情人节后的 JSF PrimeFaces2.0 更完美了！

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       PrimeFaces是最早也最全面的支持JSF2.0的开源库，它显然走在了RichFaces，ICEfaces，MyFaces的前面，2月14日后对JSF2.0的支持更加的完善，增加了几个组件并修补了很多bug，受益于JavaEE6.0的新技术，我们现在可以零配置的在Netbeans6.8或新版本中开发PrimeFaces2.0应用了。

       在这里只需要到 http://www.primefaces.org网站上下载其jar包并添加到项目classpath上即可，相当简单，我们看一下官方的一个使用Tree组建事件特性的完整例子(5分钟内搞定)：

        1.在Netbeans下新建一JavaWeb工程，一切皆默认，并将primefaces-2.0.0.jar添加到类路径中，index页面代码如下

    
        
    
    
        Hello from Facelets
        
            
                
                    
                
                
                    
                
                
                    
                
                
                    
                
            

          
             

                  
        
    

       2.其托管bean代码如下

package controller;

import java.util.logging.Logger;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.inject.Named;
import org.primefaces.event.NodeCollapseEvent;
import org.primefaces.event.NodeExpandEvent;
import org.primefaces.event.NodeSelectEvent;
import org.primefaces.model.TreeNode;

/**
 *
 * @author Bluesky
 */
@ManagedBean
@Named
@RequestScoped
public class DocumentsController {

	private static final Logger logger = Logger.getLogger(DocumentsController.class.getName());

	private TreeNode root;

	private TreeNode selectedDocument;

	public DocumentsController() {
		root = new TreeNode("root", null);

		TreeNode documents = new TreeNode("Documents", root);
		TreeNode pictures = new TreeNode("Pictures", root);
		TreeNode music = new TreeNode("Music", root);

		TreeNode work = new TreeNode("Work", documents);
		TreeNode primefaces = new TreeNode("PrimeFaces", documents);

		//Documents
		TreeNode expenses = new TreeNode("document", "Expenses.doc", work);
		TreeNode resume = new TreeNode("document", "Resume.doc", work);
		TreeNode refdoc = new TreeNode("document", "RefDoc.pages", primefaces);

		//Pictures
		TreeNode barca = new TreeNode("picture", "barcelona.jpg", pictures);
		TreeNode primelogo = new TreeNode("picture", "logo.jpg", pictures);
		TreeNode optimus = new TreeNode("picture", "optimus.png", pictures);

		//Music
		TreeNode turkish = new TreeNode("Turkish", music);

		TreeNode cemKaraca = new TreeNode("Cem Karaca", turkish);
		TreeNode erkinKoray = new TreeNode("Erkin Koray", turkish);
		TreeNode mogollar = new TreeNode("Mogollar", turkish);

		TreeNode nemalacak = new TreeNode("mp3", "Nem Alacak Felek Benim", cemKaraca);
		TreeNode resimdeki = new TreeNode("mp3", "Resimdeki Goz Yaslari", cemKaraca);

		TreeNode copculer = new TreeNode("mp3", "Copculer", erkinKoray);
		TreeNode oylebirgecer = new TreeNode("mp3", "Oyle Bir Gecer", erkinKoray);

		TreeNode toprakana = new TreeNode("mp3", "Toprak Ana", mogollar);
		TreeNode bisiyapmali = new TreeNode("mp3", "Bisi Yapmali", mogollar);
	}

	public TreeNode getRoot() {
		return root;
	}

	public void setRoot(TreeNode root) {
		this.root = root;
	}

	public TreeNode getSelectedDocument() {
		return selectedDocument;
	}

	public void setSelectedDocument(TreeNode selectedDocument) {
		this.selectedDocument = selectedDocument;
	}

	public void onNodeSelect(NodeSelectEvent event) {
		selectedDocument = event.getTreeNode();
		logger.info("Selected:" + selectedDocument.getData());
	}

	public void onNodeExpand(NodeExpandEvent event) {
		String node = event.getTreeNode().getData().toString();
		logger.info("Expanded:" + node);
	}

	public void onNodeCollapse(NodeCollapseEvent event) {
		String node = event.getTreeNode().getData().toString();
		logger.info("Collapsed:" + node);
	}
}

     3.运行就ok了，可以很容易实现左边树导航，中间内容的经典应用。