创建web服务器

var http = require(‘http‘);var url=require(‘url‘);var fs=require(‘fs‘);var mine=require(‘./mime‘).types;var path=require(‘path‘);//创建服务器 ?http.createServer(function(request, response) { ?????var pathname = url.parse(request.url).pathname; ???var realPath = path.join("assets", pathname); ???????var ext = path.extname(realPath); ???if (ext == "") { ???????ext = ".html"; ???????realPath += "index.html"; ????} ???????ext = ext ? ext.slice(1) : ‘unknown‘; ???fs.exists(realPath, function (exists) { ???????if (!exists) { ???????????response.writeHead(404, { ???????????????‘Content-Type‘: ‘text/plain‘ ???????????}); ???????????response.write("This request URL " + pathname + " was not found on this server."); ???????????response.end(); ???????} else { ???????????fs.readFile(realPath, "binary", function (err, file) { ???????????????if (err) { ???????????????????response.writeHead(500, { ???????????????????????‘Content-Type‘: ‘text/plain‘ ???????????????????}); ???????????????????response.end(err); ???????????????} else { ???????????????????var contentType = mine[ext] || "text/plain"; ???????????????????response.writeHead(200, { ???????????????????????‘Content-Type‘: contentType ???????????????????}); ???????????????????response.write(file, "binary"); ???????????????????response.end(); ???????????????} ???????????}); ???????} ???});}).listen(8080); 

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", ?"mp3": "audio/mpeg", ?"ogg": "audio/ogg", ?"zip": "application/zip"};