Nodejs / Express – 启动我的应用程序:express.createServer()已弃用

我下载了一个节点应用程序来testing和玩耍。 我search了一下,发现Express被发现有点过时了。 有人可以帮我修复实施的代码吗?

这是代码

/** * Module dependencies. */ // base dependencies for app var express = require('express') , routes = require('./routes') , DB = require('./accessDB').AccessDB , passport = require('passport') , mongoose = require('mongoose') , mongoStore = require('connect-mongodb'); var app = module.exports = express.createServer(); global.app = app; var DB = require('./accessDB'); var conn = 'mongodb://localhost/CrowdNotes'; var db; // SocketIO Configuration //var io = require('socket.io').listen(app); // //io.sockets.on('connection', function(socket) { // socket.on('user note', function (note) { // console.log(note); // }); //}); // Configuration app.configure(function(){ app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.cookieParser()); app.use(express.bodyParser()); app.use(express.methodOverride()); app.use(require('stylus').middleware({ src: __dirname + '/public' })); app.use(express.session({ store: mongoStore(conn) , secret: 'applecake' }, function() { app.use(app.router); })); app.use(passport.initialize()); app.use(passport.session()); app.use(express.static(__dirname + '/public')); }); db = new DB.startup(conn); app.configure('development', function(){ app.use(express.errorHandler({ dumpExceptions: true, showStack: true })); }); app.configure('production', function(){ app.use(express.errorHandler()); }); // Routes require('./routes')(app); app.listen(3000); console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env); 

这是我通过node app运行应用程序后收到的错误

 C:\CrowdNotes>node app Warning: express.createServer() is deprecated, express applications no longer inherit from http.Server, please use: var express = require("express"); var app = express(); C:\CrowdNotes\app.js:63 console.log("Express server listening on port %d in %s mode", app.address().po ^ TypeError: Object function app(req, res){ app.handle(req, res); } has no method 'address' at Object.<anonymous> (C:\CrowdNotes\app.js:63:67) at Module._compile (module.js:449:26) at Object.Module._extensions..js (module.js:467:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Module.runMain (module.js:492:10) at process.startup.processNextTick.process._tickCallback (node.js:244:9) C:\CrowdNotes> 

固定。

我现在正在注册,并使用我的新“用户”数据login,并收到此错误:

 ReferenceError: C:\CrowdNotes\views\account.jade:6 4| div#header 5| h2 CrowdNotes > 6| p Hi, #{currentUser.name.first}! 7| 8| - if (myEvent) 9| p.center My Event: #{myEvent.name} currentUser is not defined at eval (eval at <anonymous> (C:\CrowdNotes\node_modules\jade\lib\jade.js:176:8)) at exports.compile (C:\CrowdNotes\node_modules\jade\lib\jade.js:181:12) at Object.exports.render (C:\CrowdNotes\node_modules\jade\lib\jade.js:216:14) at View.exports.renderFile [as engine] (C:\CrowdNotes\node_modules\jade\lib\jade.js:243:13) at View.render (C:\CrowdNotes\node_modules\express\lib\view.js:75:8) at Function.app.render (C:\CrowdNotes\node_modules\express\lib\application.js:500:10) at ServerResponse.res.render (C:\CrowdNotes\node_modules\express\lib\response.js:716:7) at module.exports.getAccount (C:\CrowdNotes\routes\index.js:47:11) at Promise.module.exports.getMyEvent (C:\CrowdNotes\accessDB.js:54:7) at Promise.addBack (C:\CrowdNotes\node_modules\mongoose\lib\promise.js:128:8) 

我想知道这是否也是某种forms的语法错误? 不知道这里出了什么问题,因为我认为代码都排在了tbh。

我使用这里的代码: https : //github.com/rockbot/crowdnotes

解决方法是在错误中给出的。

警告:express.createServer()已被弃用,express应用程序不再inheritance自http.Server请使用:

  var express = require("express"); var app = express(); 

所以你将不得不这样做。

 var express = require('express') , http = require('http'); var app = express(); var server = http.createServer(app); 

它可以完成这个简单的程序:

 var express = require('express'); var app = express(); app.get('/', function(req,res) { res.send("express"); } ); app.listen(3333); 

它工作正常。

另一个可能的解决scheme是安装Express 2.5.8作为依赖项。

添加到package.json中:

  { "name": "authentication" , "version": "0.0.1" , "private": true , "dependencies": { "express": "2.5.8" , "jade": ">= 0.26.1" } } 

然后运行

 npm install 

我已经在使用下面的代码片段,它工作正常:

 var express =require("express"); var http = require("http"); var app = express(); //app routers here ... var httpServer = http.Server(app); httpServer.listen({PORT}, function(err){ }); 
 var express = require('express'); var app = express(); app.listen(port number); 

随着更新版本的express(express 4.x),你不需要创build服务器。 app.listen内部做到这一点。 请参阅https://expressjs.com/en/4x/api.html#app.listen