@axolo/node-wechat-mp

node-wechat-mp

Wechat mini program SDK for Node.js.

install

yarn install @axolo/node-wechat-mp

api

constructor(config)

config params

param	description
appId	Wechat miniprogram appId, required
appSecret	Wechat miniprogram appSecret, required
error	error class, default WechatMpError
cache	token cache, default cache-manager single memory caching, ttl 7200
http	http client, default axios
url	request url of api
url.base	base url, default https://api.weixin.qq.com/cgi-bin
url.token	get token, default https://api.weixin.qq.com/cgi-bin/token
url.code2session	code2Session, default https://api.weixin.qq.com/sns/jscode2session

code2session(params)

see code2Session

param	description
jsCode	code of wx.login() result
grantType	authorization_code
method	GET

return Promise of auth session

decrypt(params)

see signature

param	description
sessionKey	sessionKey of auth.code2session()
encryptedData	encrypted data
iv	iv

return Object of decrypted data

token(options)

get access token from caching or request

param	description
options.method	http method, default GET
options.grantType	OAuth2 grant type, default client_credential

return Object of access token

request(options)

request wechat api with access token by short url without base url

params	description
options	usage like axios, but aliases NOT support

return response data of wechat api

example

decrypt data.

'use strict';

const WechatMp = require('@axolo/node-wechat-mp');

const config = {
  appId: 'YOUR_WECHAT_MINIPROGRAM_APPID',
  appSecret: 'YOUR_WECHAT_MINIPROGRAM_APPSECRET',
};

const wechatMp = new WechatMp(config);

const decrypted = wechatMp.decrypt({
  sessionKey: 'session_key of code2session()',
  encryptedData: 'base64 encrypted data',
  iv: 'base64 iv',
});

console.log(decrypted);

test

config

Add git ignored test/config.json as:

{
  "appId": "YOUR_WECHAT_MINIPROGRAM_APPID",
  "appSecret": "YOUR_WECHAT_MINIPROGRAM_APPSECRET"
}

run

See Wechat miniprogram code2Session to get js_code.

node test/code2session.test.js WECHAT_MINIPROGRAM_JS_CODE

result

Success output like this:

{
  session_key: 'WechatMiniprogram==',
  openid: 'WechatMiniprogramOpenid',
  unionid: 'WechatMiniprogramUnionid'
}