【发布时间】：2013-08-07 06:22:05
【问题描述】：
我在使用 Primefaces 的相对简单的 JSF2 站点时遇到问题。我正在使用 Primefaces 3.5 和 WebSphere Application Server v7.0
我有一个带有 p:datatable 的页面，它显示文档。我希望能够使用确认/输入对话框添加、编辑和删除所述文档。但是当我单击“添加文档”按钮时，输入文档的名称并单击“保存”，表格中只有一个空行。当我单击编辑按钮并为其命名时，它会相应地保存。但如果我尝试编辑另一行，对话框会显示我最后编辑的文档名称。
引用可能有问题，但我无法理解它。我曾尝试研究该主题，但无济于事。当添加（或编辑）新文档时，setter 会被调用两次，所以我想知道它是否与 http://code.google.com/p/primefaces/issues/detail?id=4681
这是代码文件：
test.xhtml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui">
<h:head>
<title>test</title>
<meta http-equiv="Content-Type"
content="application/xhtml+xml; charset=UTF-8" />
</h:head>
<h:body>
<h:form>
<p:dataTable var="document" value="#{testMB.list}" id="documentTable"
paginator="true" rows="15" paginatorPosition="bottom"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}"
emptyMessage="No documents">
<f:facet name="header">
List of documents
</f:facet>
<p:column headerText="Document">
<h:outputText value="#{document.name}" />
</p:column>
<p:column width="70">
<p:commandButton icon="ui-icon-trash"
oncomplete="deleteDocumentDlg.show()"
style="float:right;width:32px;height:32px;top-margin:0px;bottom-margin:0px;top-padding:0px;bottom-padding:0px;">
<f:setPropertyActionListener value="#{document}"
target="#{testMB.document}" />
</p:commandButton>
<p:commandButton icon="ui-icon-pencil"
oncomplete="editDocumentDlg.show()"
style="float:right;width:32px;height:32px;top-margin:0px;bottom-margin:0px;top-padding:0px;bottom-padding:0px;"
action="#{testMB.saveChangesToDocument}">
<f:setPropertyActionListener value="#{document}"
target="#{testMB.document}" />
</p:commandButton>
</p:column>
</p:dataTable>
<p:commandButton value="New document"
oncomplete="newDocumentDlg.show()" style="float:right" />
<!-- Add new document -dialog -->
<p:dialog widgetVar="newDocumentDlg" id="newDocumentDialog"
header="Add new document" message="Add new document"
hideEffect="fade" showEffect="fade" resizable="true" closable="true"
lazy="true" width="600">
<h:panelGrid columns="3">
<h:outputText value="Name" />
<p:spacer width="10" height="10" />
<p:inputText value="#{testMB.document.name}" width="35"
maxlength="128" />
</h:panelGrid>
<br />
<h:panelGroup layout="block" style="text-align: right">
<p:commandButton value="Save" action="#{testMB.addDocument}"
oncomplete="newDocumentDlg.hide();" update="documentTable">
</p:commandButton>
<p:commandButton value="Cancel" oncomplete="newDocumentDlg.hide();"
action="#{testMB.cancelAction}" />
</h:panelGroup>
</p:dialog>
<!-- Delete document -dialog -->
<p:dialog widgetVar="deleteDocumentDlg" id="deleteDocumentDialog"
header="Delete document" message="Delete document" hideEffect="fade"
showEffect="fade" resizable="false" closable="true" lazy="true">
<h:outputText value="Delete document?" />
<h:panelGroup layout="block" style="text-align: right">
<p:commandButton value="Delete" action="#{testMB.deleteDocument}"
oncomplete="deleteDocumentDlg.hide();" update="documentTable">
</p:commandButton>
<p:commandButton value="Cancel"
oncomplete="deleteDocumentDlg.hide();"
action="#{testMB.cancelAction}" />
</h:panelGroup>
</p:dialog>
<p:dialog widgetVar="editDocumentDlg" id="editDocumentDialog"
header="Edit document" message="Edit document" hideEffect="fade"
showEffect="fade" resizable="true" closable="true" lazy="true"
width="600">
<h:panelGrid columns="3">
<h:outputText value="Name" />
<p:spacer width="10" height="10" />
<p:inputText value="#{testMB.document.name}" width="35"
maxlength="128" />
</h:panelGrid>
<br />
<h:panelGroup layout="block" style="text-align: right">
<p:commandButton value="Save" action="#{testMB.saveChanges}"
oncomplete="editDocumentDlg.hide();" update="documentTable">
</p:commandButton>
<p:commandButton value="Cancel" oncomplete="editDocumentDlg.hide();"
action="#{testMB.cancelAction}" />
</h:panelGroup>
</p:dialog>
</h:form>
</h:body>
</html>
testMB.java
import Document
@ManagedBean
@ViewScoped
public class testMB implements Serializable {
private Document document;
ArrayList<Document> list;
@PostConstruct
public void alusta() {
System.err.println("POSTCONSTRUCT");
document = new Document();
list = new ArrayList();
}
public String addDocument() {
System.err.println("Adding new document: " + document.getName());
list.add(document);
document = new Document();
return null;
}
public String deleteDocument() {
System.err.println("Deleting document: " + document.getName());
list.remove(document);
document = new Document();
return null;
}
public String saveChanges() {
System.err.println("Saving changes to document: " + document.getName());
list.get(list.indexOf(document)).setName(document.getName());
document = new Document();
return null;
}
public String cancelAction() {
document = new Document();
return null;
}
public void setDocument(Document document) {
System.err.println("Document set to: " + document.getName());
this.document = document;
}
public Document getDocument() {
return document;
}
public void setList(ArrayList<Document> list) {
this.list = list;
}
public ArrayList<Document> getList() {
return list;
}
}
文档.java
public class Document {
private String name;
public Document() {
System.out.println("Document's constructor");
name = null;
}
public Document(Document src) {
System.out.println("Document's copy constructor");
this.name = src.name;
}
public void setName(String name) {
System.err.println("Name set to " + name);
this.name = name;
}
public String getName() {
return name;
}
}
非常感谢您的反馈。
【问题讨论】：
标签： java jsf-2 primefaces