WeChat in-APP Payments

HTTP Request

Endpoint : /trade/v1/payment

Method : POST

PayType : 800210

WeChat in-APP payments require a formal application on the WeChat Open Platform. Merchants have to register an account and the APP and then receive an appid to enable payments. For more information, please refer to the official Wechat documentation.

Optionally merchants can activate real-name authentication with WeChat. Currently real-name identification is only available for Mainland Chinese citizens and include a person's real name and national ID card number. In case identification is provided the payer's wallet information like a connected bank card must be identical with the data provided by merchants. If customers did not yet bind their WeChat account to a bank card the payment will go through regardless.

To download Wechat SDK please refer to this link.

Request Parameters

Request Body:

{
  goods_info=test_app&goods_name=qfpay&out_trade_no=O5DNgEgL1XpvbvQSfPhN&pay_type=800210&txamt=10&txcurrcd=HKD&txdtm=2019-09-13 04:53:03&udid=AA
}

The above command returns JSON structured like this:

{
  "sysdtm": "2019-09-13 12:53:04",
  "paydtm": "2019-09-13 12:53:04",
  "txcurrcd": "HKD",
  "respmsg": "",    
  "pay_params": 
        {
        "package": "Sign=WXPay",
        "timestamp": 1568350384,
        "sign": "XwFjohEKWdkhhT4ueg7BxeDn8tT9LcqoZYdXzifTMYyDGe3/tRchpii6vWgOn21tPSaAtqo766gvifXgDEOwR+ILKN8t97r624IJlrH0EkvSUSLh9E/cga9scXGVy0jPWHM/oVvVzJIvXew79CwZFCNTSJok2KmpSm9X9oPg7PGXbqvNMHltf+YlIOsuiz391qVmFtTE5A/cpA50+06T7iW8GYsOJQTTJed75VY+aSzNo5C6ju6WSgJKpAJJ0ocl+ONtmOp6GLVBSQXaMC4PitQcebcoP2J6fFgQ+YcPwHXasCYEnn4LaFN7zT/AjGg3E3gdCx3ksGNBOazYBRVz+g==",
        "partnerid": "316525492",
        "appid": "wx3c6896fa9b351f2a",
        "prepayid": "wx131253044253463a81dc336e1254149882",
        "noncestr": "7786db42d9a245c2b1cfc717ac59376e"
        },
  "pay_type": "800210",
  "cardcd": "",    
  "udid": "AA",
  "txdtm": "2019-09-13 04:53:03",
  "txamt": "10",
  "resperr": "交易成功",
  "out_trade_no": "O5DNgEgL1XpvbvQSfPhN",
  "syssn": "20190913152100020001567741",   
  "respcd": "0000",
  "chnlsn": ""
}

Attribute	Mandatory	Type	Description
mchid	No	String	The unique merchant ID is created by QFPay during the merchant onboarding process.
out_trade_no	Yes	String	External transaction number
txamt	Yes	String	The actual amount of consumption, the maximum deduction amount cannot exceed the fozen funds
txcurrcd	Yes	String(3)	Transaction currency. View the Currencies table for a complete list of available currencies
rmb_tag	No	String(1)	WeChat Pay in Hong Kong uses rmb_tag = Y together with txcurrcd = CNY to indicate that the transaction currency is RMB.
txdtm	Yes	String	Format: YYYY-MM-DD hh:mm:ss
udid	No	String	Device ID, must be unique
txzone	No	String	Time zone, used to record the local order time. The default is Beijing time GMT+8 (+0800)
return_url	No	String	Redirect URL, redirect to address after successful payment. Mandatory parameter to submit for GrabPay Online. Alipay WAP restricts the return_url to maximum 200 characters.
extend_info	No	Object	Extended Customer Info, real name customer identification. This parameter is currently only available for Mainland Chinese citizens and needs to be explicitly activated with WeChat for the selected PayType. The consumer's national ID card number is contained in the parameter user_creid and the payer's real name in encoded form or written in Chinese characters must be provided in user_truename. An example looks like this; extend_info = '{"user_creid":"430067798868676871","user_truename":"\\u5c0f\\u6797"}'

Response Parameters

Attribute	Type	Description
syssn	String(40)	QFPay transaction number, returned by the system once payment is completed
orig_syssn	String(40)	External transaction number
txdtm	String(20)	Transaction request time, format: YYYY-MM-DD hh:mm:ss
txamt	Int(11)	Transaction amount
sysdtm	String(20)	System transaction time, format: YYYY-MM-DD hh:mm:ss This parameter value is used as the cut-off time for settlements.
respcd	String(4)	Return code
respmsg	String(128)	Information description
resperr	String(128)	Description error
cardcd	String	Card number
txcurrcd	String	Transaction currency. View the Currencies table for a complete list of available currencies
pay_params	Object	Payment data to call Wechat SDK