Node Express listen和http createServer區別

• 兩種實現效果相同
• 通過http創建，可以在express基礎上使用更多http功能
• 通過http創建，更便於擴展至https服務器

express:

var express = require('express');
var app = express();

//app.configure, app.use etc

app.listen(80);

http:

var express = require('express'), http = require('http');
var app = express();
var server = http.createServer(app);

//app.configure, app.use etc

server.listen(80);