我正在学习node和expressjs,并且遇到了我一直在尝试调试的路由问题。我相信我正在使用正确的属性和方法调用,但由于某种原因,我的问题似乎来自当我从 blogModel 模块创建新对象时或当我调用 app.use("/"、routes);
在我的 server.js 文件中。
错误消息:
/Users/user/Desktop/Projects/node/blog/node_modules/express/lib/router/index.js:423
throw new TypeError(msg);
^
TypeError: Router.use() requires callback function but got a [object Undefined]
at /Users/user/Desktop/Projects/node/blog/node_modules/express/lib/router/index.js:423:13
at Array.forEach (native)
at Function.use (/Users/user/Desktop/Projects/node/blog/node_modules/express/lib/router/index.js:419:13)
at /Users/user/Desktop/Projects/node/blog/node_modules/express/lib/application.js:178:21
at Array.forEach (native)
at Function.use (/Users/user/Desktop/Projects/node/blog/node_modules/express/lib/application.js:175:7)
at Object.<anonymous> (/Users/user/Desktop/Projects/node/blog/server.js:28:5)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
26 Aug 08:18:05 - [nodemon] app crashed - waiting for file changes before starting...
服务器.js:
//Load express
var express = require('express');
var app = express();
var router = express.Router(); // get an instance of the router
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var routes = require('./app/routes.js')(router);
// configure app to use bodyParser()
// get data from a POST method
app.use(bodyParser.urlencoded({ extended: true}));
app.use(bodyParser.json());
var port = process.env.PORT || 8080; // set the port
var blogDB = require('./config/blogDB.js');
var Blogpost = require('./app/models/blogModel');
app.set('view engine', 'ejs'); // set ejs as the view engine
app.use(express.static(__dirname + '/public')); // set the public directory
// use routes.js
app.use('/', routes);
app.listen(port);
console.log('magic is happening on port' + port);
routes.js:
module.exports = function(app, router) {
var express = require('express');
var router = express.Router();
var blogDB = require('../config/blogDB.js');
//index
router.route('/', function(req, res) {
var drinks = [
{ name: 'Bloody Mary', drunkness: 3 },
{ name: 'Martini', drunkness: 5 },
{ name: 'Scotch', drunkness: 10 }
];
var tagline = "Lets do this.";
res.render('pages/index', {
drinks: drinks,
tagline: tagline
});
});
//blog
router.route('/blog')
.post(function(req, res) {
var blogpost = new Blogpost(); // create a new instance of a Blogpost model
blogpost.title = req.body.name; // set the blog title
blogpost.body = req.body.body; // set the blog content
blogpost.save(function(err) {
if (err)
res.send(err);
res.json({ message: 'Blog created.' });
});
});
//about
router.get('/about', function(req, res) {
res.render('pages/about');
});
}
最佳答案
您忘记将第一个参数添加到路由函数中:
var routes = require('./app/routes.js')(router);
需要
var routes = require('./app/routes.js')(app, router);
再看一下函数的原型(prototype):
module.exports = function(app, router)...
关于javascript - Expressjs4路由错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25505789/