通过URL建立连接 然后解析json

            URL url = new URL(strUrl);

            BufferedReader br = new BufferedReader(new InputStreamReader(url

            .openStream(), "UTF-8"));

            String s = "";

            StringBuffer sb = new StringBuffer("");

            while ((s = br.readLine()) != null) {

               sb.append(s);

            }

picObj = new JSONObject(homePicContent);

String picData = picObj.getString("data");

for(int i=0;i<picSize;i++){

                JSONObject picJsonObj = picjsonArray.getJSONObject(i);

                HomePicDto homePicDto = new HomePicDto();

                homePicDto.setPicPath(picJsonObj.get("picPath").toString());

                homePicDto.setLink(picJsonObj.get("link").toString());

                homePicDtoList.add(homePicDto);

            }