PrimeFaces组件不显示，而标准JSF组件可以正常显示 [英] PrimeFaces components don't display while standard JSF components render fine

问题描述

Java EE6/CDI JSF2 Primefaces 3.3.1.我创建了一个搜索页面，其中包含一些级联下拉列表，这些下拉列表用于生成搜索结果表(如果使用jsf:

Java EE6/CDI JSF2 Primefaces 3.3.1. I created a search page with a few cascading dropdowns that are used to generate a table of search results If I use jsf:

<h:dataTable  var="_employeeVList" value="#{employeeVProducer.employeeVList}"  rendered="#{not empty employeeVProducer.employeeVList}"> 
    <f:facet name="header">  
        Employee Search Results 
    </f:facet>
    <h:column>
        <f:facet name="header">Area</f:facet>
        <h:outputText value="#{_employeeVList.areaName}" />
    </h:column>
    ...
</h:dataTable>

该表呈现输出，html看起来很正常.但是当我换成素数时:

The table renders with output, html looks normal. But when I change to primefaces:

<p:dataTable  var="_employeeVList" value="#{employeeVProducer.employeeVList}"  rendered="#{not empty employeeVProducer.employeeVList}"> 
    <f:facet name="header">  
        Employee Search Results 
    </f:facet>
    <p:column>
        <f:facet name="header">Area</f:facet>
        <h:outputText value="#{_employeeVList.areaName}" />
    </p:column>
    ...
</p:dataTable>

该表未显示.当我用Firebug查看源代码时，我发现html有点奇怪:

The table doesn't display. When I look at the source with firebug I see some weirdness with the html:

    <table id="searchForm:results">
    <tbody>
    <tr>
    <td>
    <p:datatable rendered="true" value="[com.raytheon.myPkg.EmployeeV@f486,                                 com.raytheon.myPkg.EmployeeV@88fe,                              com.raytheon.myPkg.EmployeeV@adaf, 
                                          ...
                                com.raytheon.myPkg.EmployeeV@6a5b]" 
var="_employeeVList">
    <p:column></p:column>
    <p:column></p:column>
    ...                          
    </p:datatable></td>
    </tr>
    </tbody>
    </table>

对象在标签标签中，列为空. 在页面的其他地方，我使用的是p:panelGrid，其中包含下拉菜单并可以正确显示.

The objects are in the tag label, the columns are empty. Elsewhere in the page I'm using p:panelGrid, that contains the dropdowns and that displays correctly.

我的默认模板页面中有h:head和h:body.

I have h:head and h:body in my default template page.

该表由有状态请求范围的Bean支持.

The table is backed by a stateful request scoped bean.

我没有使用任何外部JavaScript.

I'm not using any external JavaScript.

我在做什么错了?

推荐答案

因此，<p:xxx>标记根本没有被解析为JSF标记，并且在生成的HTML输出中显得很普通.可能有以下一个或多个原因:

Thus, the <p:xxx> tags are not been parsed as JSF tags at all and appear plain vanilla in the generated HTML output. That can have one or more of the following reasons:

1. 您忘记在视图中声明p: XML名称空间，或者您使用了错误的名称空间URI.应该是:

1. You forgot to declare the p: XML namespace in the view, or you used the wrong namespace URI. It should be:

xmlns:p="http://primefaces.org/ui"

您忘记了实际安装PrimeFaces库.要么是问题，要么是

You forgot to actually install the PrimeFaces library. It should be a matter of either

a.将primefaces.jar拖放到webapp的/WEB-INF/lib文件夹中.

a. Dropping primefaces.jar in webapp's /WEB-INF/lib folder.

b.确保已将依赖项管理器(例如Maven)配置为将PrimeFaces添加到项目并将其添加到运行时/WEB-INF/lib文件夹

b. Making sure your dependency manager (e.g. Maven) has been configured to add PrimeFaces to the project and added it to the runtime /WEB-INF/lib folder

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