API Explanation

Request Type

POST

Request URI

/api/v1/pay/weixin/mapp-pay

Request

Parameter	Type	Required	Description	Remark
appId	String	Yes	WeChat appId
openId	String	Yes	WeChat openId	The user openId obtained in the WeChat mini app
amount	String	Yes	Transaction Amount	cent is the unit, “100” means a dollar
callbackURL	String	Yes	Callback URL	Send notifications to this URL when an order is complete (Maximum length 255 English characters)
remark	String	No	Remark	Remark(Maximum length with 128 English characters)

Request Example:

{
  "appId": "wx2f194e1f2a4e1645",
  "openId": "owv3d1fnMx1IpB6dWL7pK3TmJhBe",
  "amount": "100",
  "callbackURL": "https://your.callback.url",
  "remark": ""
}

Response

Parameter	Type	Description
payInfo	String	Payment Parameters
merchantId	String	Merchant ID
paymentId	String	Payment ID
amount	String	Transaction Amount

Response Example：

{
  "status": "SUCCESS",
  "result": {
    "payInfo": "{\"appId\":\"wx53949a5b7cda9226\",\"timeStamp\":\"2023030612\",\"nonceStr\":\"Qga4FuDEVFlEr13C\",\"packageStr\":\"prepay_id\\u003dwx07010712646422b84dfd8c4e7844f50000\",\"signType\":\"MD5\",\"paySign\":\"18F34642E2DB3F7A5978C9F77AA3EE60\"}",
    "merchantId": "AB00000004",
    "paymentId": "1678122425666817",
    "amount": null
  }
}

Among them, payInfo contains the following data in JSON format, which is required by the front-end to complete the payment

{
  "appId": "wx53949a5b7cda9226",
  "timeStamp": "2023030612",
  "nonceStr": "Qga4FuDEVFlEr13C",
  "packageStr": "prepay_id=wx07010712646422b84dfd8c4e7844f50000",
  "signType": "MD5",
  "paySign": "18F34642E2DB3F7A5978C9F77AA3EE60"
}