vsS2VSvE

1try {
2	int type = 1;			        // Loại thẻ Viettel
3	String serial = "08476107812";	// Seri thẻ cào
4	String code = "0072919362926";	// Mã thẻ cào
5	int amount = 100000;            // Mệnh giá thẻ
6	
7	// ID tài khoản của bạn
8	String merchant_id = "04a23a03-ce2f-49ae-8a1e-379aea66f8ee";
9			
10	// Mã bí mật
11	String secret_key = "4b380bf3872c554aef96806a";
12			
13	String data = merchant_id + type + serial + code + amount;
14			
15	Mac sha256 = Mac.getInstance("HmacSHA256");
16	SecretKeySpec key = new SecretKeySpec(secret_key.getBytes("UTF-8"), "HmacSHA256");
17	sha256.init(key);
18			
19	String signature = Base64.getEncoder().encodeToString(data.getBytes());
20
21	URL url = new URL("https://recard.vn/api/card");
22	HttpURLConnection con = (HttpURLConnection) url.openConnection();
23	con.setRequestMethod("POST");
24	con.setRequestProperty("User-Agent", "Mozilla/5.0");
25	con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
26	con.setRequestProperty("charset", "UTF-8");
27	con.setDoOutput(true);
28	String query = "?merchant_id=" + merchant_id
29				 + "&type=" + type
30				 + "&serial=" + serial
31				 + "&code=" + code
32				 + "&amount=" + amount
33				 + "&signature=" + signature;
34	DataOutputStream wr = new DataOutputStream(con.getOutputStream());
35	wr.writeBytes(query);
36	wr.flush();
37	wr.close();
38
39	int responseCode = con.getResponseCode();
40	if(responseCode == 200) {
41		// Phản hồi thành công
42	}else {
43		// Phản hồi thành lỗi
44		System.out.print("Error: '" + con.getResponseMessage() + "' - Code: " + con.getResponseCode());
45	}
46} catch (UnsupportedEncodingException e) {
47	e.printStackTrace();
48} catch (NoSuchAlgorithmException e) {
49	e.printStackTrace();
50} catch (InvalidKeyException e) {
51	e.printStackTrace();
52} catch (MalformedURLException e) {
53	e.printStackTrace();
54} catch (ProtocolException e) {
55	e.printStackTrace();
56} catch (IOException e) {
57	e.printStackTrace();
58}