WeChat JS-SDK 백엔드 인터페이스에서 Node.js 구현

const express = require('express')const app = express()app.get('/wxJssdk', (req, res) => {
  res.send('请求成功了了了了')})app.listen(80, err => {
  if(!err) console.log('connect succeed')})

let jsapi_ticket = jsapi_ticket  // 上一步从获取的jsapi_ticketlet nonce_str = '123456'    // 密钥，字符串任意，可以随机生成let timestamp = new Date().getTime()  // 时间戳let url = req.query.url   // 使用接口的url链接，不包含#后的内容// 将请求以上字符串，先按字典排序，再以'&'拼接，如下：其中j > n > t > u，此处直接手动排序let str = 'jsapi_ticket=' + jsapi_ticket + '&noncestr=' + nonce_str + '&timestamp=' + timestamp + '&url=' + url// 用sha1加密let signature = sha1(str)

const request = require('request')const grant_type = 'client_credential'const appid = 'your app id'const secret = 'your app secret'request('https://api.weixin.qq.com/cgi-bin/token?grant_type=' + grant_type + '&appid=' + appid + '&secret=' + secret, (err, response, body) => {
  let access_toekn = JSON.parse(body).access_token

  request('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=' + access_token + '&type=jsapi', (err, response, body) => { let jsapi_ticket = JSON.parse(body).ticket let nonce_str = '123456'    // 密钥，字符串任意，可以随机生成 let timestamp = new Date().getTime()  // 时间戳 let url = req.query.url   // 使用接口的url链接，不包含#后的内容 // 将请求以上字符串，先按字典排序，再以'&'拼接，如下：其中j > n > t > u，此处直接手动排序 let str = 'jsapi_ticket=' + jsapi_ticket + '&noncestr=' + nonce_str + '&timestamp=' + timestamp + '&url=' + url     // 用sha1加密 let signature = sha1(str)  })})

app.post('/wxJssdk/getJssdk', (req, res) => {
  const request = require('request')  const grant_type = 'client_credential'
  const appid = 'your app id'
  const secret = 'your app secret'

  request('https://api.weixin.qq.com/cgi-bin/token?grant_type=' + grant_type + '&appid=' + appid + '&secret=' + secret, (err, response, body) => {let access_toekn = JSON.parse(body).access_tokenrequest('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=' + access_token + '&type=jsapi', (err, response, body) => {   let jsapi_ticket = JSON.parse(body).ticket   let nonce_str = '123456'    // 密钥，字符串任意，可以随机生成   let timestamp = new Date().getTime()  // 时间戳   let url = req.query.url   // 使用接口的url链接，不包含#后的内容   // 将请求以上字符串，先按字典排序，再以'&'拼接，如下：其中j > n > t > u，此处直接手动排序   let str = 'jsapi_ticket=' + jsapi_ticket + '&noncestr=' + nonce_str + '&timestamp=' + timestamp + '&url=' + url       // 用sha1加密   let signature = sha1(str)       res.send({ appId: appid, timestamp: timpstamp, nonceStr: nonce_str, signature: signature,   })})  })})

axios.post('/wxJssdk/getJssdk', {url: location.href}).then((response) => {
  var data = response.data

  wx.config({debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。appId: data.appId, // 必填，公众号的唯一标识timestamp: data.timestamp, // 必填，生成签名的时间戳nonceStr: data.nonceStr, // 必填，生成签名的随机串signature: data.signature,// 必填，签名，见附录1jsApiList: ['onMenuShareTimeline', 'onMenuShareAppMessage'] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
  });})

if (wx) {
  axios.post('/wxJssdk/getJssdk', {url: location.href}).then((response) => {var data = response.datawx.config({  debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。  appId: data.appId, // 必填，公众号的唯一标识  timestamp: data.timestamp, // 必填，生成签名的时间戳  nonceStr: data.nonceStr, // 必填，生成签名的随机串  signature: data.signature,// 必填，签名，见附录1  jsApiList: ['onMenuShareTimeline', 'onMenuShareAppMessage'] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2});wx.ready(function () {  wx.onMenuShareTimeline({  title: wxShare.title,  desc: wxShare.desc,  link: wxShare.link,  imgUrl: wxShare.imgUrl  });  wx.onMenuShareAppMessage({  title: wxShare.title,  desc: wxShare.desc,  link: wxShare.link,  imgUrl: wxShare.imgUrl});
  })wx.error(function (res) {   // config信息验证失败会执行error函数，如签名过期导致验证失败，具体错误信息可以打开config的debug模式查看，也可以在返回的res参数中查看，对于SPA可以在这里更新签名。})  })}

const request = require('request')const express = require('express')const app = express()const sha1 = require('sha1')const waterfall = require('async/waterfall')const NodeCache = require('node-cache')const cache = new NodeCache({stdTTL: 3600, checkperiod: 3600}) //3600秒后过过期app.get('/wxJssdk', (req, res) => {
  let wx = req.query

  // 1）将token、timestamp、nonce三个参数进行字典序排序
  let token = 'jegfjaeghfuyawegfgjdbh'
  let timestamp = wx.timestamp
  let nonce = wx.nonce

  // 2）将三个参数字符串拼接成一个字符串进行sha1加密
  let list = [token, timestamp, nonce]  let result = sha1(list.sort().join(''))  // 3）开发者获得加密后的字符串可与signature对比，标识该请求来源于微信
  if (result === wx.signature) {res.send(wx.echostr)  } else {res.send(false)  }})app.get('/wxJssdk/getJssdk', (req, res) => {
  let grant_type = 'client_credential'
  let appid = 'your app id'
  let secret = 'your app secret' // appscret

  let steps = []  // 第一步，获取access_token
  steps.push((cb) => {

  let steps1 = []// 第1.1步，从缓存中读取access_tokensteps1.push((cb1) => {  let access_token = cache.get('access_token', (err, access_token) => {cb1(err, access_token)      })})// 第1.2步，缓存中有access_token则直接返回，如果没有，则从服务器中读取access_tokensteps1.push((access_token, cb1) => {  if (access_token) {cb1(null, access_token, 'from_cache')      } else {request('https://api.weixin.qq.com/cgi-bin/token?grant_type=' + grant_type + '&appid=' + appid + '&secret=' + secret, (err, response, body) => {  cb1(err, JSON.parse(body).access_token, 'from_server')})      }})// 第1.3步，如果是新从服务器取的access_token，则缓存起来，否则直接返回steps1.push((access_token, from_where, cb1) => {  if (from_where === 'from_cache') {console.log(' === 成功从缓存中读取access_token: ' + access_token + ' ===')cb1(null, access_token)      } else if (from_where === 'from_server') {cache.set('access_token', access_token, (err, success) => {  if (!err && success) {console.log(' === 缓存已过期，从服务器中读取access_token: ' + access_token + ' ===')cb1(null, access_token)          } else {cb1(err || 'cache设置access_token时，出现未知错误')          }})      } else {cb1('1.3获取from_where时，from_where值为空')      }})waterfall(steps1, (err, access_token) => {  cb(err, access_token)})  })  // 第二步，获取ticket
  steps.push((access_token, cb) => {let steps1 = []// 第2.1步，从缓存中读取ticketsteps1.push((cb1) => {  let ticket = cache.get('ticket', (err, ticket) => {cb1(err, ticket)      })})// 第2.2步，缓存中有ticket则直接返回，如果没有，则从服务器中读取ticketsteps1.push((ticket, cb1) => {  if (ticket) {cb1(null, ticket, 'from_cache')      } else {request('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=' + access_token + '&type=jsapi', (err, response, body) => {  cb1(err, JSON.parse(body).ticket, 'from_server')})      }})// 第2.3步，如果新从服务器取的ticket，则缓存起来，否则直接返回steps1.push((ticket, from_where, cb1) => {  if (from_where === 'from_cache') {console.log(' === 成功从缓存中读取ticket: ' + ticket + ' ===')cb1(null, ticket)      } else if (from_where === 'from_server') {cache.set('ticket', ticket, (err, success) => {  if (!err && success) {console.log(' === 缓存已过期，从服务器中读取ticket: ' + ticket + ' ===');cb1(null, ticket)          } else {cb1(err || 'cache设置ticket时，出现未知错误')          }})      } else {cb1('2.3获取from_where时，from_where值为空')      }})waterfall(steps1, (err, ticket) => {  cb(err, ticket)})  })  // 第三步，生成签名
  steps.push((ticket, cb) => {let jsapi_ticket = ticketlet nonce_str = '123456'let timestamp = new Date().getTime()let url = req.query.urllet str = 'jsapi_ticket=' + jsapi_ticket + '&noncestr=' + nonce_str + '&timestamp=' + timestamp + '&url=' + urllet signature = sha1(str)cb(null, {  appId: appid,  timestamp: timestamp,  nonceStr: nonce_str,  signature: signature,  ticket: ticket})  })  waterfall(steps, (err, data) => {if (err) {  res.send({status: 'error', data: err})} else {  res.send({status: 'success', data: data})}
  })})app.use('/wxJssdk/public', express.static('public'))app.listen(80, err => {
  if(!err) console.log('connect succeed')})