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Nodejs实现的一个静态服务器实例

时间:2024-3-2 10:56     作者:韩俊     分类: Javascript


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:

/**

 * 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(/bgzipb/)) { response.writeHead(200, "Ok", {'Content-Encoding': 'gzip'}); raw.pipe(zlib.createGzip()).pipe(response); } else if (matched && acceptEncoding.match(/bdeflateb/)) { 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

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

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" };

标签: javascript

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