我使用primefaces创建一个多标签页。
如果用户点击动态添加标签的添加按钮，则页面可能包含添加按钮。
在该动态标签中，我使用复选框选项附上树表。
在此页面中，每个值都存储在bean列表中，这是tabview的值。
问题是：
我得到了＆＃34; selectionNode＆＃34;第一个选项卡中的值，但无法在其他选项卡中获取值。在日志中，其他选项卡中的选择节点值为空。我尝试了改变会话和视图范围的技术。但失败了。
我附上了以下所有代码。
请帮助我。
的index.xhtml
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<h:head>
<title>
Dynamic View in List
</title>
</h:head>
<h:body>
<f:event listener="#{DynamicTab.initializePageAttributes}" type="preRenderComponent"/>
<h:form id="dynamicFormId">
<p:panel id="mainPanelId" widgetVar="mainPanelId">
<p:commandButton id="addButtonId" icon="ui-icon-circle-plus" action="#{DynamicTab.addButtonAction}"
update="mainPanelId" rendered="#{DynamicTab.addButtonRendered}"/>
<p:growl id="msgs" showDetail="true" escape="false" />
<p:tabView id="tabViewId" activeIndex="#{DynamicTab.activeIndex}" value="#{DynamicTab.sampleList}" var="useCase"
dynamic="true" >
<p:ajax event="tabChange" listener="#{DynamicTab.onTabChange}" update="@([id$=mainPanelId])"/>
<p:ajax event="tabClose" listener="#{DynamicTab.onTabClose}" update="@([id$=mainPanelId])"/>
<p:tab id="tabId" closable="true" title="#{useCase.sstId}">
<p:panel id="sampleId">
<h:outputText value="SST Id: "/> <h:outputText value="#{useCase.sstLabel}"/>
<p:commandButton id="uploadButtonId" icon="ui-icon-circle-arrow-n" actionListener="#{DynamicTab.uploadButtonAction}"
update="@([id$=mainPanelId])"/>
<p:treeTable value="#{useCase.rootNode}"
var="document" selectionMode="checkbox" selection="#{useCase.selectedNodes}" >
<f:facet name="header">
Tab View
</f:facet>
<p:column headerText="Name">
<h:outputText value="#{document.name}" />
</p:column>
<p:column headerText="Size">
<h:outputText value="#{document.size}" />
</p:column>
<p:column headerText="Type">
<h:outputText value="#{document.type}" />
</p:column>
</p:treeTable>
</p:panel>
</p:tab>
</p:tabView>
</p:panel>
</h:form>
</h:body>
</ui:composition>
点击添加/上传按钮操作我使用下面的Java代码：
DynamicTab.java
public class DynamicTab
{
private HtmlForm initForm;
private int count = 0;
private Logger logger = Logger.getLogger(getClass());
private List<DynamicBean> sampleList = new ArrayList<DynamicBean>();
private Short activeIndex;
private boolean addButtonRendered;
private TreeNode root;
public void initializePageAttributes()
{
logger.info("Enter inside initializepage");
count = 0;
if (sampleList != null && !sampleList.isEmpty())
{
sampleList.clear();
}
addButtonRendered = true;
}
private void addValues()
{
formTree();
DynamicBean dynamic = new DynamicBean();
dynamic.setSstId("SST" + count);
dynamic.setSstLabel("SST0" + count);
dynamic.setTabIndex(String.valueOf(count));
dynamic.setActiveIndex(activeIndex);
dynamic.setRootNode(root);
dynamic.setSelectedNodes(null);
sampleList.add(dynamic);
}
private void formTree()
{
root = new CheckboxTreeNode(new Document("Files", "-", "Folder"), null);
TreeNode documents = new CheckboxTreeNode(new Document("Documents", "-", "Folder"), root);
TreeNode pictures = new CheckboxTreeNode(new Document("Pictures", "-", "Folder"), root);
TreeNode movies = new CheckboxTreeNode(new Document("Movies", "-", "Folder"), root);
TreeNode work = new CheckboxTreeNode(new Document("Work", "-", "Folder"), documents);
TreeNode primefaces = new CheckboxTreeNode(new Document("PrimeFaces", "-", "Folder"), documents);
//Documents
TreeNode expenses = new CheckboxTreeNode("document", new Document("Expenses.doc", "30 KB", "Word Document"), work);
TreeNode resume = new CheckboxTreeNode("document", new Document("Resume.doc", "10 KB", "Word Document"), work);
TreeNode refdoc = new CheckboxTreeNode("document", new Document("RefDoc.pages", "40 KB", "Pages Document"), primefaces);
//Pictures
TreeNode barca = new CheckboxTreeNode("picture", new Document("barcelona.jpg", "30 KB", "JPEG Image"), pictures);
TreeNode primelogo = new CheckboxTreeNode("picture", new Document("logo.jpg", "45 KB", "JPEG Image"), pictures);
TreeNode optimus = new CheckboxTreeNode("picture", new Document("optimusprime.png", "96 KB", "PNG Image"), pictures);
//Movies
TreeNode pacino = new CheckboxTreeNode(new Document("Al Pacino", "-", "Folder"), movies);
TreeNode deniro = new CheckboxTreeNode(new Document("Robert De Niro", "-", "Folder"), movies);
TreeNode scarface = new CheckboxTreeNode("mp3", new Document("Scarface", "15 GB", "Movie File"), pacino);
TreeNode carlitosWay = new CheckboxTreeNode("mp3", new Document("Carlitos' Way", "24 GB", "Movie File"), pacino);
TreeNode goodfellas = new CheckboxTreeNode("mp3", new Document("Goodfellas", "23 GB", "Movie File"), deniro);
TreeNode untouchables = new CheckboxTreeNode("mp3", new Document("Untouchables", "17 GB", "Movie File"), deniro);
}
public String addButtonAction()
{
addButtonRendered = sampleList.size() < 4;
count = count + 1;
addValues();
return null;
}
public void onTabChange(TabChangeEvent event)
{
FacesMessage msg = new FacesMessage("Tab Changed", "Active Tab: " + event.getTab().getTitle());
FacesContext.getCurrentInstance().addMessage(null, msg);
}
public void onTabClose(TabCloseEvent event)
{
FacesMessage msg = new FacesMessage("Tab Closed", "Closed tab: " + event.getTab().getTitle());
FacesContext.getCurrentInstance().addMessage(null, msg);
TabView tabView = (TabView) event.getComponent();
addButtonRendered = true;
List<DynamicBean> tempBeanList = new ArrayList<DynamicBean>();
tempBeanList.addAll(sampleList);
for (DynamicBean dynamicBean : tempBeanList)
{
if (dynamicBean.getSstId().equalsIgnoreCase(event.getTab().getTitle()))
{
sampleList.remove(dynamicBean);
}
}
}
public String uploadButtonAction()
{
DynamicBean dynamic = sampleList.get(activeIndex);
if (dynamic != null)
{
if (dynamic.getSelectedNodes() != null)
{
for (TreeNode subTree : dynamic.getSelectedNodes())
{
Document doc = (Document) subTree.getData();
logger.info(" Name: " + doc.getName());
logger.info(" Type: " + doc.getType());
logger.info(" Size: " + doc.getSize());
}
}
else
{
logger.info("The Selected node is null");
}
}
else
{
logger.info("Dynamic is null");
}
return null;
}
public void displaySelectedMultiple(TreeNode[] nodes)
{
if (nodes != null && nodes.length > 0)
{
StringBuilder builder = new StringBuilder();
for (TreeNode node : nodes)
{
builder.append(node.getData().toString());
builder.append("<br />");
}
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Selected", builder.toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
}
/**
* @return the initForm
*/
public HtmlForm getInitForm()
{
return initForm;
}
/**
* @param initForm the initForm to set
*/
public void setInitForm(HtmlForm initForm)
{
this.initForm = initForm;
}
/**
* @return the sampleList
*/
public List<DynamicBean> getSampleList()
{
return sampleList;
}
/**
* @param sampleList the sampleList to set
*/
public void setSampleList(List<DynamicBean> sampleList)
{
this.sampleList = sampleList;
}
/**
* @return the activeIndex
*/
public Short getActiveIndex()
{
return activeIndex;
}
/**
* @param activeIndex the activeIndex to set
*/
public void setActiveIndex(Short activeIndex)
{
this.activeIndex = activeIndex;
}
/**
* @return the addButtonRendered
*/
public boolean isAddButtonRendered()
{
return addButtonRendered;
}
/**
* @param addButtonRendered the addButtonRendered to set
*/
public void setAddButtonRendered(boolean addButtonRendered)
{
this.addButtonRendered = addButtonRendered;
}
}
Bean类动态Bean包含以下变量及其getter / setter：
DynamicBean.Java
public class DynamicBean
{
private String sstId;
private String sstLabel;
private String tabIndex;
private String pagePath;
private Short activeIndex;
private TreeNode rootNode;
private TreeNode[] selectedNodes;
}
树表Bean类：
Document.Java
public class Document implements Serializable, Comparable<Document>
{
private String name;
private String size;
private String type;
public Document(String name, String size, String type)
{
this.name = name;
this.size = size;
this.type = type;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public String getSize()
{
return size;
}
public void setSize(String size)
{
this.size = size;
}
public String getType()
{
return type;
}
public void setType(String type)
{
this.type = type;
}
//Eclipse Generated hashCode and equals
@Override
public int hashCode()
{
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + ((size == null) ? 0 : size.hashCode());
result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
{
return true;
}
if (obj == null)
{
return false;
}
if (getClass() != obj.getClass())
{
return false;
}
Document other = (Document) obj;
if (name == null)
{
if (other.name != null)
{
return false;
}
}
else if (!name.equals(other.name))
{
return false;
}
if (size == null)
{
if (other.size != null)
{
return false;
}
}
else if (!size.equals(other.size))
{
return false;
}
if (type == null)
{
if (other.type != null)
{
return false;
}
}
else if (!type.equals(other.type))
{
return false;
}
return true;
}
@Override
public String toString()
{
return name;
}
public int compareTo(Document document)
{
return this.getName().compareTo(document.getName());
}
}