@ResponseBody

    @RequestMapping(value = {"K12", "12"})

    public String refurbishLights(KdDynamic kdDynamic, HttpServletRequest request, HttpServletResponse response, Model model) {

        List<KdDynamic> kdDynamics=kdDynamicService.findList(kdDynamic);

        Collections.sort(kdDynamics, new Comparator<KdDynamic>(){

            /*

             * int compare(KdDynamic kd1, KdDynamic kd2) 返回一个基本类型的整型，

             * 返回负数表示：kd2 小于kd1，

             * 返回0 表示：kd1和kd2相等，

             * 返回正数表示：kd2大于kd1

             */

            public int compare(KdDynamic kd1, KdDynamic kd2) {

                //按照kd1的更新时间进行降序排列

                if(kd2.getDtime().before(kd1.getDtime())){

                    return -1;

                }

                if(kd1.getDtime() == kd1.getDtime()){

                	return 0;

                }

                return 1;

            }

        });

		String jsonStr = null;

		JSONArray array = new JSONArray();

		/* Json格式的数组形式 */

		JSONObject obj;

		/* json格式的单个对象形式 */

		for (int i = 0; i < kdDynamics.size(); i++ )

		{

		    obj = new JSONObject();

		    obj.put( "dnum", kdDynamics.get(i).getDnum() );

		    obj.put( "dtime", df.format(kdDynamics.get(i).getDtime() ));

		    /* json通过put方式以key-value形式填充 */

		    obj.put( "dcontext", kdDynamics.get(i).getDcontext() );

		    array.put(obj);

		    /* 将JSONObject添加入JSONArray */

		}

		model.addAttribute("index", "ddzt");

		model.addAttribute( "kdDynamics", kdDynamics );

		model.addAttribute( "kdDynamicsJSON", array.toString());

		System.out.println("====================================");

		System.out.println(array.toString());

		System.out.println("====================================");

		return array.toString();

    }