Eggservice builds the basic service of wechat official account

Egg Services build the basic services of wechat official account

title	Content
introduce	Service establishment (http
To configure	Config To configure
Code implementation	Control layer 、 route

Installation dependency

npm i co-wechat -s
# or 
yarn add co-wechat
# or
cnpm i co-wechat -s

Config Configuration code

/* eslint valid-jsdoc: "off" */

'use strict';

/** *  Wechat official account docking configuration content  * * config/config.default.js *  Of course, there are some other configurations , I'm just showing you  */
module.exports = appInfo => {
    
  config.wehcat = {
    
    token: 'token', //  Basic configuration token Information 
    appid: 'appid', //  WeChat public account appid Information 
    encodingAESKey: 'encodingAESKey', //  WeChat public account encodingAESKey Information 
  }
}

Routing code

'use strict';

/** * @param {Egg.Application} app - egg application */
module.exports = app => {
    
  router.post('/wechat', controller.wechat.wechat.wechat);
  router.get('/wechat', controller.wechat.wechat.index);
}

Control layer code

'use strict';

/** *  Basic configuration of wechat official account , Interface access  * // app/controller/wehcat/wechat.js */

const wechat = require('co-wechat');
const crypto = require('crypto');

const Controller = require('egg').Controller;

class WechatController extends Controller {
    
  async index() {
    
    const {
     ctx } = this;
    
    const query = ctx.request.query;
    const signature = query.signature;
    const timestamp = query.timestamp;
    const nonce = query.nonce;
    const echostr = query.echostr;
    if (await this.check(timestamp, nonce, signature, 'weixin')) {
    
      this.ctx.body = echostr;
    } else {
    
      this.ctx.body = 'It is not from weixin';
    }
  }

  async check(timestamp, nonce, signature, token) {
    
    const tmp = [token, timestamp, nonce].sort().join('');
    const currSign = crypto.createHash('sha1').update(tmp).digest('hex');
    return (currSign === signature);
  }
}  

WechatController.prototype.wechat = wechat({
    
  token: 'weixin', //  Basic configuration token Information 
  appid: 'wx8a709a03e1584e6b', //  WeChat public account appid Information 
  encodingAESKey: 'H6xJLje9n5JjgAFiCsmk0TfIkcUpiGrURAUxtnRui0G', //  WeChat public account encodingAESKey Information 
}).middleware(async (message, ctx) => {
    
  console.log(message);
  return {
     type: 'text', content: 'Hello world!' };
})

module.exports = WechatController;

Be careful

• Alibaba cloud default ssl perhaps tsl Certificates are slow , If after use URL The request timed out or the service did not arrive at all egg In the service , Can be substituted with http To test , Or use paid ssl perhaps tsl The certificate is parsed , It took me a long time to find out the reason

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Basic service docking instructions for wechat official account
Wechat official account interface commissioning
Source location