JSF 2.0第一次更新一个不工作的primefaces对话框



我有一个简单的表单,要求用户输入文本。然后,当用户单击链接时,将显示一个对话框,其中包含用户输入的值。我遇到的第一个问题是对话框没有显示。

另一个问题与更新有关。第一次显示表单时,HTML代码正确,且"#{dialogBean.location}"当前值为空。

然后我点击链接,HTML代码是"错误的"。这就是为什么我猜它没有显示:
<form id="dialogForm" name="dialogForm" method="post" action="/tcmt-component/dialog.xhtml" enctype="application/x-www-form-urlencoded">
<input type="hidden" name="dialogForm" value="dialogForm">
<input type="hidden" autocomplete="off" value="-6424900608015567042:-9068630845666043913" id="javax.faces.ViewState" name="javax.faces.ViewState"></form>
与此同时,我检查Ajax调用的返回。#{dialogBean.location}仍为空
<?xml version='1.0' encoding='UTF-8'?>
<partial-response><changes><update id="dialogForm:dialog"><![CDATA[<div id="dialogForm:dialog" style="display:none" title="Dialog">  
        Current Location:

我再次点击链接,这次#{dialogBean.location}的值被设置为正确的值。

<?xml version='1.0' encoding='UTF-8'?>
<partial-response><changes><update id="dialogForm:dialog"><![CDATA[<div id="dialogForm:dialog" style="display:none" title="Dialog">  
        Current Location: MyLocation

Bean:

@ManagedBean
@SessionScoped
public class DialogBean implements Serializable {
    private String location;
    public void setLocation(String location) {
        this.location = location;
    }
    public String getLocation() {
        return location;
    }
}
视图:

<?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:f="http://java.sun.com/jsf/core"      
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:p="http://primefaces.prime.com.tr/ui">
  <h:head> 
  </h:head>
    <h:body>
        <h:form id="initForm">
        <h:inputText id="location" value="#{dialogBean.location}" />
        <p:commandLink update="dialogForm:dialog" onclick="dlg.show()">  
            <h:outputText value="Show Dialog" />  
        </p:commandLink>
        </h:form>  
        <h:form id="dialogForm">
        <p:dialog id="dialog" header="Dialog" widgetVar="dlg" resizable="false">  
        Current Location: <h:outputText value="#{dialogBean.location}" />
        <p:commandButton value="Close" oncomplete="dlg.hide();"/>
        </p:dialog>
        </h:form>  
    </h:body>
</html>
<<p> 解决方案/strong>

这似乎是一个更新对话框的primefaces问题。相反,我将对话框包装在一个面板中,更新工作:

<p:dialog header="Dialog" widgetVar="dlg" resizable="false">  
<p:outputPanel id="dialogPanel">
Current Location: <h:outputText value="#{dialogBean.location}" />
    <h:form id="dialogForm">
<p:commandButton value="Close" oncomplete="dlg.hide();"/>
</h:form>  
</p:outputPanel>
</p:dialog>
<h:form id="initForm">
<h:inputText id="location" value="#{dialogBean.location}" />
<p:commandLink update="dialogPanel" onclick="dlg.show()">  
    <h:outputText value="Show Dialog" />  
</p:commandLink>
</h:form>

尝试将对话框放在命令链接之前,如下所示:

  <p:outputPanel id="panel">
       <h:form id="dialogForm">
           <p:dialog id="dialog" header="Dialog" widgetVar="dlg" resizable="false">  
           Current Location: <h:outputText value="#{dialogBean.location}" />
           <p:commandButton value="Close" oncomplete="dlg.hide();"/>
           </p:dialog>
       </h:form>  
 </p:outputPanel>
     <h:form id="initForm">
    <h:inputText id="location" value="#{dialogBean.location}" />
    <p:commandLink update="dialogForm:dialog" onclick="dlg.show()" update="panel">  
        <h:outputText value="Show Dialog" />  
    </p:commandLink>
    </h:form>

另一个简单的解决方案是:如果你使用Primefaces 3.0(或更高版本),你可以为对话框添加动态属性,并将其设置为true。这是主面3.2的VDL动态模式允许对话框在显示之前获取内容,而不是在页面加载时获取内容,这有助于减少初始页面加载时间。默认为false

我最近几天一直有这个问题,在阅读了这篇文章之后,我只是通过从我的panelGrid|outputPanel中删除'layout="block"'来解决我的问题。我有update="pageContentPanel"嵌入在我的CRUD表单页面,现在这个AJAX PPR工作得更好。我猜AJAX PPR(和PrimeFaces 3.0 M3)与span标签比div标签工作得更好。(

    <ui:define name="pageContent">
        <p:outputPanel id="pageContentPanel">
            <p:outputPanel layout="block" rendered="#{pageNavigationController.isPageSelected('/pageContent_blank.xhtml')}">
                <ui:include src="/pageContent_blank.xhtml"/>
            </p:outputPanel>
            <p:outputPanel layout="block" rendered="#{pageNavigationController.isPageSelected('/service/pf_Add.xhtml')}">
                <ui:include src="/service/pf_Add.xhtml"/>
            </p:outputPanel>
            <p:outputPanel layout="block" rendered="#{pageNavigationController.isPageSelected('/service/pf_Browse.xhtml')}">
                <ui:include src="/service/pf_Browse.xhtml"/>
            </p:outputPanel>
            <p:outputPanel layout="block" rendered="#{pageNavigationController.isPageSelected('/service/pf_Edit.xhtml')}">
                <ui:include src="/service/pf_Edit.xhtml"/>
            </p:outputPanel>
            <p:outputPanel layout="block" rendered="#{pageNavigationController.isPageSelected('/service/pf_View.xhtml')}">
                <ui:include src="/service/pf_View.xhtml"/>
            </p:outputPanel>
        </p:outputPanel>
    </ui:define>

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