我有一个PrimeFaces数据表，它显示一组用户，每行都有一个要删除的commandLink。单击链接时，将显示confirmDialog，其中显示“是”按钮，该按钮应调用辅助bean中的“删除”方法。不幸的是，没有调用此方法，只是隐藏了对话框。设置链接中的参数是因为我在调试器中看到了它。
这是我的页面：
<?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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head><title>Manage users</title></h:head>
<h:body>
<ui:composition template="../../template/commonLayout.xhtml">
<ui:define name="content">
<p:layoutUnit position="center">
<h:form id="datatable">
<p:tabView>
<p:tab title="Users">
<p:button value = "Add user" outcome="addUser.xhtml?faces-redirect=true"/>
<p:growl id="messages" showDetail="true"/>
<p:dataTable id="usersTable" var="user" value="#{userMB.userList}" paginator="true" rows="25"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}">
<p:ajax event="rowEdit" listener="#{userMB.onEditUser}" />
<p:column headerText="First name">
<h:outputText value="#{user.firstName}" />
</p:column>
<p:column headerText="Last name">
<h:outputText value="#{user.lastName}" />
</p:column>
<p:column headerText="E-mail">
<h:outputText value="#{user.email}" />
</p:column>
<p:column headerText="Username">
<h:outputText value="#{user.username}"/>
</p:column>
<p:column headerText="Hire date">
<h:outputText value="#{user.hireDate}">
<f:convertDateTime type="date" pattern="dd.MM.yyyy"/>
</h:outputText>
</p:column>
<p:column headerText="Working hours">
<h:outputText value="#{user.workingHours}" />
</p:column>
<p:column headerText="Vacation days">
<h:outputText value="#{user.vacationDays}"/>
</p:column>
<p:column>
<h:link outcome="addUser" value="Edit">
<f:param name="userID" value="#{user.id}" />
</h:link>
</p:column>
<p:column>
<p:commandLink value="Delete" onclick="deleteConfirmDlg.show()">
<f:setPropertyActionListener value="#{user}" target="#{userMB.currentUser}" />
</p:commandLink>
</p:column>
</p:dataTable>
<p:confirmDialog id="deleteConfirmDialog" message="Are you sure?" header="Delete user" severity="alert" widgetVar="deleteConfirmDlg" appendToBody="true">
<p:commandButton id="confirmDelete" value="Yes" oncomplete="deleteConfirmDlg.hide()" update="usersTable" actionListener="#{userMB.deleteUser}"/>
<p:commandButton id="declineDelete" value="No" onclick="deleteConfirmDlg.hide()" type="button"/>
</p:confirmDialog>
</p:tab>
<p:tab title="Teams">
<p:button value = "Add team" outcome="addTeam.xhtml?faces-redirect=true"/>
<p:dataTable var="team" value="#{userMB.teamList}" paginator="true" rows="25"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}">
<p:column headerText="Name">
<h:outputText value="#{team.name}" />
</p:column>
<p:column headerText="Team leader">
<h:outputText value="#{team.teamLeader.displayName}" />
</p:column>
</p:dataTable>
</p:tab>
</p:tabView>
</h:form>
</p:layoutUnit>
</ui:define>
</ui:composition>
Backing bean方法：
public void deleteUser(ActionEvent event) {
if (null != currentUser) {
// check if userID is set and delete
System.out.println("delete user with id " + currentUser.getId());
userService.deleteUser(currentUser);
currentUser = new User();
}
}
我检查过，我没有嵌套表单，因为这是最常见的情况，因为没有调用辅助bean ...
以下是我的模板文件：
CommonLayout.xhtml
<?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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head>
<h:outputStylesheet library="css" name="default.css" />
</h:head>
<h:body>
<p:layout fullPage="true">
<div id ="header">
<ui:insert name="header">
<ui:include src="commonHeader.xhtml"></ui:include>
</ui:insert>
</div>
<div id="left-menu">
<ui:insert name="left-menu">
<ui:include src="leftMenu.xhtml"></ui:include>
</ui:insert>
</div>
<div id ="content">
<ui:insert name="content">
<ui:include src="commonContent.xhtml"></ui:include>
</ui:insert>
</div>
</p:layout>
</h:body>
</html>
CommonHeader.xhtml：
<?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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head>
</h:head>
<h:body>
<ui:composition>
<p:layoutUnit position="north" size="100">
<h:outputText value="Welcome #{request.remoteUser}!"/> <br />
<a href="#{request.contextPath}/j_spring_security_logout">Logout</a><br />
</p:layoutUnit>
</ui:composition>
</h:body>
</html>
CommonContent.xhtml：
<?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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head>
</h:head>
<h:body>
<ui:composition>
<p:layoutUnit position="center">
<ui:include src="../widgets/schedule.xhtml"/>
</p:layoutUnit>
</ui:composition>
</h:body>
</html>
LeftMenu.xhtml：
<?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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head>
</h:head>
<h:body>
<ui:composition>
<p:layoutUnit position="west" size="200">
<h:form>
<p:menu width="100%" rendered="#{request.isUserInRole('ROLE_MANAGER')}">
<p:submenu label="Management">
<p:menuitem value="Manage users" outcome="/pages/management/manageUsers.xhtml?faces-redirect=true"></p:menuitem>
</p:submenu>
</p:menu>
</h:form>
</p:layoutUnit>
</ui:composition>
</h:body>
</html>
我正在使用PrimeFaces 3.4和JSF 2.0
答案 0 :(得分：20)
在DOM就绪期间，<p:confirmDialog ... appendToBody="true">将使得确认对话框的HTML表示形式被JavaScript重新定位到HTML <body>元素的末尾。
然而，这导致确认对话框的HTML表示不再在任何形式内。因此，没有提交任何表单并且没有发送请求参数，因此JSF将无法识别该操作。
您需要将确认对话框设为自己的<h:form>。
<p:confirmDialog ...>
<h:form>
...
</h:form>
</p:confirmDialog>
为了避免在维护期间混淆（嵌套表单是非法的），我还建议将该组件移动到模板的末尾，至少在“外部”<h:form>之后。< / p>