Iframe的目标更新(Target Update of Iframe)

 我在<c:forEach>迭代器中更新iframe时遇到了一些问题： 
 
<h:form>
    <p:outputPanel rendered="#{dd.render()}">
        <p:tabView dynamic="true">
        <c:forEach var="aba" items="#{dd.abas}">
        <p:tab title="#{aba.orelha}" >
        <h2>
            <h:outputText value="#{aba.titulo}" />
            <p:selectOneMenu style="width:250px;  float:right;" value="#{aba.ln}" rendered="#{aba.selecaoAtiva}">
            <f:selectItems value="#{aba.itens}" />
             <p:ajax update="WHAT SHOULD GO HERE???" event="change" />
        </p:selectOneMenu>
        </h2>
            <f:view>
                <iframe src="very-Boring-And-Long-E.L.-Built-URL" width="#{dd.largura}" frameborder="0" height="#{dd.altura}" />
            </f:view>
            </p:tab>
        </c:forEach>
        </p:tabView>
    </p:outputPanel>
</h:form>
 
 我想在用户选择<p:selectOneMenu>上的内容时仅更新iframe内容。 原始代码在ajax标记上有@form ，并且正在更新整个表单并将用户放回第一个选项卡。 
 
 如何让ajax更新iframe而不会搞乱活动标签？ 

I have some problem with the update of a iframe inside a <c:forEach> iterator:
 
<h:form>
    <p:outputPanel rendered="#{dd.render()}">
        <p:tabView dynamic="true">
        <c:forEach var="aba" items="#{dd.abas}">
        <p:tab title="#{aba.orelha}" >
        <h2>
            <h:outputText value="#{aba.titulo}" />
            <p:selectOneMenu style="width:250px;  float:right;" value="#{aba.ln}" rendered="#{aba.selecaoAtiva}">
            <f:selectItems value="#{aba.itens}" />
             <p:ajax update="WHAT SHOULD GO HERE???" event="change" />
        </p:selectOneMenu>
        </h2>
            <f:view>
                <iframe src="very-Boring-And-Long-E.L.-Built-URL" width="#{dd.largura}" frameborder="0" height="#{dd.altura}" />
            </f:view>
            </p:tab>
        </c:forEach>
        </p:tabView>
    </p:outputPanel>
</h:form>
 
I want to update ONLY the iframe contents when the user selects something on the <p:selectOneMenu>. The original code had @form on the ajax tag, and was updating the whole form and putting the user back into the 1st tab.
 
How can I make the ajax update the iframe whithout messing with the active tab?

原文：https://stackoverflow.com/questions/14137887