小编bar*_*on5的帖子

我在Glassfish 3上运行Primefaces 3.2和JSF 2.0.

我已经尝试了很多,以编程方式从托管bean中设置所选节点.这包括设置所选节点,如下所示:

public void setSelectedTreeNode(String name) {
TreeNode root = treeBean.getRoot();
List<TreeNode> tree = root.getChildren();
for(TreeNode node:tree) {
  if(node.getData().toString().contains(name)) {
    System.out.println("found the node to select");
    treeBean.setSelectedNode(node);
    break;
  }
}
RequestContext context = RequestContext.getCurrentInstance(); 
context.update(":navForm:treeSingle");
}

"找到要选择的节点"将在终端中打印,但未在网页的树中选择节点.

树是这样的:

<h:form id="navForm">
<p:tree id="treeSingle" value="#{treeBean.root}" var="node"  
       selectionMode="single" styleClass="treeStyle" 
       selection="#{treeBean.selectedNode}"
       cache="false"
       >  
   <p:ajax event="select" listener="#{treeBean.onNodeSelect}" update=":mainForm" />
   <p:treeNode>  
       <h:outputText value="#{node}" escape="false" />  
   </p:treeNode>  

编辑:TreeBean是这样构建的:

@ManagedBean
@SessionScoped    
public class TreeBean implements Serializable {  

private TreeNode root;  

private TreeNode selectedNode;  

public TreeBean() { …

我正在使用Primefaces 3.2和JSF 2.0.

我正在使用

<p:commandButton action="#{myBackingBean.action}" value="press me" />

这对于ajaxStatus:

<p:ajaxStatus onstart="statusDialog.show();"
      onsuccess="statusDialog.hide();"
      rendered="#{myBackingBean.ajaxStatusRendered}"
      id="ajaxStatusField" />

    <p:dialog modal="true" widgetVar="statusDialog"
      header="#{myBackingBean.ajaxStatusHeader}"
      rendered="#{myBackingBean.ajaxStatusRendered}" id="ajaxPanel"
      draggable="false" closable="false">
      <p:graphicImage value="./images/ajaxloader.gif" />
    </p:dialog>

我在同一页面上也有很多其他的primefaces组件,但我只想在按下这个特定按钮时渲染p:ajaxStatus.对此有什么好的解决方案？ajaxStatus渲染每个ajax事件..