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var http = require("http");//获取http对象
var url = require("url");//获取url对象
//http、url都是系统自带的模块，而下面的requestHandlers是我们手动编写的模块，对应当前目录下的requestHandlers.js文件
var requestHandlers = require("./requestHandlers");
//onRequest函数，用于处理http请求，不同的url请求交由不同的函数进行处理
function onRequest(request, response){
var pathname = url.parse(request.url).pathname;//获取请求的URL
//requestHandlers的handle属性又是一个对象，该对象包含多组属性：属性值，属性名对应uri，属性值对应处理函数，详见requestHandlers.js
if(typeof requestHandlers.handle[pathname] === "function")
requestHandlers.handle[pathname](request, response);
else {
console.log("No request handler found for " + pathname);
response.writeHead(404, {"Content-Type": "text/html;charset=utf-8"});
response.write("您访问的页面不存在！访问<a href=‘/‘>首页</a>");
response.end();
}
}
var server = http.createServer(onRequest);//函数onRequest作为createServer的参数，这样浏览器每发送一次请求，服务器中该函数都会被调用一次
server.listen(8888);
//上面两句可以合写成http.createServer(onRequest).listen(8888);
var handle = {};
var formidable = require("formidable");
handle["/"] = start;
handle["/start"] = start;
handle["/upload"] = upload;
function start(request, response) {
var body = ‘<html>‘+
‘<head>‘+
‘<meta http-equiv="Content-Type" content="text/html; ‘+
‘charset=UTF-8" />‘+
‘</head>‘+
‘<body>‘+
‘<form action="/upload" method="post">‘+
‘学号：<input type="text" name="id" /><br /><br />‘+
‘姓名：<input type="text" name="name" /><br /><br />‘+
‘<input type="submit" value="提交" />‘+
‘</form>‘+
‘</body>‘+
‘</html>‘;
response.writeHead(200, {"Content-Type": "text/html"});
response.write(body);
response.end();
}
function upload(request, response) {
var form = new formidable.IncomingForm();
form.parse(request, function(error, fields, files) {
console.log("id:" + fields.id);
console.log("name:" + fields.name);
response.writeHead(200, {"Content-Type": "text/html;charset=utf-8"});
response.write("id:" + fields.id + "<br>");
response.write("name:" + fields.name);
response.end();
});
}
exports.handle = handle;
exports.start = start;
exports.upload = upload;
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原文地址：http://www.cnblogs.com/zouzou-blog/p/5934690.html
