window系统资源管理树

发现失业后都快成了义工了，常常有朋友叫帮忙，又不给工资！！哎....
昨天叫帮实现一个资源树，觉得挺有意思的，也顺便玩一下swing,学java到现在没玩过，惭愧。打开本core java ,翻了几页，于是就开干了..

package tree;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;

public class Myframe extends JFrame {
	
	private JScrollPane js ;
	
	private JTree jt;
	
	private TreeNode mt;
	
	public Myframe() {
		initFrame();
	}

	/**
	 * 初始化用的...
	 *
	 */
	public void initFrame() {
		super.setSize(200, 600);
		super.setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		this.js = new JScrollPane();
		this.mt = new TreeNode();
		this.jt = new JTree(this.mt.createRootNode(),true);
		TreeAction ta = new TreeAction(this.jt);
		
		this.mt.setJt(this.jt);
		ta.setMt(this.mt);
		this.jt.addTreeExpansionListener(ta);
		
		
		this.js.setViewportView(this.jt);
		this.add(this.js);
	}

	public JScrollPane getJs() {
		return js;
	}

	public void setJs(JScrollPane js) {
		this.js = js;
	}

	public JTree getJt() {
		return jt;
	}

	public void setJt(JTree jt) {
		this.jt = jt;
	}

	public TreeNode getMt() {
		return mt;
	}

	public void setMt(TreeNode mt) {
		this.mt = mt;
	}

}

一下是事件监听器类

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package tree;

import java.io.File;

import javax.swing.JTree;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;

/**
 *
 * @author chen
 */
public class TreeAction implements  TreeExpansionListener {
	
	private TreeNode mt ;
	
	private JTree jt;
	
	public TreeAction(JTree jtree){
		this.jt = jtree;
	}
    
    //当前被选择的路径
    private TreePath selectPath;
    
    //当前被选择的节点
    private DefaultMutableTreeNode selectNode;

    public void treeExpanded(TreeExpansionEvent event) {
        //获取当前选择的节点对象
        this.selectNode = (DefaultMutableTreeNode) event.getPath().getLastPathComponent();
        
        //如果是根节点，则直接返回
        if(this.selectNode.isRoot()){
            return;
        }
        
        //回去节点路径
        this.selectPath = event.getPath();
        String path = event.getPath().toString();
        
        //把节点路径转为对应的系统文件的绝对路径
        path = Tool.reperse(path);
        
        if(this.jt.isExpanded(this.selectPath)){
        	
            this.mt.addTreeNode(this.selectNode,new File(path));
        }
        
    }

    public void treeCollapsed(TreeExpansionEvent event) {
        //获取当前选择的节点对象
        this.selectNode = (DefaultMutableTreeNode) event.getPath().getLastPathComponent();
        
        if(this.selectNode.isRoot()){
            return;
        }
        
        //删除当前节点下的所有子节点，
        this.selectNode.removeAllChildren();
        this.selectPath = event.getPath();
        if(!jt.isExpanded(this.selectPath)){
                //用没有子节点的selectNode更新当前选择的节点
                ((DefaultTreeModel)jt.getModel()).reload(this.selectNode);
        }
    }

	public JTree getJt() {
		return jt;
	}

	public void setJt(JTree jt) {
		this.jt = jt;
	}

	public TreeNode getMt() {
		return mt;
	}

	public void setMt(TreeNode mt) {
		this.mt = mt;
	}

}

这个类是用来设置节点的

package tree;

import java.io.File;

import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;


public class TreeNode {
	
	private String ROOT_NAME = "我的电脑";
	
	private JTree jt;
	
	private DefaultMutableTreeNode treeNode;

	/**
	 * 根据系统的盘符数来初始化树根。
	 * @return
	 */
	public DefaultMutableTreeNode createRootNode(){
		File dir = new File(".");
		DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode(ROOT_NAME);
		
		for(int i = 0; i < dir.listRoots().length; i++){
            if(dir.listRoots()[i].isDirectory()){
                String rootPath = dir.listRoots()[i].getPath();
                this.treeNode = new DefaultMutableTreeNode(rootPath);
                rootNode.add(this.treeNode);
                this.treeNode = null;
            }
        }
		
		return rootNode;
	}
	
	
	/**
	 * 根据当前节点所对应目录下的所有子目录，创建对应的子节点
	 * @param node
	 * @param dir
	 * @return
	 */
	public void addTreeNode(DefaultMutableTreeNode node,File dir){
		if(node == null || dir == null)return;
		if(!dir.isDirectory())return;
		
        if(!node.isRoot()){
           //获取当前目录下的所有文件的绝对路径
           File file[] = dir.listFiles();
           
           for(int i = 0; i < file.length; i ++){
               
               //只要文件夹，并且不能是隐藏文件夹
               if(file[i].isDirectory() && !file[i].isHidden()){
                   
                   //为文件夹创建对应的子
                   this.treeNode = new DefaultMutableTreeNode(dir.list()[i]);
                   
                   //把子节点加载到当前所选择的节点
                   ((DefaultTreeModel)this.jt.getModel()).insertNodeInto(treeNode, node, node.getChildCount());
                   
                   this.treeNode = null;
               }
           }
        }
    }



	public JTree getJt() {
		return jt;
	}

	public void setJt(JTree jt) {
		this.jt = jt;
	}
	
	public DefaultMutableTreeNode getTreeNode() {
		return treeNode;
	}

	public void setTreeNode(DefaultMutableTreeNode treeNode) {
		this.treeNode = treeNode;
	}


}

这个不知道怎么描述，先放着吧

package tree;

/**
 *
 * @author chen
 */
public class Tool {
    
    public static String reperse(String str){
        str = str.replace("[我的电脑, ","");
        str = str.replace("]","");
        str = str.replace(", ","\\");
        str = str.replace("\\\\","\\");
        return str;
    } 

}

这个是测试的

package tree;

import java.io.File;

public class MyMain {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Myframe mf = new Myframe();
		mf.setVisible(true);
	}

}

这里只显示目录，