Install NodeJS
~$ sudo apt-get install nodejs
Install npm
~$ sudo apt-get install npm
Create node project
Create project directory
~$ mkdir Desktop/NodeProject
Initialization project
~/Desktop/NodeProject$ npm init -y
~/Desktop/NodeProject$ npm i --save express
~/Desktop/NodeProject$ tree -L 1
.
├── node_modules
├── package.json
Create a directory to put html static page, put js directory src:
~/Desktop/NodeProject$ mkdir html
~/Desktop/NodeProject$ mkdir src
Put index.html in the static web directory html:
<html>
<head>
<meta charset="utf-8"/>
<title></title>
<style>
div{
width:100px;
height:100px;
background:pink;
}
</style>
</head>
<body>
<h1>This is a box</h1>
<form action="http://localhost:8080/login" method="POST">
账号<input type="text" name="name"/><br>
密码<input type="password" name="password"/><br>
<input type="submit" value="登录"/>
</form>
</body>
</html>
Write server file server.js
// 引入express框架
var express=require("express");
var app=express();
// 指定静态网页目录，并监听8080端口
app.use(express.static("html")).listen(8080);
// 引入body-parser
app.use(require('body-parser')());
// /login接口
app.post('/login',function(req,res){
if(req.body.name == 'tom' && req.body.password == '123'){
res.writeHead(200,{'Content-Type':'text/plain;charset=utf-8'});
res.end("登录成功");
}else{
res.writeHead(400,{'Content-Type':'text/plain;charset=utf-8'});
res.end("登录失败");
}
console.log(req.body.name);
console.log(req.body.password);
});
// /hello接口
app.get('/hello',(req,res)=>{
res.writeHead(200,{'Content-Type':'text/plain;charset=utf-8'});
res.end("Hello world");
});
Start service
~/Desktop/NodeProject$ node src/server.js
Open the browser and you can visit http: // localhost: 8080.
