Question

/test.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"   
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:composite="http://java.sun.com/jsf/composite/components">
    <f:view>

        <h:head>
            <title>Default Title</title>
        </h:head>

        <h:body>
            <h:form id="form">
                <composite:test id="composite"/>
            </h:form>
        </h:body>

    </f:view>

</html>

/resources/components/test.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:cc="http://java.sun.com/jsf/composite"
      xmlns:composite="http://java.sun.com/jsf/composite/components"
      xmlns:p="http://primefaces.org/ui">

    <head>
        <title>(For validation only)</title>
    </head>

    <body>
    <cc:interface>
    </cc:interface>

    <cc:implementation>

        <p:panel header="header foo bar">

            <p:panel>
                <f:facet name="header">
                    <h:outputText value="foo"/>

                    <h:outputText value="bar"/>
                </f:facet>
            </p:panel>

        </p:panel>

    </cc:implementation>

</body>

</html>

这种组合给出了：

GRAVE: Error Rendering View[/test.xhtml]
java.lang.IllegalStateException: Component ID form:composite:j_id2 has already been found in the view.

用这棵树：

GRAVE: JSF1007: Duplicate component ID form:composite:j_id2 found in view.
GRAVE: +id: j_id1
 type: javax.faces.component.UIViewRoot@47080ae5
  +id: javax_faces_location_HEAD
   type: com.sun.faces.component.ComponentResourceContainer@2daf59b3
    +id: j_id3
     type: javax.faces.component.UIOutput@532a0e33
    +id: j_id4
     type: javax.faces.component.UIOutput@6e0a60ec
    +id: j_id5
     type: javax.faces.component.UIOutput@6b615e64
    +id: j_id6
     type: javax.faces.component.UIOutput@457c2e4f
    +id: j_id7
     type: javax.faces.component.UIOutput@5bc4682c
    +id: j_id8
     type: javax.faces.component.UIOutput@3b934fc5
  +id: j_idt37
   type: <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  +id: j_idt38
   type: <html xmlns="http://www.w3.org/1999/xhtml">

  +id: j_idt39
   type: javax.faces.component.UIOutput@610364d1
    +id: j_idt40
     type: 
            <title>Default Title</title>

  +id: j_idt55
   type: javax.faces.component.UIOutput@25d00719
    +id: form
     type: javax.faces.component.html.HtmlForm@7c820db3
      +id: composite
       type: javax.faces.component.UINamingContainer@3e51a2a1
        +id: j_id2
         type: javax.faces.component.UIPanel@445a2d11
          +id: j_idt52
           type: org.primefaces.component.panel.Panel@618c17fd
            +id: j_idt53
             type: org.primefaces.component.panel.Panel@347b1513
              +id: j_id2
               type: javax.faces.component.UIPanel@7c44da25
                +id: j_idt50
                 type: javax.faces.component.html.HtmlOutputText@7ca4ad4f
                +id: j_idt54
                 type: javax.faces.component.html.HtmlOutputText@1f6e5d77
  +id: j_idt47
   type: 
</html>

但是，如果我以这种方式更改复合组件：

/resources/components/test.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:cc="http://java.sun.com/jsf/composite"
      xmlns:composite="http://java.sun.com/jsf/composite/components"
      xmlns:p="http://primefaces.org/ui">

    <head>
        <title>(For validation only)</title>
    </head>

    <body>
    <cc:interface>
    </cc:interface>

    <cc:implementation>

        <p:panel header="header foo bar">

            <p:panel>
                <f:facet name="header">
                    <h:panelGroup>
                        <h:outputText value="foo"/>

                        <h:outputText value="bar"/>
                    </h:panelGroup>
                </f:facet>
            </p:panel>

        </p:panel>

    </cc:implementation>

</body>

</html>

在<h:panelGroup>中添加<f:facet>可以解决问题。坏树索引或我错过了什么？我在Glassfish 3.1.1下使用mojarra 2.1.3和PrimeFaces 3.0.M4-SNAPSHOT。

Answer 1

根据JSF2文档，<f:facet>标记只能有一个子标记。如果要在facet标记中嵌套许多元素，则应首先将它们包装在<h:panelGroup>之类的其他容器中，然后将该单个父容器放在<f:facet>中。

你到底做了什么！

以下是参考资料：

JavaServer Faces 2.0, The Complete Reference - 作者：Ed Burns，Chris Schalk

（ISBN-10：0071625097 | ISBN-13：978-0071625098）

页码：538

摘要：

f：facet 标记表示具有特殊功能的嵌套组件与其封闭标签的关系。例如，说明了表的“头”将由JSF组件提供。这个元素将JSF操作所代表的组件添加到其正文中作为具有指定名称的facet表示的组件最接近的JSF组件父动作元素。此标记仅允许一个要嵌套的组件本身。 使用多个组件作为 facet，将它们创建为简单容器组件的子项。对于例如，在其中嵌套相应的HTML库组件操作正文 panelGroup 组件。

Answer 2

关于错误JSF1007，请查看：artilce

组件ID形式：composite：j_id2已在视图中找到

2 个答案:

以下是参考资料：