nodejs代理本地api调用外部restapi服务(不express.js)

我正在使用nodejs和默认项目文件/scripts/web-server.js运行angularjs(angular-seed)的演示应用程序(见下文)

我希望节点js代理/redirect到/ api的所有本地调用到外部Rest api端点http://www.mywebsite.com/api为了避免跨域起源策略。

我应该如何编辑下面的web-server.js来实现代理redirect?

我发现的所有例子都使用express.js。 我只使用node.js作为开发环境,所以我没有兴趣使用express.js。

默认web-server.js nodejs脚本:

#!/usr/bin/env node var util = require('util'), http = require('http'), fs = require('fs'), url = require('url'), events = require('events'), request = require('request'); ; var DEFAULT_PORT = 8000; function main(argv) { new HttpServer({ 'GET': createServlet(StaticServlet), 'HEAD': createServlet(StaticServlet) }).start(Number(argv[2]) || DEFAULT_PORT); } function escapeHtml(value) { return value.toString(). replace('', '>'). replace('"', '"'); } function createServlet(Class) { var servlet = new Class(); return servlet.handleRequest.bind(servlet); } /** * An Http server implementation that uses a map of methods to decide * action routing. * * @param {Object} Map of method => Handler function */ function HttpServer(handlers) { this.handlers = handlers; this.server = http.createServer(this.handleRequest_.bind(this)); } HttpServer.prototype.start = function(port) { this.port = port; this.server.listen(port); util.puts('Http Server running at http://localhost:' + port + '/'); }; HttpServer.prototype.parseUrl_ = function(urlString) { var parsed = url.parse(urlString); parsed.pathname = url.resolve('/', parsed.pathname); return url.parse(url.format(parsed), true); }; HttpServer.prototype.handleRequest_ = function(req, res) { var logEntry = req.method + ' ' + req.url; if (req.headers['user-agent']) { logEntry += ' ' + req.headers['user-agent']; } util.puts(logEntry); req.url = this.parseUrl_(req.url); var handler = this.handlers[req.method]; if (!handler) { res.writeHead(501); res.end(); } else { handler.call(this, req, res); } }; /** * Handles static content. */ function StaticServlet() {} StaticServlet.MimeMap = { 'txt': 'text/plain', 'html': 'text/html', 'css': 'text/css', 'xml': 'application/xml', 'json': 'application/json', 'js': 'application/javascript', 'jpg': 'image/jpeg', 'jpeg': 'image/jpeg', 'gif': 'image/gif', 'png': 'image/png',  'svg': 'image/svg+xml' }; StaticServlet.prototype.handleRequest = function(req, res) { var self = this; var path = ('./' + req.url.pathname).replace('//','/').replace(/%(..)/g, function(match, hex){ return String.fromCharCode(parseInt(hex, 16)); }); var parts = path.split('/'); if (parts[parts.length-1].charAt(0) === '.') return self.sendForbidden_(req, res, path); fs.stat(path, function(err, stat) { if (err) return self.sendMissing_(req, res, path); if (stat.isDirectory()) return self.sendDirectory_(req, res, path); return self.sendFile_(req, res, path); }); } StaticServlet.prototype.sendError_ = function(req, res, error) { res.writeHead(500, { 'Content-Type': 'text/html' }); res.write('\n'); res.write('Internal Server Error\n'); res.write(' 

内部服务器错误

“); res.write(”
  '+ escapeHtml(util.inspect(error))+' 

“); util.puts('500内部服务器错误'); util.puts(util.inspect(误差)); }; staticServlet.prototype.sendMissing_ = function(req,res,path){path = path.substring(1); res.writeHead(404,{'Content-Type':'text / html'}); res.write( '\ n'); res.write('404 Not Found \ n'); res.write(”

未find

“); res.write('

在此服务器上未find请求的URL“+ escapeHtml(path)+”。

'); 重发(); util.puts('404 Not Found:'+ path); }; staticServlet.prototype.sendForbidden_​​ = function(req,res,path){path = path.substring(1); res.writeHead(403,{'Content-Type':'text / html'}); res.write( '\ n'); res.write('403 Forbidden \ n'); res.write(”

被禁止

“); res.write('

您无权访问此服务器上的“+ escapeHtml(path)+”。

'); 重发(); util.puts('403 Forbidden:'+ path); }; staticServlet.prototype.sendRedirect_ = function(req,res,redirectUrl){res.writeHead(301,{'Content-Type':'text / html','Location':redirectUrl}); res.write( '\ n'); res.write('301永久移动\ n'); res.write(”

永久移动

“); res.write('

文件已移到此处。

'); 重发(); util.puts('301永久移动:'+ redirectUrl); }; StaticServlet.prototype.sendFile_ = function(req,res,path){var self = this; var file = fs.createReadStream(path); res.writeHead(200,{'Content-Type':StaticServlet。MimeMap [path.split('。')。pop()] ||'text / plain'}); if(req.method ==='HEAD'){res.end(); } else {file.on('data',res.write.bind(res)); file.on('close',function(){res.end();}); file.on('error',function(error){self.sendError_(req,res,error);}); }}; StaticServlet.prototype.sendDirectory_ = function(req,res,path){var self = this; if(path.match(/ [^ \ /] $ /)){req.url.pathname + ='/'; var redirectUrl = url.format(url.parse(url.format(req.url))); 返回self.sendRedirect_(req,res,redirectUrl); 如果(),则返回self.writeDirectoryIndex(req,res,path,[])。 ); var remaining = files.length; files.forEach(function(fileName,index){fs.stat(path +'/'+ fileName,function(err,stat){if(err)return self.sendError_(req,如果(stat.isDirectory()){files [index] = fileName +'/';} if(!( - remaining))return self.writeDirectoryIndex_(req,res,path,files);} );});}); }; staticServlet.prototype.writeDirectoryIndex_ = function(req,res,path,files){path = path.substring(1); res.writeHead(200,{'Content-Type':'text / html'}); if(req.method ==='HEAD'){res.end(); 返回; } res.write('\ n'); res.write(''+ escapeHtml(path)+'\ n'); res.write( '\ n'); res.write('ol {list-style-type:none; font-size:1.2em;} \ n'); res.write( '\ n'); res.write(”

目录:'+ escapeHtml(path)+'

“); res.write(”

    “); files.forEach(function(fileName){if(fileName.charAt(0)!=='。'){res.write('

  1. '+ escapeHtml(fileName)+'
  2. “); }}); res.write(”

“); 重发(); }; //必须是last,main(process.argv);