Extjs 4.1怎么只给树的叶节点添加监听器，

var store = Ext.create('Ext.data.TreeStore', {

    root : {

        children : [{

            text : '父叶',

            children : [{

                text : '子叶',

                id : 'A',

                leaf : true  // 在你的叶节点添加 leaf 属性

            }]

        }]

    }

})

// TreePanel 省略

treePanel.on('itemclick', function(view, record) {    

    if (record.get('leaf')) {

        //你的逻辑

    }

})

给叶节点设置监听的Java程序如下:

package Tree.java

import java.awt.Container

import javax.swing.JFrame

import javax.swing.JScrollPane

import javax.swing.JTree

import javax.swing.event.TreeSelectionEvent

import javax.swing.event.TreeSelectionListener

import javax.swing.tree.DefaultMutableTreeNode

public class TreeWin extends JFrame implements TreeSelectionListener{

JTree tree

TreeWin()

{

setSize(300,250)

setVisible(true)

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)

Container con = getContentPane()

DefaultMutableTreeNode root = new DefaultMutableTreeNode("根结点")

DefaultMutableTreeNode t1 = new DefaultMutableTreeNode("结点")

DefaultMutableTreeNode t2 = new DefaultMutableTreeNode("结点")

DefaultMutableTreeNode t1_1 = new DefaultMutableTreeNode("叶结点")

DefaultMutableTreeNode t1_2 = new DefaultMutableTreeNode("叶结点")

root.add(t1)

root.add(t2)

t1.add(t1_1)

t2.add(t1_2)

tree= new JTree(root) //创建根为root的树

tree.addTreeSelectionListener(this)//给整个树加选择监听

JScrollPane scrollPane = new JScrollPane(tree)

con.add(scrollPane)

}

public static void main(String[] args) {

TreeWin win = new TreeWin()

win.setVisible(true)

}

public void valueChanged(TreeSelectionEvent tse) {

DefaultMutableTreeNode selectionNode=(DefaultMutableTreeNode)tree.getLastSelectedPathComponent()

if(selectionNode.isLeaf()){ //叶子节点的监听

System.out.println(selectionNode.toString())

}

}

}

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