1. user up interface
Business Description: User A requests recharge at Merchant B, Merchant B calls this interface, the result returned by the interface includes a URL. The URL opens to a page containing a QR code. User A scans the QR code with MPay wallet, after successful scanning the code, the system will request a callback callBackUrl. after User A completes the payment, merchant B's wallet increases the amount of coins and deducts the handling fee; user A's wallet decreases the amount of coins.
`interface address：{host}/api/v2.1/merch/user/up `request method：GET/POST form
| field | type | nickname | description |
|---|---|---|---|
| merchId | Integer | merchant ID | |
| body | String | encryption parameter | See table 4 for details |
| t | Integer | current timestamp | |
| key | String | sign | Md5(merchId+body+t+md5key) |
Parameters: Table 4:
| field | type | nickname | description |
|---|---|---|---|
| merchOrderId | String | Merchant up order number | |
| amount | Integer | up Amount | |
| returnUrl | String | return url | Non-essential, users will be redirected to this URL after completing the payment by scanning the qr code. |
| callBackUrl | String | Merchant Customized Callback Interface | For details, please see the user‘s up order result notification. |
| currency | String | Currency KEY | Non-essential, the merchant will have a default currency, which is normally CNY. |
| merchUserId | String | Merchant's user ID | Merchant's user ID (unique value) |
| remark | String | Remarks | Merchant’s extension |
| title | String | pay Title | pay Title |
body generation rules：
`1. base64Decode public key `2. Convert the parameters in Table 4 to jsonString
3. Use public key to encrypt jsonString with RSA (ECB mode, PKCS1 alignment)
4. The encryption result base64 Encode is the string body
Interface Response Results：
| field | type | nickname | description |
|---|---|---|---|
| code | Integer | status code | 0 means the request is normal, see the attached table for details. |
| message | String | message | |
| data | Return data | {url:”url”,id:”Up Order Number”} |