JTree不同节点上的右击弹出不同的快捷菜单
这段时间要实现这个功能，在网上只有点哪啊都一样的 快捷菜单，没能具体实现功能。现在问题解决了写下来和大家一块交流。
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
//import java.awt.event.*;
//import java.awt.event.ActionListener;
import javax.swing.tree.*;
import javax.swing.event.*;
import javax.swing.SwingUtilities;
public class tree1 extends JFrame implements TreeSelectionListener,MouseListener,ItemListener, ActionListener{
JPopupMenu jpopupMenu1 = new JPopupMenu();
JMenuItem jmenuItem1,jmenuItem2,jmenuItem3,jmenuItem4;
JTree tree;
tree1()
{
Container con=getContentPane();
setSize(300,250);
setVisible(true);
jmenuItem1 = new JMenuItem("添加好友");
jmenuItem2 = new JMenuItem("删除好友");
jmenuItem3 = new JMenuItem("查看信息");
jmenuItem4 = new JMenuItem("聊天");
jmenuItem1.addMouseListener(this);
jmenuItem2.addMouseListener(this);
jmenuItem3.addMouseListener(this);
jmenuItem4.addMouseListener(this);
jpopupMenu1.add(jmenuItem1);
jpopupMenu1.add(jmenuItem2);
jpopupMenu1.add(jmenuItem3);
jpopupMenu1.add(jmenuItem4);
jmenuItem1.addActionListener(this);
jmenuItem2.addActionListener(this);
jmenuItem3.addActionListener(this);
jmenuItem4.addActionListener(this);
//Container con1=getContentPane();
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
DefaultMutableTreeNode root=new DefaultMutableTreeNode("我的好友");
DefaultMutableTreeNode t1=new DefaultMutableTreeNode("大学同学");
DefaultMutableTreeNode t2=new DefaultMutableTreeNode("高中同学");
DefaultMutableTreeNode t3=new DefaultMutableTreeNode("初中同学");
final DefaultMutableTreeNode t1_1=new DefaultMutableTreeNode("lkj");
final DefaultMutableTreeNode t1_2=new DefaultMutableTreeNode("李四");
DefaultMutableTreeNode t1_3=new DefaultMutableTreeNode("王五");
DefaultMutableTreeNode t2_1=new DefaultMutableTreeNode("dfsa");
DefaultMutableTreeNode t2_2=new DefaultMutableTreeNode("ggasd");
DefaultMutableTreeNode t2_3=new DefaultMutableTreeNode("adf");
DefaultMutableTreeNode t3_1=new DefaultMutableTreeNode("dsfgre");
DefaultMutableTreeNode t3_2=new DefaultMutableTreeNode("sdfgrewr");
DefaultMutableTreeNode t3_3=new DefaultMutableTreeNode("er");
root.add(t1);
root.add(t2);
root.add(t3);
t1.add(t1_1);
t1.add(t1_2);
t1.add(t1_3);
t2.add(t2_1);
t2.add(t2_2);
t2.add(t2_3);
t3.add(t3_1);
t3.add(t3_2);
t3.add(t3_3);
tree=new JTree(root);
JScrollPane scrollpane=new JScrollPane(tree);
con.add(scrollpane);
tree.addTreeSelectionListener(this);
tree.add(jpopupMenu1);
//实验
tree.addMouseListener(new MouseAdapter()
{
final TreePath visiblePath = new TreePath(getTreeModel().getPathToRoot(t1_2));
public void mousePressed(MouseEvent event)
{
int selRow = tree.getRowForLocation(event.getX(), event.getY());
TreePath selPath = tree.getPathForLocation(event.getX(), event.getY());
if (selPath==null){
}
else if(selPath.equals(visiblePath)) {
if(((event.getModifiers() & InputEvent.BUTTON3_MASK)!=0) && (tree.getSelectionCount()>0))
{
showmenu(event.getX(),event.getY());
}
}
}
}
);
}
private DefaultTreeModel getTreeModel(){
return (DefaultTreeModel)tree.getModel();
}
public void showmenu(int x,int y){
jpopupMenu1.show(tree,x,y);
}
public void itemStateChanged(ItemEvent e)
{
}
public void valueChanged(TreeSelectionEvent e)
{
}
public void actionPerformed(ActionEvent e)
{
System.out.println("dfa");
if(e.getSource()==jmenuItem1)
{
System.out.println("you click 1");
}
else if(e.getSource()==jmenuItem4)
{
System.out.println("you click 4");
}
else if(e.getSource()==jmenuItem3)
{
System.out.println("you click 3");
}
}
public void mousePressed(MouseEvent e) {
/*
int mods=e.getModifiers();
// 鼠标右键
if((mods&InputEvent.BUTTON3_MASK)!=0){
// 弹出菜单
jpopupMenu1.show(this,e.getX(),e.getY());
*/
//if(e.getSource()==jmenuItem11)
}
public void mouseEntered(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e){
System.out.println("###################");
}
//void menuItem1_actionPerformed(ActionEvent e) {}
// 菜单事件
public static void main(String args[])
{
tree1 m=new tree1();
m.validate();
//System.out.println("dfa");
}
}
上面的代码参考网上的，我只是把他的一些代码改了一下，才实现了现在的功能。原来他点哪都出现相同的快捷菜单