在web服务中，提交表达和数据时，get和post是非常常用的两种服务。现用nodejs实现这两个服务。
一、get操作
app.html：
<html> <head> <title>登陆页面</title> </head> <body> <form action="check" method="get"> <p>First name: <input type="text" name="fname" /></p> <p>Last name: <input type="text" name="lname" /></p> <input type="submit" value="Submit" /> </form> </body> </html>
app.js
var http = require('http'); var urllib = require('url'); var fs = require('fs'); var html = fs.readFileSync('./app.html'); var app = http.createServer(function(req, res){ var params = urllib.parse(req.url, true); if (params.pathname === '/login') { res.end(html); } else if (params.pathname === '/check') { var params = urllib.parse(req.url, true); res.end(JSON.stringify(params.query)); } }); app.listen(5678, function(){ console.log('server is listening on 5678'); });
二、post操作
post的实现相对比较繁琐，可以特别注意下buffer.copy这个函数。
app.html：
<html> <head> <title>登陆页面</title> </head> <body> <form action="check" method="post"> <p>First name: <input type="text" name="fname" /></p> <p>Last name: <input type="text" name="lname" /></p> <input type="submit" value="Submit" /> </form> </body> </html>
app.js：
var http = require('http'); var urllib = require('url'); var fs = require('fs'); var querystring = require('querystring'); var html = fs.readFileSync('./app.html'); var app = http.createServer(function(req, res){ var params = urllib.parse(req.url, true); if (params.pathname === '/login') { res.end(html); } else if (params.pathname === '/check') { var chunks = []; var length = 0; var rows = null; req.on('data', function(data){ chunks.push(data); length += data.length; }) req.on('end', function(){ var rows = new Buffer(length); var len = 0; for (var i = 0, il = chunks.length; i < il; i++) { chunks[i].copy(rows, len); len += chunks[i].length; } var args = querystring.parse(rows.toString()); res.end(JSON.stringify(args)); }) } }); app.listen(5678, function(){ console.log('server is listening on 5678'); });