Android Json解析

1、

public static final String ROOT_URL="http://xxx.xxx.xxx.xxx:xxxx/phone";



public static final String ACTION_GET_STORE_RECOMMEND="/store/getlist.aspx";//获得推荐商家

2、使用FinalHttp  形式很简单，但只能传键值对格式的参数给服务器

public static void getStoreRecommend() {

        FinalHttp fh = new FinalHttp();

        String url = ROOT_URL + ACTION_GET_STORE_RECOMMEND;

        

        AjaxParams params = new AjaxParams();        

        params.put("page", "1");
        params..put("cityid", "35");

      





          fh.post(url,params, new AjaxCallBack<Object>(){



                    @Override

                    public void onLoading(long count, long current) {

                        // TODO Auto-generated method stub

                        super.onLoading(count, current);

                    }



                    @Override

                    public void onSuccess(Object t) {

                        // TODO Auto-generated method stub

                        super.onSuccess(t);



                        Log.e("getStoreRecommend返回结果",t.toString());



　　　　　　　       　   //将json串转化为对象list

　　                     List<StoreRecommend> list = JsonParser.ParserStoreRecommed(t.toString());

                    }

         });



 }

 

3、如果传Json串给服务器  需要另外一种方法

public static void getStoreRecommend() {

        try {

            //创建连接

            URL url = new URL(ROOT_URL + ACTION_GET_STORE_RECOMMEND);

            HttpURLConnection connection = (HttpURLConnection) url

                    .openConnection();

            connection.setDoOutput(true);

            connection.setDoInput(true);

            connection.setRequestMethod("POST");

            connection.setUseCaches(false);

            connection.setInstanceFollowRedirects(true);

            connection.setRequestProperty("Content-Type",

                    "application/x-www-form-urlencoded");

            connection.connect();

    

    



            //POST请求

            DataOutputStream out = new DataOutputStream(

                    connection.getOutputStream());

            JSONObject jsonobg = new JSONObject();

            jsonobg.put("page", "1");//输入查看的页数

            jsonobg.put("cityid", "35");//输入当前城市id



            //转化成json串

            out.writeBytes(jsonobg.toString());

            out.flush();

            out.close();



    

            //读取响应

            BufferedReader reader = new BufferedReader(new InputStreamReader(

                    connection.getInputStream()));

            String lines;

            StringBuffer sb = new StringBuffer("");

            while ((lines = reader.readLine()) != null) {

                lines = new String(lines.getBytes(), "utf-8");

                sb.append(lines);

            }

            System.out.println(sb);

            reader.close();

            // 断开连接

            connection.disconnect();

        } catch (MalformedURLException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (UnsupportedEncodingException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (JSONException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

 

 

 

4、将传回的json串 转化成对象

public static List<StoreRecommend> ParserStoreRecommed(String str) {



        try {

            JSONObject jobg = new JSONObject(str);

            String msg = jobg.getString(code);

            

            if ("-99".equals(msg)) {

                errorDetail = jobg.getString(error);

            }else if("-1".equals(msg)){

                //参数错误

            }else if("-2".equals(msg)){

                //为空

            }else if ("0".equals(msg)) {

                String result = jobg.getString("Stores");

                Gson gson = new Gson();



　　　　     　　//列表型

                List<StoreRecommend> ps = gson.fromJson(result, new TypeToken<List<StoreRecommend>>() {

                }.getType());



　　　　　     　//单个对象

　　　　　　     //StoreRecommend ps = gson.fromJson(result, new StoreRecommend() {

                //}.getType());



                return ps;

                

            }

        } catch (JSONException e) {

            e.printStackTrace();

            Log.e("ParserStoreRecommed", "error");

        }

        return null;

    }