Lao Development Bank E-Commerce payment
- generate qr code for scan payment with app LDB Trust
- deeplink payment with app LDB Trust
- check status payment with public key
TODO:
- Check status transaction realtime
ຂັ້ນຕອນການຂໍຊຳລະເງິນ online ຜ່ານ LDB QR Payment:
- ເຮັດໃບສະເຫນີເຂົ້າມາຂໍເຊື່ອມຕໍ່ QR payment ກັບ ທະນາຄານພັດທະນາລາວ
- ເຈລະຈາຕົກລົງຄ່າທຳນຽມ ແລະ ການເຊັນສັນຍາຮ່ວມມື
- ຝາຍໄອທີຈະສ້າງ Merchant ID ໃຫ້ເພື່ອຊຳລະເງິນແທ້
ລຸ່ມນີ້ແມ່ນ Example Code ທ່ານສາມາດນຳໄປທົດລອງໄດ້ທັນທີ
import 'package:flutter/material.dart';
import 'package:flutter/services.dart' show rootBundle;
import 'package:ldb_qr_payment/ldb_qr_payment.dart';
import 'package:url_launcher/url_launcher.dart';
import 'dart:io';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'LDB QR Payment',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: LDBPAY(),
);
}
}
//for example
class LDBPAY extends StatefulWidget {
@override
State<LDBPAY> createState() => _LDBPAYState();
}
class _LDBPAYState extends State<LDBPAY> {
late String token, linkPayment = '', qrScan = '', dataResponse = '';
@override
void initState() {
// TODO: implement initState
super.initState();
getTokenAuthen();
}
void getTokenAuthen() async {
// Note: Parameter
// 1 user ----> LDB bank create a user to you (user test: APPLINK)
// 2 pass ----> LDB bank create a user to you (pass test: T2C%tL81oxN3N!H5Aby9)
final getToken = await LDBPayment()
.tokenAuthentication('APPLINK', 'T2C%tL81oxN3N!H5Aby9');
print('LDB TOKEN: $getToken');
setState(() {
token = getToken;
getQRcode(getToken);
});
}
void getQRcode(String LDBToken) async {
// Note: Parameter
// 1 token
// 2 merchId
// 3 merchRef
// 4 amount
// 5 additional
// 6 urlBack
// 7 urlCallBack
// 8 remark
final dataQR = await LDBPayment().getQR(
LDBToken,
'LDB0302000001',
'txt123456',
1,
'testpayment',
'https://preh5.newpay.la/scale/success.html',
'https://app.pitidev.com/?status=success',
'payment 1000kip');
print(dataQR);
setState(() {
linkPayment = dataQR['link'];
qrScan = dataQR['qr'];
});
}
Future<void> _openAppTrust() async {
if (!await launchUrl(Uri.parse(linkPayment))) {
throw 'Could not launch $linkPayment';
}
}
void checkQrPayment() async {
// Note: Parameter
// 1 public_key.pem
// 2 merchId
// 3 merchRef
// 4 token
// 5 user
final publicPem = await rootBundle.loadString('assets/public_key.pem');
final dataRes = await LDBPayment().checkPayment(
publicPem, 'LDB0302000001', 'txt123456', token, 'APPLINK');
print('RES: ${dataRes}');
setState(() {
dataResponse = dataRes.toString();
});
}
@override
Widget build(BuildContext context) {
return Container(
child: Scaffold(
body: SafeArea(
child: ListView(
children: [
SizedBox(
height: 10,
),
const Center(
child: Text('LDB QR Payment',
style:
TextStyle(fontWeight: FontWeight.bold, fontSize: 15)),
),
Container(
margin: const EdgeInsets.symmetric(horizontal: 20),
child: Image.network(qrScan),
),
Container(
margin: const EdgeInsets.all(10),
child: MaterialButton(
color: Colors.blue,
onPressed: () {
//ນຳໃຊ້ package url_launcher: ^6.1.5 ເພື່ອທຳການ link open app LDB Trust ເພື່ອຊຳລະເງິນ
_openAppTrust();
},
child: const Text('Payment With LDB Trust'),
),
),
Container(
margin: const EdgeInsets.all(10),
child: MaterialButton(
color: Colors.green,
onPressed: () {
checkQrPayment();
},
child: const Text('Check QR Payment'),
),
),
Container(
margin: const EdgeInsets.all(10),
child: const Text(
'Data Callback Response:',
style: TextStyle(fontWeight: FontWeight.bold),
),
),
Container(
margin: const EdgeInsets.all(10),
height: 300,
child: Text(dataResponse),
)
],
),
),
),
);
}
}
public key ສຳລັບໄວ້ທົດລອງການດຶງຂໍ້ມູນກວດສອບທຸລະກຳ
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApL8zynFJXiS1+tZpgBaF
bVeITB2951zYSq1/9yVTFXelAoBA+8t2D38GsJDoQi/sIdxDYRmO4TDAoFTIOHqm
NNQBZTSGnr4jf7VarIF4nK3aFH+sJq1noCiHPHvPZTC3kwl4kX+d3pbs0zO50ZYn
bTV/8/QoeOJOgwbw8890FKShv4pEA8FAydB6HYJIjqI3HzYWz1NibR3sud6fmbkx
iMpIbjTJNDmXGU5/vH4pb8ofiHbXOa4iDWNUUmg1LUXUQuZQOW/Pr+JAUGoDcI3d
LIYVdThJNYdmVnUntEwU3+jcG0J9FUbZNU9fODeimjckDGUGgSranL8+rzaKog64
jwIDAQAB
-----END PUBLIC KEY-----
Code NodeJS ສຳລັບການເຂົ້າລະຫັດດ້ວຍ Public key ທີ່ທ່າງ LDB ຈະສ້າງ public key ໃຫ້ເພື່ອສົ່ງມາຮ້ອງຂໍຂໍ້ມູນທຸລະກຳທີ່ຕ້ອງການກວດສອບ:
const path = require("path");
const fs = require("fs");
const forge = require("node-forge");
function encryptStringWithRsaPublicKey(text) {
const absolutePath = path.resolve('public.pem');
const publicKeyFile = fs.readFileSync(absolutePath, 'utf-8');
var pki = forge.pki;
// convert a PEM-formatted public key to a Forge public key
var publicKey = pki.publicKeyFromPem(publicKeyFile);
const encrypted = publicKey.encrypt(text);
console.log("encrypted:", forge.util.encode64(encrypted));
return forge.util.encode64(encrypted);
};
function decryptStringWithRsaPrivateKey(toDecrypt) {
};
module.exports = encryptStringWithRsaPublicKey('{\"merchId\":\"LDB0302000001\",\"refNumber\":\"pitix99\"}');
Code Java ສຳລັບການເຂົ້າລະຫັດດ້ວຍ Public key ທີ່ທ່າງ LDB ຈະສ້າງ public key ໃຫ້ເພື່ອສົ່ງມາຮ້ອງຂໍຂໍ້ມູນທຸລະກຳທີ່ຕ້ອງການກວດສອບ:
public class EncodeDataExam {
private static Cipher cipher;
public PrivateKey getPrivate(String filename) throws Exception {
byte[] keyBytes = Files.readAllBytes(new File(filename).toPath());
PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory kf = KeyFactory.getInstance("RSA");
return kf.generatePrivate(spec);
}
public String encryptText(String msg, PrivateKey key)
throws UnsupportedEncodingException, IllegalBlockSizeException,
BadPaddingException, InvalidKeyException {
cipher.init(Cipher.ENCRYPT_MODE, key);
String encrypt = Base64.encodeBase64String(cipher.doFinal(msg.getBytes("UTF-8")));
return encrypt;
}
public static void main(String[] args) throws Exception {
EncodeDataExam ac = new EncodeDataExam();
PrivateKey privateKey = ac.getPrivate("public");
String msg = "{\"merchId\":\"LDB0302000001\",\"refNumber\":\"pitix99\"}";
String encrypted_msg = ac.encryptText(msg, privateKey);
System.out.println("Encode = " + encrypted_msg);
}
}
Code Golang ສຳລັບການເຂົ້າລະຫັດດ້ວຍ Public key ທີ່ທ່າງ LDB ຈະສ້າງ public key ໃຫ້ເພື່ອສົ່ງມາຮ້ອງຂໍຂໍ້ມູນທຸລະກຳທີ່ຕ້ອງການກວດສອບ: