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;
    }