Dougong

Updated: 7/26/26, 5:36:13 PM

Channel Overview

Dougong is an aggregated payment product by Huifu (Adapay). DaxPay integrates via Huifu V2 Trade SDK, covering WeChat, Alipay, and UnionPay.

Supported Payment Methods

WeChat QR (merchant scan): Returns QR code link
Alipay QR (merchant scan): Returns QR code link
UnionPay QR (merchant scan): Returns QR code link
WeChat JSAPI (Official Account): Requires openId, returns invoke params
WeChat Mini-program: Requires openId, returns invoke params
Alipay JSAPI: Requires openId / buyerId, returns tradeNO

Configuration

Add this channel in the Admin panel under "Channel Management":

Huifu Merchant ID (huifuId, required per transaction)
Merchant App ID
Service Provider System ID (sysId)
Product ID (productId)
Merchant RSA private key (PEM PKCS#8)
Dougong RSA public key (PEM, for verification)

Signature

RSA (PEM PKCS#8, merchant private key sign / Dougong public key verify)

Callback Handling

Async notification callback supported
Callback URL must be configured in the Dougong merchant platform

Notes

Configure callback URL in Huifu merchant platform
Ensure server IP is whitelisted
Sandbox and production use different gateway URLs