Tích hợp thẻ cào

HttpURLConnectionExample http = new HttpURLConnectionExample(); // Tao chu ky String chuoiParam = accesskey=6fe7a9a25c4e30e731c0bc1d18e9da28&serial=123456789&pin=12345678&type=VTT&privatekey=7dbf0ee2739fa53d41b74424be99ec2c String signature = MD5(chuoiParam); http.sendPost(access_key, type, pin, serial, signature); } // HTTP POST request privatevoid sendPost(String access_key, String type, String pin, String serial, String signature) throws Exception { String url = "http://sms.vn/card-charging-api URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); // add reuqest header con.setRequestMethod("POST"); String urlParameters = "accesskey="+access_key+"&type="+type+"&pin="+pin+"&serial="+serial+"&signature="+signature; // Send post request con.setDoOutput(true); DataOutputStream wr = new DataOutputStream(con.getOutputStream()); wr.writeBytes(urlParameters); wr.flush(); wr.close(); int responseCode = con.getResponseCode(); System.out.println("\nSending 'POST' request to URL : " + url); System.out.println("Post parameters : " + urlParameters); System.out.println("Response Code : " + responseCode); BufferedReader in = new BufferedReader(new InputStreamReader(con .getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); // print result