Nodejs实现的一个静态服务器实例

参考cnodejs.org上面的静态服务器例子，写了下面的一个nodejs静态服务器例子，里面包含cache,压缩，贴代码如下：

代码如下:


/**
 * 静态文件服务器测试例子
 * User: xuwm
 * Date: 13-5-17
 * Time: 上午8:38
 * To change this template use File | Settings | File Templates.
 */
var port=3333;
var http = require("http");
var url = require("url");
var fs = require("fs");
var path = require("path");
var mime = require("./mime").types;
var config = require("./config");
var zlib = require("zlib");
//创建http服务端
var server=http.createServer(function(request,response){
    var obj= url.parse(request.url);
    response.setHeader("Server","Node/V8");
    console.log(obj);
    var pathname=obj.pathname;
    if(pathname.slice(-1)==="/"){
        pathname=pathname+config.Welcome.file;   //默认取当前默认下的index.html
    }
    var realPath = path.join("assets", path.normalize(pathname.replace(/../g, "")));
    console.log(realPath) ;
    var pathHandle=function(realPath){
    //用fs.stat方法获取文件
        fs.stat(realPath,function(err,stats){
            if(err){
                response.writeHead(404,"not found",{'Content-Type':'text/plain'});
                response.write("the request "+realPath+" is not found");
                response.end();
            }else{
                if(stats.isDirectory()){
                }else{
                    var ext = path.extname(realPath);
                    ext = ext ? ext.slice(1) : 'unknown';
                    var contentType = mime[ext] || "text/plain";
                    response.setHeader("Content-Type", contentType);

                    var lastModified = stats.mtime.toUTCString();                     var ifModifiedSince = "If-Modified-Since".toLowerCase();                     response.setHeader("Last-Modified", lastModified);
                    if (ext.match(config.Expires.fileMatch)) {                         var expires = new Date();                         expires.setTime(expires.getTime() + config.Expires.maxAge * 1000);                         response.setHeader("Expires", expires.toUTCString());                         response.setHeader("Cache-Control", "max-age=" + config.Expires.maxAge);                     }
                    if (request.headers[ifModifiedSince] && lastModified == request.headers[ifModifiedSince]) {                         console.log("从浏览器cache里取")                         response.writeHead(304, "Not Modified");                         response.end();                     } else {                         var raw = fs.createReadStream(realPath);                         var acceptEncoding = request.headers['accept-encoding'] || "";                         var matched = ext.match(config.Compress.match);
                        if (matched && acceptEncoding.match(/gzip/)) {                             response.writeHead(200, "Ok", {'Content-Encoding': 'gzip'});                             raw.pipe(zlib.createGzip()).pipe(response);                         } else if (matched && acceptEncoding.match(/deflate/)) {                             response.writeHead(200, "Ok", {'Content-Encoding': 'deflate'});                             raw.pipe(zlib.createDeflate()).pipe(response);                         } else {                             response.writeHead(200, "Ok");                             raw.pipe(response);                         }                     }                 }             }         });
    }     pathHandle(realPath); }); server.listen(port); console.log("http server run in port:"+port);


首先需要在JS文件里创建一个assets的文件夹，里面放入你要浏览的静态文件，比如，index.html,demo.js等。
运行方式为：在命令行里切换到上面的JS的文件目录，然后输入 node JS文件名
浏览器内输入http://localhost:3333/就会看到效果。
--补上上面代码里缺少的两个模块
mime.js


代码如下:


exports.types = {

  "css": "text/css",
  "gif": "image/gif",
  "html": "text/html",
  "ico": "image/x-icon",
  "jpeg": "image/jpeg",
  "jpg": "image/jpeg",
  "js": "text/javascript",
  "json": "application/json",
  "pdf": "application/pdf",
  "png": "image/png",
  "svg": "image/svg+xml",
  "swf": "application/x-shockwave-flash",
  "tiff": "image/tiff",
  "txt": "text/plain",
  "wav": "audio/x-wav",
  "wma": "audio/x-ms-wma",
  "wmv": "video/x-ms-wmv",
  "xml": "text/xml" };


config.js


代码如下:


exports.Expires = {
    fileMatch: /^(gif|png|jpg|js|css)$/ig,
    maxAge: 60 * 60 * 24 * 365
};

exports.Compress = {     match: /css|js|html/ig };
exports.Welcome = {     file: "index.html" };




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