Swing JDialog监听回车键

   在做项目时，发现在JDialog中，直接通过addKeyListener来监听回车键不起作用，无法监听到回车键，后面在网上查了些资料，终于解决了。方法如下：

   KeyStroke stroke = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0);

   this.getRootPane().registerKeyboardAction(new ActionListener() {

    @Override
    public void actionPerformed(ActionEvent e) {
     // TODO Auto-generated method stub
　//do something
  }
  }, stroke, JComponent.WHEN_IN_FOCUSED_WINDOW);

或者重写createRootPane方法，在方法里面注册keyboardaction

@Override
    protected JRootPane createRootPane(){
        KeyStroke  stroke = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE,0);
        JRootPane rootPane = new JRootPane();
        rootPane.registerKeyboardAction(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                escapeKeyProc();
            }
        },stroke, JComponent.WHEN_IN_FOCUSED_WINDOW);

        return rootPane;
    }