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@jonham/co-wechat-oauth

v2.0.4

Published

Co 版微信公共平台 OAuth

Downloads

2

Readme

co-wechat-oauth

Wechat OAuth for ES6。微信公共平台OAuth接口消息接口服务中间件与API SDK

已增加index.d.ts,支持类型推断、支持TypeScript使用。 可以直接在package.json中,增加"co-wechat-oauth": "https://github.com/Jonham/co-wechat-oauth.git"依赖,直接再yarnnpm install处理以来即可。

模块状态

  • NPM version
  • Build Status
  • Dependencies Status
  • Coverage Status

功能列表

  • OAuth授权
  • 获取基本信息

OAuth2.0网页授权,使用此接口须通过微信认证,如果用户在微信中(Web微信除外)访问公众号的第三方网页,公众号开发者可以通过此接口获取当前用户基本信息(包括昵称、性别、城市、国家)。详见:官方文档

详细参见API文档

Installation

$ npm install co-wechat-oauth

Usage

初始化

引入 OAuth 并实例化

var OAuth = require('co-wechat-oauth');
var client = new OAuth('your appid', 'your secret');

以上即可满足单进程使用。 当多进程时,token 需要全局维护,以下为保存 token 的接口。

const util = require('util');
const fs = require('fs');

const readFile = util.promisify(fs.readFile);
const writeFile = util.promisify(fs.writeFile);

var oauthApi = new OAuth('appid', 'secret', async function (openid) {
  // 传入一个根据 openid 获取对应的全局 token 的方法
  var txt = await readFile(openid +':access_token.txt', 'utf8');
  return JSON.parse(txt);
}, async function (openid, token) {
  // 请将 token 存储到全局,跨进程、跨机器级别的全局,比如写到数据库、redis 等
  // 这样才能在 cluster 模式及多机情况下使用,以下为写入到文件的示例
  // 持久化时请注意,每个openid都对应一个唯一的token!
  await writeFile(openid + ':access_token.txt', JSON.stringify(token));
});

引导用户

生成引导用户点击的 URL。

var url = client.getAuthorizeURL('redirectUrl', 'state', 'scope');

如果是PC上的网页,请使用以下方式生成

var url = client.getAuthorizeURLForWebsite('redirectUrl');

获取 Openid 和 AccessToken

用户点击上步生成的 URL 后会被重定向到上步设置的 redirectUrl,并且会带有 code 参数,我们可以使用这个 code 换取 access_token 和用户的openid

async function () {
  var token = await client.getAccessToken('code');
  var accessToken = token.data.access_token;
  var openid = token.data.openid;
}

注意,因为经常会因为浏览器的后退,导致生成的地址被反复访问,这会导致 code 被反复使用而出现错误。在这一步,最佳实践是使用完 code 之后,就将用户的信息存到 session 中。再进入这个页面时,直接使用 session 中的数据。

获取用户信息

如果我们生成引导用户点击的 URL 中 scope 参数值为 snsapi_userinfo,接下来我们就可以使用 openid 换取用户详细信息(必须在 getAccessToken 方法执行完成之后)

async function () {
  var userInfo = await client.getUser('openid');
}

捐赠

如果您觉得Wechat OAuth对您有帮助,欢迎请作者一杯咖啡

捐赠wechat

或者

交流群

QQ群:157964097,使用疑问,开发,贡献代码请加群。

Contributors

感谢以下贡献者:

$ git summary

 project  : co-wechat-oauth
 repo age : 1 year, 8 months
 active   : 8 days
 commits  : 16
 files    : 11
 authors  :
    13  Jackson Tian  81.2%
     2  linkkingjay   12.5%
     1  wangxiuwen    6.2%

License

The MIT license.