我在一个 xhtml 页面中当然有一个 bean 绑定的消息。
现在消息在一个列表中，我正在使用 ui:repeat 来显示消息和所有内容。现在，当我打开一条消息时，dialogGrid 中有一个回复按钮，它会在同一页面上打开另一个对话框，我只需要将数据传递给该回复对话框。首先，它工作正常，我的意思是，如果您直接单击回复按钮，它工作正常，但是当您打开消息然后单击回复时，它不会更新对话框。
但是我的 Bean 是请求范围的
这是我的 xhtml 代码
<?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:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="../Styles/homepage-style.css" />
<link rel="stylesheet" type="text/css" href="../Styles/profile.css" />
<title>Shadi Bandhan | We find the best match for you</title>
</h:head>
<h:body>
<div id="header">
<ui:insert name="header" >
<ui:include src="header.xhtml" />
</ui:insert>
</div>
<div id="main-content">
<p:growl autoUpdate="true" />
<div id="left-pane">
<div id="profile-info-area">
<ui:insert name="profile_info_area" >
<ui:include src="profileInfoArea.xhtml" />
</ui:insert>
</div>
<div id="home-main-area">
<div id="messages-wrapper">
<div id="messages-header">
<div id="m-heading">
Messages - Inbox
</div>
<div id="m-search">
<div id="searchbox">
Search Messages <input type="text" value="Search" />
</div>
<div id="newmessage">
<a href="#"> + New Message </a>
</div>
</div>
</div>
<h:form id="messagesForm">
<div id="messages">
<p:dialog id="messagesDialog" modal="true" widgetVar="messageDialog" resizable="false" width="750" height="300" header="New Message" >
<h:panelGrid columns="2" id="dialogGrid">
<p:column>
<h:outputLabel for="msgRecepient" value="To"/>
</p:column>
<p:column>
<h:outputLabel id="msgRecepient" value="#{userMsg.userFullname}" >
</h:outputLabel>
</p:column>
<p:column>
<h:outputLabel for="msgContents" value="Message"/>
</p:column>
<p:column>
<p:inputTextarea maxlength="300" id="msgContents" value="#{messagesManagedBean.msg.message}" cols="65" rows="3" >
<p:watermark for="msgContents" value="#{userMsg.userId}" />
</p:inputTextarea>
</p:column>
<p:column>
<p:commandButton id="msgSend" value="Send" action="#{messagesManagedBean.sendMessage('reply')}" oncomplete="messageDialog.hide()" >
<f:param value="#{userMsg.userId}" name="messageSenderId" />
</p:commandButton>
</p:column>
</h:panelGrid>
</p:dialog>
<p:dialog id="messagesDialog2" modal="true" widgetVar="messageDialog2" resizable="false" width="750" height="300" header="New Message" >
<h:panelGrid columns="2" id="dialogGrid2">
<p:column>
<h:outputLabel for="msgRecepient2" value="From"/>
</p:column>
<p:column>
<h:outputLabel id="msgRecepient2" value="#{userMsg.userFullname}" >
</h:outputLabel>
</p:column>
<p:column>
<h:outputLabel for="msgContents2" value="Message"/>
</p:column>
<p:column>
<p:inputTextarea readonly="true" id="msgContents2" value="#{userMsg.message}" cols="65" rows="3" >
</p:inputTextarea>
</p:column>
<p:column>
<p:commandButton styleClass="reply-btn" value="Reply" update=":messagesForm:dialogGrid"
oncomplete="messageDialog.show(), messageDialog2.hide()">
<f:param name="userMsg" value="#{userMsg}" />
</p:commandButton>
</p:column>
</h:panelGrid>
</p:dialog>
<ui:repeat var="userMsg" value="#{messagesManagedBean.paginator1.model}">
<center><img class="h-diff" src="../images/differentiator-profile.jpg" width="437" height="1" /></center>
<div id="message">
<div id="senderImg">
<img class="senderImg" src="../images/profile-pic.jpg" width="50" height="50" />
</div>
<div id="message-txt-area">
<div id="senderName">
<p:commandLink styleClass="senderName" value="#{userMsg.userFullname}" action="#{myProfileManagedBean.loadProfileFrontInformation(userMsg.userId)}"></p:commandLink>
</div>
<ui:fragment rendered="#{userMsg.isRead}">
<div id="message-txt">
#{userMsg.message}
</div>
</ui:fragment>
<ui:fragment rendered="#{not userMsg.isRead}">
<div id="message-txt" class="msgNotRead">
#{userMsg.message}
</div>
</ui:fragment>
<div id="msgAction">
<p:commandLink styleClass="reply-btn"
value="Reply" oncomplete="messageDialog.show()" update=":messagesForm:dialogGrid">
<f:param name="userMsg" value="#{userMsg}" />
</p:commandLink>
<ui:fragment rendered="#{userMsg.isRead}">
<p:commandLink styleClass="open-btn" value="Open"
oncomplete="messageDialog2.show()" update=":messagesForm:dialogGrid2">
<f:param name="userMsg" value="#{userMsg}" />
</p:commandLink>
</ui:fragment>
<ui:fragment rendered="#{not userMsg.isRead}">
<p:commandLink styleClass="open-btn" value="Open"
action="#{messagesManagedBean.messageOpenedListener(userMsg.messageId)}"
oncomplete="messageDialog2.show()" update=":messagesForm:dialogGrid2">
<f:param name="userMsg" value="#{userMsg}" />
</p:commandLink>
</ui:fragment>
</div>
</div>
</div>
</ui:repeat>
<h:commandButton value="< prev" action="#{messagesManagedBean.paginator1.prev}"/>
<h:outputText value="#{messagesManagedBean.paginator1.pageIndex} / #{messagesManagedBean.paginator1.pages}"/>
<h:commandButton value="next >" action="#{messagesManagedBean.paginator1.next}"/>
<h:inputHidden value="#{messagesManagedBean.paginator1.pageIndex}"/>
</div>
</h:form>
</div>
</div>
</div>
<div id="right-pane">
<ui:insert name="right-pane" >
<ui:include src="right-pane.xhtml" />
</ui:insert>
</div>
</div>
<div id="footer">
<ui:insert name="footer" >
<ui:include src="footer.xhtml" />
</ui:insert>
</div>
</h:body>
</html>