Nodejs Express Generator - node.js

Hi I got some erros when I type npm start.
I create express-generator app with
'express mynewapp' -> cd mynewapp -> npm install -> npm start.
It should work but it gives this errors and I can't find solution. Here is my CMD
And this is my APP.js, I never change anything, It generated express-generator
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', indexRouter);
app.use('/users', usersRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
Also the npm doctor
Npm doctor

Related

Node JS and Express - Possible EventEmitter memory leak detected

I have this error on my nodejs app (I'm using Nodejs + Express EJS)
Possible EventEmitter memory leak detected. 11 pipe listeners added to [Request]. Use emitter.setMaxListeners() to increase limit
I do this code process.setMaxListeners(0); btw I use Digitalocean
but nothing is happening I still have the problem
this is my app.js code
let createError = require('http-errors');
const express = require('express');
const app = express();
let path = require('path');
let cookieParser = require('cookie-parser');
let logger = require('morgan');
let bodyParser = require('body-parser');
process.setMaxListeners(0);
app.listen(3000);
app.use(bodyParser.json({limit: '11mb'}));
let indexRouter = require('./routes/rooms/index');
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/home', indexRouter);
app.use(function(req, res, next) {
next(createError(404));
});
app.use(function(err, req, res, next) {
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
res.status(err.status || 500);
res.render('error');
});
Thank you in advance

Express application won't load. It constantly attempts to load in the browser, and doesn't show any errors in the console or browser

This is an Express backend with a React front end. React runs perfectly fine on port 3000, and express was running fine on port 3002 until recently. I don't get any error messages and cannot figure out what is going on. Here is my App.js file for the backend:
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var cors = require('cors');
var bodyParser = require('body-parser')
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var testRouter = require('./routes/test');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.use(cors());
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(bodyParser.urlencoded({extended : true}))
app.use(bodyParser.json)
app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use("/test", testRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
`

the command node bin\www results in module not found error

I am currently learning how to use nodejs alongside with express as well as ejs. I have a sample app.js file below
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', indexRouter);
app.use('/users', usersRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
As well as corresponding index.js files in a routes folder in the same directory as app.js. Below is the index.js file:
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
});
module.exports = router;
I have already installed the missing packages by running npm install within the App folder that holds app.js, routes, views as well as other various folders. What am i doing wrong?

nodejs express server not running/starting

I have created new express app using express generator.
After navigating to my app, when I try to run node app.js nothing happens.
I also tried to run it using nodemon package but server is still not running.
However when i set SET DEBUG=NodeVue:* & npm start and then use npm start command everything works fine..
Can anybody please explain me with why node app.js command is not working.
Thanks in advance.
app.js code -->
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 index = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', index);
app.use('/users', users);
// 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
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
console window-- >
Maybe you should try node bin/www,look into your package.json and check out the start script, it's the command you should use.

Post routes error in Express

I'm facing a problem every time I try to create a post route in Express.
I get a Not found error.
Everything was working well before and I don't know what is really happening
This is my code:
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 index = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', index);
app.use('/users', users);
// 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
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
And this is the users route:
users.js
var express = require('express');
var router = express.Router();
/* GET users listing. */
router.post('/', function(req, res, next) {
res.send('respond with a resource');
});
module.exports = router;
Any help ?
Your code looks fine. Try to:
restart the app and make the post one again, check the logs. You may find an answer in the app logs . If still not working.
Verify the index path ./routes/index
If you still get not results . Reinstall the app again. Looks you are just starting so.

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