commons-codec-1.6.jar:
DigestUtils.md5Hex(String str);
httpclient-4.2.2.jar:
HttpClient client=new DefaultHttpClient();
HttpGet get=new HttpGet(URL);
httpcore-4.2.2.jar:
HttpResponse response=client.execute(get);
EntityUtils.toString(response.getEntity());
org.json.jar:
JSONObject obj=new JSONObject(String str);
Object value=obj.get(key);
JSONArray jsonArr=obj.getJSONArray(key);