node-wechat

Wechat Pay v3 Node.js SDK.

Install

1yarn add @axolo/node-wechat-pay

API

For more usage please issue.

constructor(config = {})

params

config	required	description
appId	yes	wechat pay appid
mchId	yes	wechat pay mchid
mchCert	yes	wehcat pay merchant certificate
mchCertKey	yes	wehcat pay merchant certificate private key
mchCertSn	yes	wechat pay merchant certificate serial number
apiV3Key	yes	wechat pay api v3 secret key
notifyUrl	yes	Wechat Pay Notify callback url
notifySuccess		Wechat Pay Notify need response { code: 'SUCCESS' } event types
platformCert		wehcat pay platform certificate
currency		default is CNY
appType		mp = miniprogram
http		HTTP Client, default is built-in axios instance
error		class of Error, default is WechatPayError
logger		function of logger, default is console
cache		default is {}, it is reserved

return

Object of WechatPay Node.js SDK instance.

http(config)

http client for request wechat pay API.

params

param	required	description
config	yes	config of axios

return

Promise of wechat pay result as axios response.

nonceStr()

return

String of nonce_str, random string.

timeStamp()

return

String of timestamp, unix timestamp second.

payRequest(payPackage, signType = 'RSA')

params

param	required	description
payPackage	yes	package of wechat pay, like prepay_id=***
signType		signType of wechat pay, default is RSA

return

Object of wechat pay payment request

prop	description
appId	wehcat pay appid
timeStamp	timestamp, seconds
nonceStr	nonce string
package	package of wechat pay, like prepay_id=***
paySign	base64 signature
signType	signType of wechat pay, like RSA

notify(data)

params

param	required	description
data	yes	Wechat Pay Notify request body

return

Object of Wechat Pay Notify decrypt resource with response suggestion.

prop	description
resource	decrytp resource
response	response suggestion. like { code: 'SUCCESS' }

Example

1const fs = require('fs');
2const WechatPay = require('@axolo/node-wechat-pay');
3
4const wechatPay = new WechatPay({
5  appType: 'mp',
6  appId: 'wechat_pay_appid',
7  mchId: 'wechat_pay_mchid',
8  mchCertSn: 'wechat_pay_mch_cert_serial_no',
9  mchCertKey: fs.readFileSync('wehcat_pay_mch_cert_private_key.pem'),
10  mchCert: fs.readFileSync('wehcat_pay_mch_cert.pem'),
11  apiV3Key: 'wechat_pay_api_v3_secret',
12  notifyUrl: 'https://url-of-wechat-pay-notify',
13});
14
15wechatPay.http.get('/v3/certificates').then(res => {
16  wechatPay.logger.log(res.data);
17}).catch(err => {
18  wechatPay.logger.error(err);
19});

Test

1yarn test

TODO

• support upload
• test

Yueming Fang