如何启动expressjs（nodejs）作为生产模式
我想在生产模式下启动我的快递服务器。 我试着用下面的命令来运行它
sudo NODE_ENV=production node server.js 而
sudo node server.js
在开发模式下启动我的服务器没有任何问题。 第一条命令在生产模式下启动服务器，但首页打开空白，顶部有黑条。 我有2个请求失败
Request URL:http://localhost:3000/public/build/js/dist.min.js Request Method:GET Status Code:404 Not Found\ Request URL:http://localhost:3000/public/build/css/dist.min.css Request Method:GET Status Code:404 Not Found
我的确有所有的要求在开发模式中取得成功。 我无法找出这些请求的来源，而在开发模式中没有这样的文件或请求。 我正在研究mean.io的锅炉代码。
//server/config/config.js 'use strict'; // Utilize Lo-Dash utility library var _ = require('lodash'), fs = require('fs'); // Load configurations // Set the node environment variable if not set before process.env.NODE_ENV = ~fs.readdirSync('./server/config/env').map(function(file) { return file.slice(0, -3); }).indexOf(process.env.NODE_ENV) ? process.env.NODE_ENV : 'development'; // Extend the base configuration in all.js with environment // specific configuration module.exports = _.extend( require('./env/all'), require('./env/' + process.env.NODE_ENV) || {} );
以下是express.js
//server/config/express.js 'use strict'; /** * Module dependencies. */ var express = require('express'), favicon = require('static-favicon'), morgan = require('morgan'), compression = require('compression'), bodyParser = require('body-parser'), methodOverride = require('method-override'), cookieParser = require('cookie-parser'), session = require('express-session'), errorHandler = require('errorhandler'), mean = require('meanio'), consolidate = require('consolidate'), mongoStore = require('mean-connect-mongo')(session), flash = require('connect-flash'), helpers = require('view-helpers'), config = require('./config'), expressValidator = require('express-validator'), appPath = process.cwd(), util = require('./util'), assetmanager = require('assetmanager'), fs = require('fs'), Grid = require('gridfs-stream'); module.exports = function(app, passport, db) { var gfs = new Grid(db.connections[0].db, db.mongo); app.set('showStackError', true); // Prettify HTML app.locals.pretty = true; // cache=memory or swig dies in NODE_ENV=production app.locals.cache = 'memory'; // Should be placed before express.static // To ensure that all assets and data are compressed (utilize bandwidth) app.use(compression({ // Levels are specified in a range of 0 to 9, where-as 0 is // no compression and 9 is best compression, but slowest level: 9 })); // Only use logger for development environment if (process.env.NODE_ENV === 'development') { app.use(morgan('dev')); } // assign the template engine to .html files app.engine('html', consolidate[config.templateEngine]); // set .html as the default extension app.set('view engine', 'html'); // Set views path, template engine and default layout app.set('views', config.root + '/server/views'); // Enable jsonp app.enable('jsonp callback'); // The cookieParser should be above session app.use(cookieParser()); // Request body parsing middleware should be above methodOverride app.use(expressValidator()); app.use(bodyParser()); app.use(methodOverride()); app.use(cookieParser()); // Import your asset file var assets = require('./assets.json'); assetmanager.init({ js: assets.js, css: assets.css, debug: (process.env.NODE_ENV !== 'production'), webroot: 'public/public' }); // Add assets to local variables app.use(function(req, res, next) { res.locals.assets = assetmanager.assets; next(); }); // Express/Mongo session storage app.use(session({ secret: config.sessionSecret, store: new mongoStore({ db: db.connection.db, collection: config.sessionCollection }) })); // Dynamic helpers app.use(helpers(config.app.name)); // Use passport session app.use(passport.initialize()); app.use(passport.session()); //mean middleware from modules before routes app.use(mean.chainware.before); // Connect flash for flash messages app.use(flash()); // Setting the fav icon and static folder app.use(favicon()); app.get('/modules/aggregated.js', function(req, res) { res.setHeader('content-type', 'text/javascript'); res.send(mean.aggregated.js); }); function themeHandler(req, res) { res.setHeader('content-type', 'text/css'); gfs.files.findOne({ filename: 'theme.css' }, function(err, file) { if (!file) { fs.createReadStream(process.cwd() + '/public/system/lib/bootstrap/dist/css/bootstrap.css').pipe(res); } else { // streaming to gridfs var readstream = gfs.createReadStream({ filename: 'theme.css' }); //error handling, eg file does not exist readstream.on('error', function(err) { console.log('An error occurred!', err.message); throw err; }); readstream.pipe(res); } }); } // We override this file to allow us to swap themes // We keep the same public path so we can make use of the bootstrap assets app.get('/public/system/lib/bootstrap/dist/css/bootstrap.css', themeHandler); app.get('/modules/aggregated.css', function(req, res) { res.setHeader('content-type', 'text/css'); res.send(mean.aggregated.css); }); app.use('/public', express.static(config.root + '/public')); mean.events.on('modulesFound', function() { for (var name in mean.modules) { app.use('/' + name, express.static(config.root + '/' + mean.modules[name].source + '/' + name + '/public')); } function bootstrapRoutes() { // Skip the app/routes/middlewares directory as it is meant to be // used and shared by routes as further middlewares and is not a // route by itself util.walk(appPath + '/server/routes', 'middlewares', function(path) { require(path)(app, passport); }); } bootstrapRoutes(); //mean middlware from modules after routes app.use(mean.chainware.after); // Assume "not found" in the error msgs is a 404. this is somewhat // silly, but valid, you can do whatever you like, set properties, // use instanceof etc. app.use(function(err, req, res, next) { // Treat as 404 if (~err.message.indexOf('not found')) return next(); // Log it console.error(err.stack); // Error page res.status(500).render('500', { error: err.stack }); }); // Assume 404 since no middleware responded app.use(function(req, res) { res.status(404).render('404', { url: req.originalUrl, error: 'Not found' }); }); // Error handler - has to be last if (process.env.NODE_ENV === 'development') { app.use(errorHandler()); } }); };
从mean.io的代码开始，我没有在上面的文件中进行更改。 
这是通过启动服务器之前运行以下命令解决
grunt cssmin grunt uglify