新版本的express中对中间件进行了一些更改,并且围绕该问题的其他一些帖子,我对代码进行了一些更改,但我束手无策。
我们已经事先进行了工作,但是我不记得发生了什么变化。
throw new TypeError('Router.use() requires middleware function but got a ^ TypeError: Router.use() requires middleware function but got a Object
node ./bin/www js-bson: Failed to load c++ bson extension, using pure JS version js-bson: Failed to load c++ bson extension, using pure JS version
/Users/datis/Documents/bb-dashboard/node_modules/express/lib/router/index.js:438 throw new TypeError('Router.use() requires middleware function but got a ^ TypeError: Router.use() requires middleware function but got a Object at /Users/datis/Documents/bb-dashboard/node_modules/express/lib/router/index.js:438:13 at Array.forEach (native) at Function.use (/Users/datis/Documents/bb-dashboard/node_modules/express/lib/router/index.js:436:13) at /Users/datis/Documents/bb-dashboard/node_modules/express/lib/application.js:188:21 at Array.forEach (native) at Function.use (/Users/datis/Documents/bb-dashboard/node_modules/express/lib/application.js:185:7) at Object.<anonymous> (/Users/datis/Documents/bb-dashboard/app.js:46:5) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32)
app.js
var express = require('express'); var path = require('path'); var favicon = require('serve-favicon'); var logger = require('morgan'); var cookieParser = require('cookie-parser'); var bodyParser = require('body-parser'); var mongoose = require('mongoose'); var session = require('express-session'); var MongoClient = require('mongodb').MongoClient; var routes = require('./routes/index'); var users = require('./routes/users'); var Users = require('./models/user'); var Items = require('./models/item'); var Store = require('./models/store'); var StoreItem = require('./models/storeitem'); var app = express(); //set mongo db connection var db = mongoose.connection; MongoClient.connect("mongodb://localhost:27017/test", function(err, db) { if(!err) { console.log("We are connected"); } }); // var MONGOHQ_URL="mongodb://localhost:27017/test" // view engine setup app.set('views', path.join(__dirname, 'views')); app.set('view engine', 'ejs'); // uncomment after placing your favicon in /public //app.use(favicon(__dirname + '/public/favicon.ico')); app.use(logger('dev')); app.use(bodyParser.json()); app.use(bodyParser.urlencoded({ extended: false })); app.use(cookieParser()); app.use(session({ secret: 'something', resave: true, saveUninitialized: true })); app.use('/', routes); app.use('/users', users); app.use(express.static(path.join(__dirname, 'public'))); // catch 404 and forward to error handler // app.use(function(req, res, next) { // var err = new Error('Not Found'); // err.status = 404; // next(err); // }); // Make our db accessible to our router app.use(function(req, res, next){ req.db = db; next(); }); // error handlers // development error handler // will print stacktrace if (app.get('env') === 'development') { app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: err }); }); } // production error handler // no stacktraces leaked to user app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: {} }); }); module.exports = app;
似乎由于版本控制原因,此问题的答案已更改。感谢Nik
如果您使用的是高于2.x的express,则必须像以下代码一样声明app.router。请尝试替换您的代码
app.use('/', routes);
与
app.use(app.router); routes.initialize(app);
谢谢
app.router在Express 3.0+中已贬值。如果您使用的是Express 3.0+,请参阅下面的Anirudh答案。