nodejs服务获取微信用户openid

Posted 2022-11-18 chi1130

前端代码

接口发送code就可以

<template>
    <view class="brn-wrap">
      <view class="uni-btn-v" v-if="!hasLogin">
        <button @click="handleBeforeLogin"> title </button>
      </view>
      <view class="uni-btn-v" v-else>
        <button @click="handleTitleClick"> title </button>
      </view>
    </view>
</template>

  import  requestLogin  from '@/utils/str.js';
  export default 
    props: 
      title: 
        type: String,
        default: '提交发布'
      
    ,
    data() 
      return 
        hasLogin: false
      ;
    ,
    methods: 
      handleTitleClick() 
        this.$emit('submit');
      ,
      handleBeforeLogin() 
        let that = this;
        // 推荐使用wx.getUserProfile获取用户信息，开发者每次通过该接口获取用户个人信息均需用户确认
        // 开发者妥善保管用户快速填写的头像昵称，避免重复弹窗
        wx.getUserProfile(
          desc: '用于完善用户资料', // 声明获取用户个人信息后的用途，后续会展示在弹窗中，请谨慎填写
          success: res => 
            console.log(res);
            that.doLogin(res);
          
        );
      ,
      doLogin(detail) 
        const self = this;
        if (detail.errMsg === 'getUserProfile:ok') 
          console.log('===', detail);
          const options = wx.getLaunchOptionsSync();
          const scene = options.scene + '';
          if (scene.startsWith('CRLAND:')) 
            detail.userInfo.scene = scene.substr(7);
          
          requestLogin().then(async data => 
            console.log('========', detail.userInfo);
            const obj = 
              ...detail.userInfo,
              userInfo: detail.rawData,
              code: data.code
            ;
            const  code, result  = await this.$api.user.login(obj);
            if (code === 200) 
              uni.setStorageSync('userInfo', JSON.stringify(detail.userInfo));
              uni.setStorageSync('token', result.token);
              uni.setStorageSync('userId', result.userId);
              this.hasLogin =true;
              uni.switchTab(
                url: '/pages/index/index'
              );
             else 
              uni.showModal(
                title: '提示',
                content: e.msg || '登录失败',
                showCancel: false,
                confirmText: '确定',
                success: res => 
              );
            
          );
        
      
    
  ;

后端代码

后端只需要拿到code就可以，code不能二次使用

const express = require('express')
const http = require('https')
const router = express.Router()
const mongoose = require('mongoose')
const qs = require('querystring')
const User = require('../models/User') //引入模块模型
const vertoken = require('../utils/token') //引入token
const wx = require('../config/wx')

// 登录
router.post('/login', (_req, _res) => 
  console.log(_req.body, ' 页面传入参数')
  let user = Object.assign(, _req.body)
  var query = 
    appid: wx.appid,
    secret: wx.secret,
    js_code: _req.body.code,
    grant_type: 'authorization_code',
  
  var content = qs.stringify(query)
  var options = 
    hostname: 'api.weixin.qq.com',
    port: '',
    path: '/sns/jscode2session?' + content,
    method: 'GET',
    header: 
      'content-type': 'application/x-www-form-urlencoded;charset=UTF-8',
    ,
  

  var req = http.request(options, function (res) 
    res.on('data', function (_data) 
      console.log('_data: ', _data)

      let parsData = JSON.parse(_data.toString())
      const  openid  = parsData
      User.find(
        
          openid,
        ,
        (err, users) => 
          if (users && users.length > 0) 
            vertoken.setToken(users[0]._id, users[0].openid).then((token) => 
              _res.json(
                code: 200,
                result: 
                  token,
                  userId:users[0]._id
                ,
                message: '登录成功',
              )
            )
           else 
            user.openid = openid
            new User(user).save().then((val) => 
              vertoken.setToken(val._id, openid).then((token) => 
                _res.json(
                  code: 200,
                  result: 
                    token,
                    userId:val._id
                  ,
                  message: '登录成功',
                )
              )
            )
          
        
      )
    )
  )

  req.on('error', function (e) 
    console.log('problem with request: ' + e.message)
  )

  req.end()
)

module.exports = router

完整代码

前端
node服务端