nodejs 对接微信 express 对接微信

安装引用

npm install express
npm install body-parser
npm install express-xml-bodyparser
npm install axios

使用express框架对接微信

var express = require('express');
var xmlparser = require('express-xml-bodyparser');
var crypto = require('crypto');
var path = require('path');
var bodyParser = require('body-parser');
var app = new express();

app.use(express.static(path.join(__dirname, 'public')));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(xmlparser());

app.get('/', (req, res) => {
    res.end('hello world');
})
//对接验证
app.get('/wx', (req, res) => {

    if (!req.query.signature) {
        res.end('hello,this is handle view');
        return;
    }

    const { signature, timestamp, nonce, echostr } = req.query;
    var token = "mydemo";

    var array = [token, timestamp, nonce];
    array.sort()

    var sha1 = crypto.createHash('sha1');
    var str = array.toString().replace(/,/g, '');
    var hashcode = sha1.update(str).digest('hex');

    if (hashcode == signature) {
        res.end(echostr);
    } else {
        res.end("");
    }

});

//实现你问我答 文本消息回复
app.post('/wx', (req, res) => {

    console.log(req.body);

    const { tousername, fromusername, createtime, msgtype, content } = req.body.xml;

    var xml = `<xml>
        <ToUserName><![CDATA[${fromusername}]]></ToUserName>'
        <FromUserName><![CDATA[${tousername}]]></FromUserName>'
        <CreateTime><![CDATA[${createtime}]]></CreateTime>'
        <MsgType><![CDATA[${msgtype}]]></MsgType>'
        <Content><![CDATA[${content}]]></Content>'
    </xml>`;

    res.end(xml);
});

app.listen(80, '0.0.0.0', () => {
    console.log('listen 80');
})

微信公众号 配置 http://ip或域名/wx