public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //初始化参数
            Context ctx=null;
            QueueSender queueSender=null;
            QueueSession queueSession=null;
            QueueConnection queueConn=null;
            try {
                //获得上下文
                ctx = new InitialContext();
                //获得QueueConnectionFactory对象
                QueueConnectionFactory qcfact=(QueueConnectionFactory)ctx.lookup("ConnectionFactory");
                //获得Queue对象
                Queue queue=(Queue)ctx.lookup("queue/myQueue");
                
                try {
                    //获得QueueConnection对象  由QueueConnectionFactory生成
                    queueConn = qcfact.createQueueConnection();
                    //获得queueSession对象  由QueueConnection对象生成
                    queueSession=queueConn.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
                    //获得QueueSender对象 由queueSession对象生成
                    queueSender=queueSession.createSender(queue);
                    //生产TextMessage 并且把TextMessage对象加入到queueSession中
                    TextMessage textMessage=queueSession.createTextMessage();
                    textMessage.setText("this is default message..");
                    //发送
                    queueSender.send(textMessage);
                    
                } catch (JMSException e) {
                    e.printStackTrace();
                }
            } catch (NamingException e) {
                e.printStackTrace();
            }finally{
                //判断是否为空
                if(queueSender!=null&&queueSession!=null&&queueConn!=null){
                    try {
                        //管理所有连接
                        queueSender.close();
                        queueSession.close();
                        queueConn.close();
                    } catch (JMSException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    
                }
            }
            
        
    }
    /**
     * The doPost method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to post.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doGet(request, response);
    }
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