I am new to node js . I am running my project from Visual studio 2017. I am trying to keep the Node.js Command prompt windows open after executing the code. I ticked the option for wait for the process for exit normally from tools menu at visual studio but still same result.
Here is my app.js code ....
'use strict';
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var expressValidator = require('express-validator');
var flash = require('express-flash');
var session = require('express-session');
var bodyParser = require('body-parser');
var mysql = require('mysql');
var connection = require('./lib/db');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var customersRouter = require('./routes/customers');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
// 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(express.static(path.join(__dirname, 'public')));
app.use(session({
secret: '123456cat',
resave: false,
saveUninitialized: true,
cookie: { maxAge: 60000 }
}))
app.use(flash());
app.use(expressValidator());
app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/customers', customersRouter);
// 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','\n\n');
});
module.exports = app;
app.set('port', process.env.PORT || 3000);
var server = app.listen(app.get('port'), function () {
debug('Express server listening on port ' + server.address().port);
});
Here is the screen shot ...
I solved this problem by opening command prompt from visual .
1. Open you project .
2.Then right click on the project you will see the option to open cmd .
3. Finally write the following code to see the errors or keep open cmd while you are running applications.
node name of your js.
Related
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
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;
`
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?
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.
I am new to NodeJS, I have downloaded my project from github and installed all the required NodeJS modules. and know it just showing
Webstorm console:
run app.js
Process finished with exit code 0
and stops the application.
Why it is getting stop. I cannot access localhost:3000. Your guidance will be highly appreciated.
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 session = require('express-session');
var index = require('./routes/index');
var login = require('./routes/login');
var logout = require('./routes/logout');
var contact = require('./routes/contact');
var signup = require('./routes/signup');
var app = express();
var connection = require('express-myconnection');
var mysql = require('mysql');
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(session({
secret: '123secret',
proxy: true,
resave: true,
saveUninitialized: true
}));
app.use(
connection(mysql, {
host: 'localhost',
user: 'proj',
password: '123456',
port: 3306, //port mysql
database: 'projectnode'
}, 'request')
);
// uncomment after placing your favicon in /assets
//app.use(favicon(path.join(__dirname, 'assets', '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, 'assets')));
app.use('/', index);
app.use('/login', login);
app.post('/login', login);
app.post('/signup', signup);
app.get('/contact', contact);
app.post('/contact', contact);
app.get('/logout', logout);
// 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;
I once had this problem before because the Webstorm console was executing app.js instead of www.
Just go to Run/Debug Configurations panel (You can access this from the Navigation Bar):
Navigate to your app.js Configuration tab and then change the path for the JavaScript file to your www file.