【发布时间】：2015-01-13 10:23:10
【问题描述】：
我目前正在阅读 JavaEE7 的教程，当前章节是 JSF/PrimeFaces。我需要为删除操作添加一个确认对话框，页面呈现正常。当我按下 commandButton（第 14 行）时，actionListener 会触发，但 Confirmation.show() 在 Web 控制台中会产生错误：“参考错误：未定义确认”并且 confirmDialog 不会呈现。据我了解，“widgetVar=confirmation”是定义。想知道我做错了什么。
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:p="http://primefaces.org/ui">
<body>
<f:view contracts="#{view.locale.language}">
<ui:composition template="/template.xhtml">
<ui:define name ="content">
<h1>#{msg['listCampaigns.my_campaigns']}</h1>
<h:form>
<p:dataTable value="#{campaignListProducer.campaigns}" var="campaign">
<p:column>
<p:commandButton onclick="confirmation.show()" actionListener="#{listCampaignsController.doDeleteCampaign(campaign)}" icon="ui-icon-close" />
</p:column>
<p:column>
<f:facet name="header">#{msg['listCampaigns.name']}</f:facet>
<h:outputText value="#{campaign.name}" />
</p:column>
<p:column>
<f:facet name="header">#{msg['listCampaigns.target_amount']}</f:facet>
<h:outputText value="#{campaign.targetAmount}">
<f:convertNumber type="currency" currencyCode="EUR" />
</h:outputText>
</p:column>
<p:column>
<f:facet name="header">#{msg['listCampaigns.donated_so_far']}</f:facet>
<h:outputText value="#{campaign.amountdonatedSoFar}">
<f:convertNumber type="currency" currencyCode="EUR" />
</h:outputText>
</p:column>
<p:column>
<p:commandLink value="#{msg['listCampaigns.edit']}" ajax="false" action="#{listCampaignsController.doEditCampaign(campaign)}">
</p:commandLink>
</p:column>
<p:column>
<p:commandLink value="#{msg['listCampaigns.list_donations']}" ajax="false" action="#{listCampaignsController.doListDonations(campaign)}">
</p:commandLink>
</p:column>
<p:column>
<p:commandLink value="#{msg['listCampaigns.form']}" ajax="false" action="#{listCampaignsController.doEditDonationForm(campaign)}">
</p:commandLink>
</p:column>
</p:dataTable>
<p:commandButton value="#{msg['listCampaigns.add_campaign']}" ajax="false" action="#{listCampaignsController.doAddCampaign()}" />
<p:confirmDialog message="#{msg['listCampaigns.ask_delete_campaign']}"
header="#{msg['listCampaigns.delete_campaign']}"
severity="alert"
widgetVar="confirmation" >
<p:commandButton value="#{msg['listCampaigns.yes']}"
oncomplete="confirmation.hide()"
ajax="false"
actionListener="#{listCampaignsController.commitDeleteCampaign}" />
<p:commandButton value="#{msg['listCampaigns.no']}" onclick="confirmation.hide()" type="button" />
</p:confirmDialog>
</h:form>
</ui:define>
</ui:composition>
</f:view>
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标签： jsf primefaces