FilterChain抛出javax.servlet.ServletException: IteratedExpression.getItem:索引越界

Question

很抱歉没有代码示例，但我不确定我是否可以在一个简单的示例中重复这个问题。

下面的异常最近开始出现在我的RichFaces应用程序中。它是一个web前端，用于查询数据库并在简单的表中显示数据。当我的应用程序在链接到命令按钮的bean上执行完我的代码时，就会出现问题。当您单击弹出面板上的按钮时，它将调用FilterChain.doFilter，然后完成bean上的代码，然后我假设在尝试重新呈现主窗口时会抛出此异常。

当这个弹出面板的新入口点在按钮被单击时在bean上执行相同的代码时，问题就出现了，但是由于添加了这个新入口点，旧的入口点开始抛出这个异常。

我知道在没有代码的情况下，任何人都不太可能提供问题的答案，但对这些过滤器链是如何工作的了解很少，我甚至不确定从哪里开始寻找，我想知道是否有人可以为我指明一个方向，可能会导致我找到解决方案。

该服务正在WASCE 2.1上运行。

任何帮助都将不胜感激。

javax.servlet.ServletException: IteratedExpression.getItem: Index out of Bounds
at javax.faces.webapp._ErrorPageWriter.throwException(_ErrorPageWriter.java:549)
at javax.faces.webapp.FacesServlet.handleLifecycleException(FacesServlet.java:293)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:187)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at myPackage.jsfutils.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:45)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at myPacakge.jsfutils.CheckLogonFilter.doFilter(CheckLogonFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:56)
at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:406)
at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555)
at org.apache.geronimo.tomcat.valve.ThreadCleanerValve.invoke(ThreadCleanerValve.java:40)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.RuntimeException: IteratedExpression.getItem: Index out of Bounds
at javax.servlet.jsp.jstl.core.IteratedExpression.getItem(IteratedExpression.java:75)
at javax.servlet.jsp.jstl.core.IteratedValueExpression.getValue(IteratedValueExpression.java:60)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:64)
at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
at javax.faces.component.UIData.getValue(UIData.java:1081)
at org.ajax4jsf.component.UIDataAdaptor.getValue(UIDataAdaptor.java:1624)
at org.ajax4jsf.component.SequenceDataAdaptor.getDataModel(SequenceDataAdaptor.java:65)
at org.ajax4jsf.component.SequenceDataAdaptor.createDataModel(SequenceDataAdaptor.java:59)
at org.richfaces.component.UIDataTable.createDataModel(UIDataTable.java:120)
at org.ajax4jsf.component.UIDataAdaptor.getExtendedDataModel(UIDataAdaptor.java:621)
at org.ajax4jsf.component.UIDataAdaptor.getRowIndex(UIDataAdaptor.java:311)
at javax.faces.component._ComponentUtils.idsAreEqual(_ComponentUtils.java:134)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:110)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:107)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:107)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:107)
at javax.faces.component.UIComponentBase.findComponent(UIComponentBase.java:449)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:912)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:919)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:919)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:919)
at org.ajax4jsf.renderkit.RendererUtils.findComponentFor(RendererUtils.java:882)
at org.ajax4jsf.context.AjaxContextImpl.convertId(AjaxContextImpl.java:395)
at org.ajax4jsf.context.AjaxContextImpl.addRegionsFromComponent(AjaxContextImpl.java:331)
at org.ajax4jsf.component.AjaxActionComponent.setupReRender(AjaxActionComponent.java:96)
at org.ajax4jsf.component.AjaxActionComponent.broadcast(AjaxActionComponent.java:60)
at org.ajax4jsf.component.UIInclude.broadcast(UIInclude.java:170)
at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
at org.ajax4jsf.component.AjaxViewRoot.broadcastAjaxEvents(AjaxViewRoot.java:340)
at org.ajax4jsf.application.AjaxViewHandler.processAjaxEvents(AjaxViewHandler.java:216)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:169)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:182)
... 29 more
2011-12-12 16:35:48,342 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
java.lang.RuntimeException: IteratedExpression.getItem: Index out of Bounds
at javax.servlet.jsp.jstl.core.IteratedExpression.getItem(IteratedExpression.java:75)
at javax.servlet.jsp.jstl.core.IteratedValueExpression.getValue(IteratedValueExpression.java:60)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:64)
at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
at javax.faces.component.UIData.getValue(UIData.java:1081)
at org.ajax4jsf.component.UIDataAdaptor.getValue(UIDataAdaptor.java:1624)
at org.ajax4jsf.component.SequenceDataAdaptor.getDataModel(SequenceDataAdaptor.java:65)
at org.ajax4jsf.component.SequenceDataAdaptor.createDataModel(SequenceDataAdaptor.java:59)
at org.richfaces.component.UIDataTable.createDataModel(UIDataTable.java:120)
at org.ajax4jsf.component.UIDataAdaptor.getExtendedDataModel(UIDataAdaptor.java:621)
at org.ajax4jsf.component.UIDataAdaptor.getRowIndex(UIDataAdaptor.java:311)
at javax.faces.component._ComponentUtils.idsAreEqual(_ComponentUtils.java:134)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:110)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:107)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:107)
at javax.faces.component._ComponentUtils.findComponent(_ComponentUtils.java:107)
at javax.faces.component.UIComponentBase.findComponent(UIComponentBase.java:449)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:912)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:919)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:919)
at org.ajax4jsf.renderkit.RendererUtils.findUIComponentBelow(RendererUtils.java:919)
at org.ajax4jsf.renderkit.RendererUtils.findComponentFor(RendererUtils.java:882)
at org.ajax4jsf.context.AjaxContextImpl.convertId(AjaxContextImpl.java:395)
at org.ajax4jsf.context.AjaxContextImpl.addRegionsFromComponent(AjaxContextImpl.java:331)
at org.ajax4jsf.component.AjaxActionComponent.setupReRender(AjaxActionComponent.java:96)
at org.ajax4jsf.component.AjaxActionComponent.broadcast(AjaxActionComponent.java:60)
at org.ajax4jsf.component.UIInclude.broadcast(UIInclude.java:170)
at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
at org.ajax4jsf.component.AjaxViewRoot.broadcastAjaxEvents(AjaxViewRoot.java:340)
at org.ajax4jsf.application.AjaxViewHandler.processAjaxEvents(AjaxViewHandler.java:216)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:169)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:182)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at myPackage.jsfutils.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:45)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at myPackage.jsfutils.CheckLogonFilter.doFilter(CheckLogonFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:56)
at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:406)
at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555)
at org.apache.geronimo.tomcat.valve.ThreadCleanerValve.invoke(ThreadCleanerValve.java:40)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)

Answer 1

问题解决了，试图重新渲染面板中不存在的部分。奇怪的是，它是如何只发生在一个入口点上的，在jsp中作为弹出面板上确认按钮上的rerender属性，所以两个入口点都使用相同的按钮和jsp声明。添加到缺少的部分，因为它应该在那里，只能想象它被错误地或svn合并删除了。

Answer 2

看看根本原因：

java.lang.RuntimeException: IteratedExpression.getItem: Index out of Bounds
at javax.servlet.jsp.jstl.core.IteratedExpression.getItem(IteratedExpression.java:75)
at javax.servlet.jsp.jstl.core.IteratedValueExpression.getValue(IteratedValueExpression.java:60)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:64)
at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
at javax.faces.component.UIData.getValue(UIData.java:1081)
at org.ajax4jsf.component.UIDataAdaptor.getValue(UIDataAdaptor.java:1624)
at org.ajax4jsf.component.SequenceDataAdaptor.getDataModel(SequenceDataAdaptor.java:65)
at org.ajax4jsf.component.SequenceDataAdaptor.createDataModel(SequenceDataAdaptor.java:59)
at org.richfaces.component.UIDataTable.createDataModel(UIDataTable.java:120)
...

这绝对与过滤器无关。请求恰好是通过过滤器传递的。如果过滤器会导致任何问题，那么您将在堆栈跟踪的第一行中看到它。

您的具体问题很可能是由于在后续请求中没有为数据表保留正确的数据模型而引起的。显然，托管bean位于请求作用域而不是视图作用域中。要解决此问题，您需要将bean放在视图范围内，并在必要时检查您的数据模型保留/预加载逻辑。这应该发生在(Post)构造函数和/或(Action)侦听器方法中，但肯定不是在getter方法中。getter方法应该只返回数据模型，仅此而已。

如果您仍然使用JSF1.x，而JSF1.x没有新的JSF2.x视图范围，则需要向引用请求范围的托管bean的页面添加一个<a4j:keepAlive>。