:252)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:190)
	at org.springframework.web.context.ContextLoaderServlet.init(ContextLoaderServlet.java:83)
	at javax.servlet.GenericServlet.init(GenericServlet.java:211)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1029)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:862)
	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4013)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4357)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
	at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:277)
	at org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
	at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:701)
	at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432)
	at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
	at org.apache.catalina.core.StandardService.start(StandardService.java:480)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
	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:287)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)

网上有的说是

但改这边根本就不存在jar包冲突问题。

于是改了下，JDK版本（之前用的是tomcat5.0.28要jdk1.6，把jdk1.6改成1.5）

结果就不报错啦