服务器端node.js

实现一个文件服务器var fs = require(‘fs‘);var url = require(‘url‘);var path = require(‘path‘);var http = require(‘http‘);// 从命令行参数获取根目录，默认为当前目录var root = path.resolve(process.argv[2]||‘.‘);// 创建服务器var server = http.createServer(function(req,res) { ???var pathname = url.parse(req.url).pathname; ???var filepath = path.join(root,pathname); ???//获取文件状态 ???fs.stat(filepath,function(err,stats){ ???????if(!err && stats.isFile()) { ???????????res.writeHead(200); ???????????// 将文件流导向res ???????????fs.createReadStream(filepath).pipe(res); ???????} else { ???????????// 发送404响应 ???????????res.writeHead(404); ???????????res.end(‘404 Not Found‘); ???????} ???})});server.listen(8080);console.log(‘server is running at http://127.0.0.1:8080/‘);