Nodejs实现的一个静态服务器实例_Javascript教程-查字典教程网
Nodejs实现的一个静态服务器实例
Nodejs实现的一个静态服务器实例
发布时间:2016-12-30 来源:查字典编辑
摘要: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:复制代码代码...

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:

复制代码 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

复制代码 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

复制代码 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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