index.js

const express = require('express')
const app = express()

var WechatAPI = require('wechat-api');
var token ='Innocellence'
var appid = 'wxd7bf18ecdc988273'
var appsecret = 'bd585de3f32746b7d3fc6044235248fd'
var encodingAESKey = 'EluZag9AnbjTapoGu44lcIHmVfoPl2DCqzpNcwbTfHG'

var api = new WechatAPI(appid, appsecret);

var wechat = require('wechat');
var config = {
  token: token,
  appid: appid,
  encodingAESKey: encodingAESKey,
  checkSignature: true // 可选，默认为true。由于微信公众平台接口调试工具在明文模式下不发送签名，所以如要使用该测试工具，请将其设置为false
};

app.use(express.query());
app.use('/wechat', wechat(config, function (req, res, next) {
  // 微信输入信息都在req.weixin上
  var message = req.weixin;
  if (message.FromUserName === 'diaosi') {
    // 回复屌丝(普通回复)
    res.reply('hehe');
  } else if (message.FromUserName === 'text') {
    //你也可以这样回复text类型的信息
    res.reply({
      content: 'text object',
      type: 'text'
    });
  } else if (message.FromUserName === 'hehe') {
    // 回复一段音乐
    res.reply({
      type: "music",
      content: {
        title: "来段音乐吧",
        description: "一无所有",
        musicUrl: "http://mp3.com/xx.mp3",
        hqMusicUrl: "http://mp3.com/xx.mp3",
        thumbMediaId: "thisThumbMediaId"
      }
    });
  } else {
    // 回复高富帅(图文回复)
    res.reply([
      {
        title: '你来我家接我吧',
        description: '这是女神与高富帅之间的对话',
        picurl: 'http://nodeapi.cloudfoundry.com/qrcode.jpg',
        url: 'http://nodeapi.cloudfoundry.com/'
      }
    ]);
  }
}));

//引入http模块
var http = require("http");
//设置主机名
var hostName = '127.0.0.1';
//设置端口
var port = 808;
//创建服务
var server = http.createServer(function(req,res){
    res.setHeader('Content-Type','text/plain');
    res.end("hello nodejs");

});
server.listen(port,hostName,function(){
    console.log(`服务器运行在http://${hostName}:${port}`);
});