沖正 API 指南

import hashlib
import requests

environment = "https://test-openapi-hk.qfapi.com"
app_code = "YOUR_APP_CODE"
client_key = "YOUR_CLIENT_KEY"

def make_sign(data: dict, key: str) -> str:
    ordered = sorted(data.items())
    sign_str = "&".join(f"{k}={v}" for k, v in ordered) + key
    return hashlib.md5(sign_str.encode("utf-8")).hexdigest().upper()

payload = {
    "mchid": "MNxMp11FV35qQN",
    "txamt": "2500",
    "out_trade_no": "4MDGEJ7L496LAAU1V1HBY9HMOGWZWLXQ",
    "txdtm": "2020-03-05 16:50:30"
    # "syssn": "20200305066100020000977812"  # syssn / out_trade_no 擇一即可
}

headers = {
    "X-QF-APPCODE": app_code,
    "X-QF-SIGN": make_sign(payload, client_key)
}

r = requests.post(environment + "/trade/v1/reversal", data=payload, headers=headers)
print(r.json())

import java.util.HashMap;
import java.util.Map;

public class ReversalExample {
    public static void main(String[] args) {
        String url = "https://test-openapi-hk.qfapi.com/trade/v1/reversal";
        String appcode = "YOUR_APP_CODE";
        String clientKey = "YOUR_CLIENT_KEY";

        Map<String, String> payload = new HashMap<>();
        payload.put("mchid", "MNxMp11FV35qQN");
        payload.put("txamt", "2500");
        payload.put("out_trade_no", "4MDGEJ7L496LAAU1V1HBY9HMOGWZWLXQ");
        payload.put("txdtm", "2020-03-05 16:50:30");
        // payload.put("syssn", "20200305066100020000977812"); // syssn / out_trade_no 擇一即可

        // 產生簽名、送出請求的方式請沿用你們既有的 QFPayUtils / Requests 實作：
        // 1) key=value&...（依參數名排序）+ clientKey
        // 2) MD5 -> 大寫
        // 3) 以 X-QF-APPCODE / X-QF-SIGN header 發送 x-www-form-urlencoded
    }
}

const crypto = require("crypto");
const request = require("request");

const environment = "https://test-openapi-hk.qfapi.com";
const app_code = "YOUR_APP_CODE";
const client_key = "YOUR_CLIENT_KEY";

const payload = {
  mchid: "MNxMp11FV35qQN",
  txamt: "2500",
  out_trade_no: "4MDGEJ7L496LAAU1V1HBY9HMOGWZWLXQ",
  txdtm: "2020-03-05 16:50:30"
  // syssn: "20200305066100020000977812" // syssn / out_trade_no 擇一即可
};

const sorted = Object.keys(payload)
  .sort()
  .map(k => `${k}=${payload[k]}`)
  .join("&");

const sign = crypto
  .createHash("md5")
  .update(sorted + client_key)
  .digest("hex")
  .toUpperCase();

request({
  uri: environment + "/trade/v1/reversal",
  method: "POST",
  headers: {
    "X-QF-APPCODE": app_code,
    "X-QF-SIGN": sign
  },
  form: payload
}, function (error, response, body) {
  console.log(body);
});

<?php
function make_sign($fields, $key) {
  ksort($fields);
  $pairs = [];
  foreach ($fields as $k => $v) {
    $pairs[] = $k . "=" . $v;
  }
  $sign_str = implode("&", $pairs) . $key;
  return strtoupper(md5($sign_str));
}

$url = "https://test-openapi-hk.qfapi.com/trade/v1/reversal";
$app_code = "YOUR_APP_CODE";
$client_key = "YOUR_CLIENT_KEY";

$fields = [
  "mchid" => "MNxMp11FV35qQN",
  "txamt" => "2500",
  "out_trade_no" => "4MDGEJ7L496LAAU1V1HBY9HMOGWZWLXQ",
  "txdtm" => "2020-03-05 16:50:30"
  // "syssn" => "20200305066100020000977812" // syssn / out_trade_no 擇一即可
];

$sign = make_sign($fields, $client_key);

$headers = [
  "X-QF-APPCODE: " . $app_code,
  "X-QF-SIGN: " . $sign
];

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($fields));
$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>

{
  "surcharge_fee": "0",
  "resperr": "success",
  "txdtm": "2020-03-05 16:50:30",
  "syssn": "20200305066100020000977814",
  "sysdtm": "2020-03-05 16:54:38",
  "txcurrcd": "EUR",
  "respmsg": "",
  "chnlsn2": "",
  "cardcd": "",
  "udid": "qiantai2",
  "txamt": "2500",
  "orig_syssn": "20200305066100020000977813",
  "surcharge_rate": "0",
  "respcd": "0000",
  "chnlsn": ""
}