JSON下载与解析

下面是json的用法代码演示：

/**

     * 下载tuijian.json

     */

    private String initJSON() {

       try {

           URL url = new URL(Constant.TUIJIAN_JSON);

           InputStream is = url.openStream();

           ByteArrayOutputStream baos = new ByteArrayOutputStream();

           byte[] buffer = new byte[1024];

           int len = 0;

           while (-1 != (len = is.read(buffer))) {

              baos.write(buffer, 0, len);

           }

           return baos.toString();

 

       } catch (MalformedURLException e) {

           e.printStackTrace();

       } catch (IOException e) {

           e.printStackTrace();

       }

       return null;

                        }

 

    /**

     * 解析json

     *

     * @param json

     */

    private ArrayList<AlbumInfo> parseJSON(String json) {

       ArrayList<AlbumInfo> albumInfos = new ArrayList<AlbumInfo>();

       try {

           JSONArray jsonArr = new JSONArray(json);

           for (int i = 0; i < jsonArr.length(); i++) {

              JSONObject jsonObj = jsonArr.getJSONObject(i);

              AlbumInfo info = new AlbumInfo();

              info.id = jsonObj.getInt("id");

              info.name = jsonObj.getString("name");

              info.url = jsonObj.getString("url");

              info.image = jsonObj.getString("image");

              info.rating = jsonObj.getString("rating");

              info.artist_name = jsonObj.getString("artist_name");

              albumInfos.add(info);

           }

           return albumInfos;

       } catch (JSONException e) {

           // TODO Auto-generated catch block

           e.printStackTrace();

       }

       return null;