具有复合子元素的复合组件与ui一起使用时将值混合:重复

Question

具有复合子元素的复合组件与ui一起使用时将值混合:重复

Run*_*ein 6 jsf facelets composite-component jsf-2 uirepeat

我试图通过嵌套一个孩子来使两个复合组件很好地协同工作.该设置包含一个灯箱和一个带有名为"Value"的属性的输入.这工作正常,直到我引入动态数量的输入,因此必须使用ui:repeat.

bugTest.xhtml

<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:pw="http://java.sun.com/jsf/composite/components">

    <h:head></h:head>
    <h:body>
        <pw:lightBox value="Header">
            <h:form>
                <ui:repeat var="input" value="#{BugTestBean.inputs}">
                    <pw:bugTestInput value="#{input}" />
                </ui:repeat>
            </h:form>
        </pw:lightBox>
    </h:body>
</html>

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ui:repeat似乎混淆了两个组件的value属性,并发生以下异常.

Caused by: javax.el.PropertyNotFoundException: /resources/components/bugTestInput.xhtml @15,62 value="#{cc.attrs.value.text}": The class 'java.lang.String' does not have the property 'text'.
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
at javax.faces.component.UIOutput.getValue(UIOutput.java:170)
at javax.faces.component.UIInput.getValue(UIInput.java:284)
at com.sun.faces.facelets.component.UIRepeat$SavedState.populate(UIRepeat.java:879)
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:396)
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:402)
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:402)
at com.sun.faces.facelets.component.UIRepeat.saveChildState(UIRepeat.java:356)
at com.sun.faces.facelets.component.UIRepeat.setIndex(UIRepeat.java:470)
at com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:586)
at com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:1042)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1819)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:847)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)
at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:105)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:847)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)
at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:105)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:847)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1819)
at com.sun.faces.renderkit.html_basic.CompositeRenderer.encodeChildren(CompositeRenderer.java:78)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:847)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1819)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1822)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1822)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:447)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125)
at com.ocpsoft.pretty.faces.application.PrettyViewHandler.renderView(PrettyViewHandler.java:159)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
... 33 more

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似乎灯箱的价值正传递给输入.
已将该示例降至最低以产生错误.
我试过Mojarra 2.1.26和2.2.4.

BugTestBean.java

@ManagedBean(name="BugTestBean")
@ViewScoped
public class BugTestBean {
    private List<BugTestInput> inputs;

    public BugTestBean() {
        inputs = new ArrayList<BugTestInput>();
        inputs.add(new BugTestInput("Test1"));
        inputs.add(new BugTestInput("Test2"));
        inputs.add(new BugTestInput("Test3"));
        inputs.add(new BugTestInput("Test4"));
    }

    public List<BugTestInput> getInputs() {
        return inputs;
    }
}

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bugTestInput.xhtml

<cc:interface>
    <cc:attribute name="value" />
</cc:interface>
<cc:implementation>
    <div id="#{cc.clientId}">
        <h:inputText id="input" value="#{cc.attrs.value.text}" />
    </div>
</cc:implementation>

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BugTestInput.java

public class BugTestInput {
    private String text;

    public BugTestInput(String text) {
        this.text = text;
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }
}

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lightbox.xhtml

<cc:interface>
    <cc:attribute name="value" />
</cc:interface>
<cc:implementation>
    <div id="#{cc.clientId}">
        <h:outputText value="#{cc.attrs.value}" />
        <h:panelGroup>
            <cc:insertChildren />
        </h:panelGroup>
    </div>
</cc:implementation>

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当前解决方案

将属性值重命名为灯箱上的其他内容可以解决此问题.
在灯箱上保留属性值为空也有效.
不使用ui:repeat也会解决问题,但这不是很扎实.

目前我在灯箱上使用2个属性,并在需要时将值保留为空

<h:outputText value="#{cc.attrs.value}#{cc.attrs.title}" />

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跟进无论属性名称是什么,如果它们在两个组件上都相同,它将失败.这是JSF中的一个错误,我搜索了错误跟踪器和大多数新补丁说明没有结果.

Answer 1

Piy*_*era 0

您是否尝试过在JSTL<c:forEach>下使用标签而不是？我一直面临标签问题。<ui:repeat><ui:repeat>

<c:forEach>如果您不使用 ajax 调用重新渲染组件，应该可以工作。

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