我做了个邮件菜单,但是添加事件后点击没有反应,下面是小弟的代码,请各位大侠帮忙看看,万分感激public class QcRstrnMenu extends JPopupMenu{    private static final long serialVersionUID = 1L;
    private final Logger logger = BLoggerFactory.getLogger(QcRstrnMenu.class);
    private QcRstrnDataVO qcRstrnData = null;
    private JMenuItem jMI_view = new JMenuItem("查看");    public QcRstrnMenu() {
        super();
        if (logger.isDebugEnabled())
            logger.debug("QcRstrnMenu======QcRstrnMenu=====after super===");
        addListener();
        if (logger.isDebugEnabled())
            logger.debug("QcRstrnMenu======QcRstrnMenu========");
    }    private void addListener() {
        addViewListner();
    }    private void addViewListner() {
        logger.debug("this.getJMI_view()this.getJMI_view(): " + this.getJMI_view().hashCode());
        logger.debug("this.getJMI_view()this.getJMI_view(): " + this.getJMI_view().hashCode());
        jMI_view.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                System.out.println("has action performed");
            }
        });
    }
}问题说明:邮件菜单“查看”弹出来了,但是点击之后,“has action performed”这个没有输出,就是说没有响应事件