商戶出示碼模式（正掃）(MPM)

POST /trade/v1/payment HTTP/1.1
Content-Type: application/x-www-form-urlencoded
X-QF-APPCODE: A6A49A66B4C********94EA95032
X-QF-SIGN: 3b020a6349646684ebeeb0ec2cd3d1fb

expired_time=10&goods_name=qfpay&limit_pay=no_credit&mchid=R1zQrTdJnn&out_trade_no=Native20190722145741431794b8d1&pay_type=800201&txamt=20&txcurrcd=HKD&txdtm=2019-07-22 14:57:42&udid=AA

{
  "surcharge_fee": 0,
  "qrcode": "https://qr.alipay.com/bax03190uxd47wbekffy6033",
  "pay_type": "800101",
  "surcharge_rate": 0,
  "resperr": "success",
  "txdtm": "2020-04-23 11:09:24",
  "out_trade_no": "364ZK6BAJGYHMU3TUX0X7MGIGQL4O8KI",
  "syssn": "20200423066200020000976054",
  "sysdtm": "2020-04-23 11:09:27",
  "txcurrcd": "EUR",
  "respmsg": "",
  "chnlsn2": "",
  "cardcd": "",
  "udid": "qiantai2",
  "txamt": "1",
  "respcd": "0000",
  "chnlsn": ""
}