Small micro-channel program acquiring user openid (Nodejs)

Small micro-channel program needs to get the user's openid as a user's unique identity, used to store and update the corresponding customer information. In an example Node background, the request foreground, background forward access channel corresponding to the interface to acquire the micro openid.

1. distal applet request:

getUserInfo: function(e) {
  app.globalData.userInfo = e.detail.userInfo
    this.setData({
      userInfo: e.detail.userInfo,
      hasUserInfo: true
    })
    wx.login({
      success: res => {
        app.globalData.usercode = res.code    //1. 获取usercode作为后面获取openid的参数
      }
    })

      var id=null
    id=wx.getStorageSync('openid')
    if (!id)
    {

      wx.request({
        url: getOpenId, //set in config .js // 2 back the API. 
        Method: "the POST" , 
        Data: { 
          js_code: app.globalData.usercode, 
        }, Success (RES) { 
          var OpenID = res.data.openid
           var a sessionKey = res.data. session_key of 
          the console.log (RES) 
          wx.setStorageSync ( "OpenID" , OpenID) 
          app.globalData.openId = OpenID
           IF (!! OpenID) {       // 3. after processing the acquired openid, can follow their own logic write 
            app. = globalData.openId OpenID 
            wxlogin (OpenID) 
          }  
        }
      })
    }

    
  }
})

2. Node JS backstage get openid:

router.post ( '/ wxgetOpenId', function (REQ, RES, Next) {  
   var Data = req.body
   var to APP_URL = 'HTTPS: //api.weixin.qq.com/sns/jscode2session'
   var APP_ID = 'wxXXXXXXXXX'    // App the above mentioned id applet, in the background you can see the public developer 
  var APP_SECRET = '8ad6f0XXXXXXXXXXXX'   // App Secrect program can be seen in the background of public developer 

  var ResData = null  
  var thisRes = RES
   IF (!! the Data .js_code) 
  { 
 
    Request ( `$ {} to APP_URL ? AppID APP_ID} = $ {$ & Secret = {} & js_code APP_SECRET data.js_code = {} $ = & grant_type authorization_code`, (error, Response, body) =>  {
      Console.log('statusCode:', response && response.statusCode)
      console.log(body)
      res.end(body)})
 
  }
})