PanelGrid中的多個JSF組件

Question

我想用@ Balusc先前的答案在How to make a grid of JSF composite component?作爲參考使用Facelet標記文件獲取可重用的jsf 1.2組件內部組件。我已經複製了/WEB-INF/tags/input.xhtml和example.taglib.xml以及主應用程序xhtml。但是，我遇到了一些問題。
1.如果我沒有通過ID和簡單地做

<my:input id="cat" type="text" label="FirstName" bean="#{bean}" property="fName" required="true" /> 
<my:input id="dog" type="text" label="LastName" bean="#{bean}" property="lName" required="true /> 

在我的主XHTML和打開網頁，我得到java.lang.IllegalArgumentException異常和異常跟蹤：

java.lang.IllegalArgumentException 
at javax.faces.component.UIComponentBase.validateId(UIComponentBase.java:543) 
at javax.faces.component.UIComponentBase.setId(UIComponentBase.java:351) 
at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:151) 
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) 
at com.sun.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:119) 
at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49) 
at com.sun.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:25) 
at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:248) 
at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:294) 
at com.sun.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:268) 
at com.sun.facelets.tag.UserTagHandler.apply(UserTagHandler.java:98) 
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) 
at com.sun.facelets.tag.jsf.ComponentHandler.applyNextHandler(ComponentHandler.java:314) 
at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:169) 
at com.sun.facelets.tag.jsf.ComponentHandler.applyNextHandler(ComponentHandler.java:314) 
at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:169) 
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) 
at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49) 
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) 
at com.sun.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:25) 
at com.sun.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:95) 
at com.sun.facelets.FaceletViewHandler.buildView(FaceletViewHandler.java:524) 
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:567) 
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100) 
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) 
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110) 
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) 
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) 

2.To闖過這一點，當我通過我的標籤id值

<my:input id="cat" type="text" label="FirstName" bean="#{bean}" property="fName" required="true" /> 
<my:input id="dog" type="text" label="LastName" bean="#{bean}" property="lName" required="true /> 

我得到重複的ID爲組件j_id2：貓錯誤。

java.lang.IllegalStateException: duplicate Id for a component j_id2:cat 
at org.ajax4jsf.application.TreeStructureNode.apply(TreeStructureNode.java:68) 
at org.ajax4jsf.application.TreeStructureNode.apply(TreeStructureNode.java:92) 
at org.ajax4jsf.application.TreeStructureNode.apply(TreeStructureNode.java:92) 
at org.ajax4jsf.application.TreeStructureNode.apply(TreeStructureNode.java:92) 
at org.ajax4jsf.application.AjaxStateManager.getTreeStructureToSave(AjaxStateManager.java:187) 
at org.ajax4jsf.application.AjaxStateManager.buildViewState(AjaxStateManager.java:498) 
at org.ajax4jsf.application.AjaxStateManager.saveSerializedView(AjaxStateManager.java:451) 
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:615) 
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100) 
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) 
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110) 
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) 
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) 
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266) 

3.To突破這個，我刪除了所有的C：當，只是不停地在input.xhtml「文本」的一個輸入類型，現在我看到2個文本框呈現但是當我做圖源，我看到

<tr> 
    <td> 
    <c:set var="id" value="cat"></c:set> 
    <c:set var="required" value="true"></c:set> 
    </td> 
    <td><label for="j_id2:cat">First Name: &nbsp;*&nbsp;</label></td> 
    <td><input id="j_id2:cat" type="text" name="j_id2:cat" value="Smith" /></td> 
</tr> 
<tr> 
    <td></td> 
    <td> 
    <c:set var="id" value="dog"></c:set> 
    <c:set var="required" value="true"></c:set> 
    </td> 
    <td><label for="j_id2:dog">Last Name: &nbsp;*&nbsp;</label></td> 
</tr> 
<tr> 
    <td><input id="j_id2:dog" type="text" name="j_id2:dog" value="Joe" /></td> 
    <td></td> 
</tr> 

我期待2行，但看到3行instead.Also我沒;噸期待C：在標籤文件集定義是我的TD圖的一部分。

任何指針將不勝感激。

Answer 1

對於Facelets的1.x中，你需要聲明JSTL核心標籤庫中的以下XML命名空間：

xmlns:c="http://java.sun.com/jstl/core" 

請注意，有一個在URI中找到Facelets 1.x的無/jsp