在angular度全堆发生器上启用CORS？

好吧，我有一个EC2实例启动并运行nodeJs，并表示我正在使用生成器的香草安装，我的app.js文件如下所示：

/** * Main application file */ 'use strict'; // Set default node environment to development process.env.NODE_ENV = process.env.NODE_ENV || 'development'; var express = require('express'); var mongoose = require('mongoose'); var config = require('./config/environment'); // Connect to database mongoose.connect(config.mongo.uri, config.mongo.options); // Populate DB with sample data //require('./config/seed'); // Setup server var app = express(); var server = require('http').createServer(app); var socketio = require('socket.io')(server, { serveClient: (config.env === 'production') ? false : true, path: '/socket.io-client' }); require('./config/socketio')(socketio); require('./config/express')(app); require('./routes')(app); // Start server server.listen(config.port, config.ip, function () { console.log('Express server listening on %d, in %s mode', config.port, app.get('env')); }); // Expose app exports = module.exports = app; 

在require（'./ routes'）（app）中声明的route.js; 如下：

 /** * Main application routes */ 'use strict'; var errors = require('./components/errors'); var cors = require('./config/cors'); module.exports = function(app) { /* app.all('*', function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); next(); }); app.all('/', function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); next(); }); app.use(function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); next(); }); */ // Insert routes below app.use('/api/things', require('./api/thing')); app.use('/api/users', require('./api/user')); app.use('/auth', require('./auth')); // All undefined asset or api routes should return a 404 app.route('/:url(api|auth|components|app|bower_components|assets)/*') .get(errors[404]); // All other routes should redirect to the index.html app.route('/*') .get(function(req, res) { res.sendfile(app.get('appPath') + '/index.html'); }); }; 

在require（'./ express'）（app）中声明的express.js; 如下：

 /** * Express configuration */ 'use strict'; var express = require('express'); var favicon = require('serve-favicon'); var morgan = require('morgan'); var compression = require('compression'); var bodyParser = require('body-parser'); var methodOverride = require('method-override'); var cookieParser = require('cookie-parser'); var errorHandler = require('errorhandler'); var path = require('path'); var config = require('./environment'); var passport = require('passport'); module.exports = function(app) { var env = app.get('env'); app.set('views', config.root + '/server/views'); app.engine('html', require('ejs').renderFile); app.set('view engine', 'html'); app.use(compression()); app.use(bodyParser.urlencoded({ extended: false })); app.use(bodyParser.json()); app.use(methodOverride()); app.use(cookieParser()); app.use(passport.initialize()); if ('production' === env) { app.use(favicon(path.join(config.root, 'public', 'favicon.ico'))); app.use(express.static(path.join(config.root, 'public'))); app.set('appPath', config.root + '/public'); app.use(morgan('dev')); } if ('development' === env || 'test' === env) { app.use(require('connect-livereload')()); app.use(express.static(path.join(config.root, '.tmp'))); app.use(express.static(path.join(config.root, 'client'))); app.set('appPath', 'client'); app.use(morgan('dev')); app.use(errorHandler()); // Error handler - has to be last } }; 

但无论我在哪里宣布这些：

  app.all('*', function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); next(); }); app.all('/', function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); next(); }); app.use(function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); next(); }); 

它不工作我得到：

 XMLHttpRequest cannot load http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.financ…5.NYM%22)&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:9000' is therefore not allowed access. 

Answer 1

您需要在您的node-express应用程序中启用CORS中间件。 你可以通过添加

 "cors": "^2.5.1", 

到package.json和app模块中的依赖关系，

 var cors = require('cors'); //add cors to do the cross site requests app.use(cors());