微信开发 (node express 配置)

在这里我记录一下用node express配置微信开发的一些代码

简单的三个页面

app.use('/', routes);
app.use('/users', users);
app.use('/login', login);

routes

这个页面我做的是 用户同意授权，获取code

var express = require('express');
var router = express.Router();
var fetch = require('node-fetch');

/* GET home page. */
router.get('/', function(req, res, next) {
    var appid = 'wx9bf16c912ddec096';
    var redirect_uri = "http%3A%2F%2Fwww.frombottomto.top/login";
    var scope = 'snsapi_userinfo';//两种方式
    var state = 'STATE';//非必须

    var url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid='+appid+'&redirect_uri='+redirect_uri+'&response_type=code&scope='+scope+'&state='+state+'#wechat_redirect';
    res.redirect(url);
});

module.exports = router;

login

这个页面获取的是 拉取用户信息

var express = require('express');
var router = express.Router();
var fetch = require('node-fetch');

router.get('/', function(req, res, next) {
    var code = req.query.code;
    var appid = 'wx9bf16c912ddec096';
    var secret = '6841a50bd9b6e99c77d0e052e5e5eb2a';
    var url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='+appid+'&secret=6841a50bd9b6e99c77d0e052e5e5eb2a&code='+code+'&grant_type=authorization_code';

    //获取code后，请求以下链接获取access_token：  https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code 
    //获取json后get: https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN 

    fetch(url).then(function(res){
        return res.json()
    }).then(function(json){
        var accesstoken = json.access_token;
        var openid = json.openid;
        var tokenurl = 'https://api.weixin.qq.com/sns/userinfo?access_token='+accesstoken+'&openid='+openid+'&lang=zh_CN ';
        return fetch(tokenurl).then(function(res){
            return res.json()
        })
    }).then(function(json){
        res.send(json)
    })

});

module.exports = router;

users

这个页面获取的是** JS-SDK的 signature**

var express = require('express');
var router = express.Router();
var fetch = require('node-fetch');
var sha1 = require('sha1');

router.get('/', function(req, res, next) {
    var appid = 'wx9bf16c912ddec096';
    var secret = '6841a50bd9b6e99c77d0e052e5e5eb2a';
    var aturl = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='+appid+'&secret='+secret;
    var access_token;

    fetch(aturl).then(function(res){
        return res.json()
    }).then(function(json){
        access_token = json.access_token;
        var ticketurl = 'https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token='+access_token+'&type=jsapi'
        //https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi

        var jsticket;
        fetch(ticketurl).then(function(res){
            return res.json()
        }).then(function(json){
            jsticket = json.ticket;
            console.log(req.originalUrl)
            var string1 = 'jsapi_ticket='+jsticket+'&noncestr=Wm3WZYTPz0wzccnW×tamp=1414587457&url=http://www.frombottomto.top'+req.originalUrl;
            var signature = sha1(string1);
            res.render('users',{signature:signature})
        })
        
    })
    //https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET
});

module.exports = router;

另外前端渲染页面，记录的是调取微信api

users.ejs

  
    
    
    
  
  
    
你好
    
Welcome to 微信