我有以下代码。当我去http://localhost:4000/user时,我试图让它显示我的数据库中的用户,但我得到的只是404.我会感激一些帮助,因为我显然不理解某些东西。
app.js
var express = require('express');
var path = require('path');
var logger = require('morgan');
var index = require('./routes/index');
var user = require('./routes/users');
var mongoose = require('mongoose');
var app = express();
//This is all setup code.
// view engine setup
app.set('view engine','ejs')
app.set('views', path.join(__dirname, 'views'));
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', index);
app.use('/user',user);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
// render the error page
res.status(err.status || 500);
res.render('error');
});
//Mongo code
mongoose.Promise = global.Promise;
mongoose.connect('mongodb://localhost/db1')
.then(() => console.log('Connected to db succesfully'))
.catch((err) => console.error(err));
module.exports = app;
app.listen(4000, function () {
console.log('listening on port 4000!')
})
路由/ user.js的
var express = require('express');
var router = express.Router();
var userModel = require('../models/users.js');
/* GET home page. */
router.get('/user', function(req, res, next) {
console.log("get request made");
});
router.route('/user')
.get(function(req, res) {
User.find(function(err, bears) {
if (err)
res.send(err);
res.json(bears);
});
});
.post(function(req, res) {
var user = new User(); // create a new instance of the Bear model
user.firstNamename = req.body.firstName; // set the bears name (comes from the request)
user.lastName=req.body.lastName;
user.email=req.body.email;
user.save(function(err) {
if (err)
res.send(err);
console.log("User created");
});
})
module.exports = router;
模型/ users.js
var mongoose = require('mongoose');
// Create a user schema
var userSchema = new mongoose.Schema({
firstName: String,
lastName: String,
email: String,
});
module.exports = mongoose.model('User', userSchema);
答案 0 :(得分:1)
这里有三个问题:
首先您需要./routes/users
,但路线文件为user.js
,因此应该是:
var user = require('./routes/user');
第二,当您在应用上安装了用户中间件时,您选择将/user
添加到所有用户路由(app.use('/user', user);
);所以当你说:
router.route('/user').get(function ...
它响应/user/user
路线。所以正确的实施是:
router.route('/').get(function ...
这会回复/user
第三,在删除post
请求之前使用分号。
注意 router.route('/').get(function...
与router.get('/', function ...
完全相同。我们使用第一种模式将不同的http动词链接到一条路线。但是分号破坏了链接:
router
.route('/')
.get(function ...)
.post(function ...)
.delete(function ...);