Hello world

创建项目hello

mkdir hello
cd hello

安装express

npm install express --save

主代码文件main.js

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

app.get('/', function (req, res) {
   res.send('Hello World');
})

var server = app.listen(8081, function () {

  var host = server.address().address
  var port = server.address().port

  console.log("应用实例，访问地址为 http://%s:%s", host, port)

})

启动并测试

node main.js

node express简单入门

Hello world