JSF输入元素值导致页面刷新后ui崩溃[重复]

【问题标题】：JSF input element value leads to ui crash after page refresh [duplicate]JSF输入元素值导致页面刷新后ui崩溃[重复]
【发布时间】：2015-04-28 20:41:48
【问题描述】：

我有一个输入字段的 ui 掩码模型。该模型使用 ui:repeat 渲染。该模型是面向网格的，因此有一个类 SearchMaskRow 聚合了 SearchMaskColumn。 SearchMaskColumn 有一个成员属性，它本身有一个 Object 类型的成员值。

这里是迭代的重要部分：

<p:panelGrid id="searchMaskFieldsStaticGridId" styleClass="searchMaskFieldsGrid"
    rendered="#{not curSearch.isClosable()}">
    <ui:repeat value="#{curSearch.getSearchMaskDescription().getRows()}" var="curRow">
        <p:row styleClass="searchMaskRow">
            <ui:repeat value="#{curRow.elements}" var="curElement">
                <p:column colspan="#{curElement.columnSpan}"
                    styleClass="#{curElement.isOfDataTypeStr('label') ? 'searchMaskLabelColumn' : 'searchMaskInputColumn'}">

                    <!--  label -->
                    <h:outputLabel value="#{curElement.property.getValue()} #{curElement.colonOnRightSide ? ':' : ''}" for="colInputTextId"
                        rendered="#{curElement.isOfDataTypeStr('label')}" />

                    <!-- date data type -->
                    <p:calendar id="colCalendarId" styleClass="searchMaskInputElement" value="#{curElement.property.value}"
                        rendered="#{curElement.isOfDataTypeStr('date')}" showButtonPanel="true" showOn="button"
                        pages="#{curElement.getCalendarPages()}" size="#{curElement.getWidthInCharacters()}" />

                    <!-- string and integer data type -->
                    <p:inputText id="colInputTextId" styleClass="searchMaskInputElement" value="#{curElement.property.value}"
                        rendered="#{curElement.isOfDataTypeStr('string') or curElement.isOfDataTypeStr('integer')}"
                        size="#{curElement.getWidthInCharacters()}" />

                </p:column>
            </ui:repeat>
            <ui:param name="unfilledColumnsCount"
                value="#{searchBL.determinedUnfilledColumns(curSearch.getSearchMaskDescription(), curRow)}" />
            <p:column colspan="#{unfilledColumnsCount}" rendered="#{unfilledColumnsCount gt 0}">
                <h:outputLabel value="" />
            </p:column>
        </p:row>
    </ui:repeat>
</p:panelGrid>

在第一次访问 ui 时一切正常。但是，如果通过单击浏览器刷新按钮或提交 url 刷新页面，则会出现以下异常：

13:44:17,507 SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (http-/0.0.0.0:9090-2) Error Rendering View[/icarchive/views/main.xhtml]: javax.el.PropertyNotFoundException: /icarchive/sections/firstSearchTab.xhtml @30,95 value="#{curElement.property.value}": The class 'java.lang.String' does not have the property 'property'.
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIOutput.getValue(UIOutput.java:170) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at com.sun.faces.facelets.component.UIRepeat$SavedState.populate(UIRepeat.java:829) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:370) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:376) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:376) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:376) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:356) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.setIndex(UIRepeat.java:441) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:483) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:990) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at org.primefaces.component.panelgrid.PanelGridRenderer.encodeStaticBody(PanelGridRenderer.java:155) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.component.panelgrid.PanelGridRenderer.encodeTableBody(PanelGridRenderer.java:104) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.component.panelgrid.PanelGridRenderer.encodeTableLayout(PanelGridRenderer.java:65) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.component.panelgrid.PanelGridRenderer.encodeEnd(PanelGridRenderer.java:37) [primefaces-5.1.12.jar:5.1.12]
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:881) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at org.primefaces.component.tabview.TabViewRenderer.encodeTabContent(TabViewRenderer.java:309) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.component.tabview.TabViewRenderer.encodeContents(TabViewRenderer.java:283) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.component.tabview.TabViewRenderer.encodeMarkup(TabViewRenderer.java:132) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.component.tabview.TabViewRenderer.encodeEnd(TabViewRenderer.java:71) [primefaces-5.1.12.jar:5.1.12]
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:881) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:851) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:79) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.renderkit.CoreRenderer.renderChildren(CoreRenderer.java:66) [primefaces-5.1.12.jar:5.1.12]
at org.primefaces.component.layout.LayoutUnitRenderer.encodeEnd(LayoutUnitRenderer.java:49) [primefaces-5.1.12.jar:5.1.12]
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:881) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:439) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:124) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:286) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:286) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:286) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
at org.apache.myfaces.extensions.cdi.jsf2.impl.listener.phase.CodiLifecycleWrapper.render(CodiLifecycleWrapper.java:126) [myfaces-extcdi-jsf20-module-impl-1.0.5.jar:1.0.5]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.1.19.1.Final-redhat-1.jar:2.1.19.1.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:105) [primefaces-5.1.12.jar:5.1.12]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at ip.client.commons.web.xss.filter.XSSFilter.doFilter(XSSFilter.java:53) [ip-filter-xss-4.3.0.jar:4.3.0]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.omnifaces.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:115) [omnifaces-1.8.1.jar:1.8.1-20140603]
at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:77) [omnifaces-1.8.1.jar:1.8.1-20140603]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at ip.client.web.filter.commons.AbstractFilter.doFilter(AbstractFilter.java:103) [ip-filter-commons-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.omnifaces.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:115) [omnifaces-1.8.1.jar:1.8.1-20140603]
at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:77) [omnifaces-1.8.1.jar:1.8.1-20140603]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.omnifaces.filter.GzipResponseFilter.doFilter(GzipResponseFilter.java:149) [omnifaces-1.8.1.jar:1.8.1-20140603]
at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:77) [omnifaces-1.8.1.jar:1.8.1-20140603]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_75]

提交值可能存在问题。但是我调试了 Property.setValue(value:Object) 方法并且设置了正确的对象。

如果我正确理解此异常，则 SearchMaskRow 中的 SearchMaskElements 列表（即 facelet 中的 curElement）是字符串类型。但我无法想象这是怎么回事。它是一个列表，也没有对该列表的设置访问权限，只能在迭代时读取。 SearchMaskRow 甚至没有设置器 setElements() 将字符串放入其中。 有人有想法吗？我不知道。

我正在使用： 莫哈拉 2.1.23 素面 5.1.12 de.odysseus.juel 2.2.6

问候 奥利弗

【问题讨论】：

  • 问题中没有对应的backing bean。在这里，javax.el.PropertyNotFoundException: /icarchive/sections/firstSearchTab.xhtml @30,95 value="#{curElement.property.value}": The class 'java.lang.String' does not have the property 'property'. 声明 curElement 是一个字符串类型的属性（您通过表达式 #{curElement.property.value} 在 &lt;p:calendar&gt; 和 &lt;p:inputText&gt; 中引用）并且不用说类 String 没有属性命名为property 在里面定义/声明。
  • curElement 是我自己的 SearchMaskColumn 类型的类。此类具有成员属性，并且属性具有名称值为 Object 类型的成员。所以Property里面的值可以是字符串，没关系，但是SearchMaskColumn永远不能是字符串。
  • curElement 是从#{curRow.elements} 获得的，而#{curRow.elements} 又是从#{curSearch.getSearchMaskDescription().getRows()} 获得的。您确定所有这些表达式都返回正确/所需的类型吗？消息症状清楚地表明curElement 是一个字符串类型的对象。因此，您不能使用curElement.property，因为curElement 确实有property。 （附带说明一下，您可以使用其他不错的 JSF/PrimeFaces 迭代器组件来实现相同的目的，例如 &lt;p:dataTable&gt;、&lt;p:dataGrid&gt;、&lt;p:dataList&gt; 等，而不是使用独立的 &lt;ui:repeat&gt;）。
  • 是的，我也对这个异常消息感到非常困惑。 curElement 不能是字符串。我什至没有设置器，只有一个 getter，我生成了一个泛型类型 SearchMaskElement 的列表。但也许我的方法还有另一个问题。我发布的代码在每个选项卡的 p:tabView 内。我只有一个表格用于所有选项卡。这可能是错误的？
  • 正确。我问只是因为很多次，人们看到在访问器方法中错误地实现业务逻辑，即使没有特殊情况这样做。

标签： jsf primefaces refresh


【解决方案1】：

你必须更改变量“value”的名称，我认为属性'value'和你的变量之间存在贡献。

祝你好运

【讨论】：

  • 尝试更改名称但未成功。同样的例外。如果它是名称，那么我认为 ui 的第一次渲染也可能不起作用。
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