1 var http = require("http");
2 var url = require("url");
3 var fs = require("fs");
4 var path = require("path");
5
6 http.createServer(function(req, res) {
7 //得到用户的路径
8 var pathname = url.parse(req.url).pathname;
9 //默认首页
10 if (pathname == "/") {
11 pathname = "index.html";
12 }
13 //拓展名
14 var extname = path.extname(pathname);
15
16 //真的读取这个文件
17 fs.readFile("./" + pathname, function(err, data) {
18 if (err) {
19 //如果此文件不存在，就应该用404返回
20 fs.readFile("./static/404.html", function(err, data) {
21 res.writeHead(404, {
22 "Content-type": "text/html;charset=UTF8"
23 });
24 res.end(data);
25 });
26 return;
27 };
28 //MIME类型，就是
29 //网页文件： text/html
30 //jpg文件 : image/jpg
31 var mime = getMime(extname);
32 res.writeHead(200, {
33 "Content-type": mime
34 });
35 res.end(data);
36 });
37
38 }).listen(3000, "127.0.0.1");
39
40 function getMime(extname) {
41 switch (extname) {
42 case ".html":
43 return "text/html";
44 break;
45 case ".jpg":
46 return "image/jpg";
47 break;
48 case ".css":
49 return "text/css";
50 break;