public String getJson(){

        String jsonString = "{\"FLAG\":\"flag\",\"MESSAGE\":\"SUCCESS\",\"name\":[{\"name\":\"jack \"},{\"name\":\"lucy\"}]}";//json字符串

        try {

            JSONObject result = new JSONObject(jsonstring);//转换为JSONObject

            int num = result.length();

            JSONArray nameList = result.getJSONArray("name");//获取JSONArray

            int length = nameList.length();

            String aa = "";

            for(int i = 0; i < length; i++){//遍历JSONArray

                Log.d("debugTest",Integer.toString(i));

                JSONObject oj = nameList.getJSONObject(i);

                aa = aa + oj.getString("name")+"|";

                

            }

            Iterator<?> it = result.keys();

            String aa2 = "";

            String bb2 = null;

            while(it.hasNext()){//遍历JSONObject

                bb2 = (String) it.next().toString();

                aa2 = aa2 + result.getString(bb2);

                

            }

            return aa;

        } catch (JSONException e) {

            throw new RuntimeException(e);

        }

    }