public static void mapToJSONObject(){

         Map<String, Object> map = new HashMap<String,Object>();

         map.put("id", 1);

         map.put("name", "杨文培");

         map.put("sex", null);

         map.put("age", 23);

         map.put("birthday", "1993-01-23");

         List<String> list = new ArrayList<String>();

         list.add("篮球");

         list.add("乒乓球");

         list.add("羽毛球");

         map.put("hobby", list);

         map.put("boo", false);

         JSONObject jsonObject = JSONObject.fromObject(map);

         System.out.println("map.toString()="+map.toString());

         System.out.println("jsonObject.toString()="+jsonObject.toString());

         try{

             Student student = (Student) JSONObject.toBean(jsonObject,Student.class);

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

         }catch(ClassCastException exception){

             System.err.println("exception="+exception.getMessage());

         }

     }