Nodejs實現的一個靜態服務器實例

2024-05-06 16:11:32

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這篇文章主要介紹了Nodejs實現的一個靜態服務器實例,本文實現的靜態服務器實例包含cache功能、壓縮功能等,需要的朋友可以參考下

參考cnodejs.org上面的靜態服務器例子，寫了下面的一個nodejs靜態服務器例子，里面包含cache,壓縮，貼代碼如下：

復制代碼代碼如下:

/**
* 靜態文件服務器測試例子
* 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");
//創建http服務端
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;   //默認取當前默認下的index.html
    }
    var realPath = path.join("assets", path.normalize(pathname.replace(//././g, "")));
    console.log(realPath) ;
    var pathHandle=function(realPath){
    //用fs.stat方法獲取文件
        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("從瀏覽器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(//bgzip/b/)) {
                            response.writeHead(200, "Ok", {'Content-Encoding': 'gzip'});
                            raw.pipe(zlib.createGzip()).pipe(response);
                        } else if (matched && acceptEncoding.match(//bdeflate/b/)) {
                            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文件里創建一個assets的文件夾，里面放入你要瀏覽的靜態文件，比如，index.html,demo.js等。

運行方式為：在命令行里切換到上面的JS的文件目錄，然后輸入 node JS文件名

瀏覽器內輸入http://localhost:3333/就會看到效果。

--補上上面代碼里缺少的兩個模塊

mime.js

復制代碼代碼如下:

exports.types = {

"css": "text/css",

"gif": "image/gif",

"html": "text/html",

"ico": "image/x-icon",