I am building a (RESTful) Node.js API, using this tutorial.
I have nade a server.js
const express = require('express');
const MongoClient = require('mongodb').MongoClient;
const bodyParser = require('body-parser');
const app = express();
const port = 8080;
app.listen(port, () => {
console.log('We are live on ' + port);
});
I can run my server and see the message :
We are live on 8080
my index.js
const noteRoutes = require('./note_routes');
module.exports = function(app, db) {
noteRoutes(app, db);
// Other route groups could go here, in the future
};
and my node_routes.js
//create a node
module.exports = function(app, db) {
app.post('/notes', (req, res) => {
// You'll create your note here.
res.send('Hello')
});
};
index.js and node_routes.js are both inside app\routes\
I have also downloaded the post man app, to make simple requests
and I get the error
Cannot POST /notes
what am I doing wrong??
I can not figure it out!
There is an error in your server.js
You are missing require('./app/routes')(app, {});
Should be:
require('./app/routes')(app, {});
app.listen(port, () => {
console.log('We are live on ' + port);
});
Related
I have a local server that I have created to learn and practice my backend coding. Right now its in the early stages. My code is just a basic express app, i can require the json file in and i can display it but what im not sure how to do is every time the page is refreshed to load a different question?
app.js
const express = require('express')
const questions = require('./question.json')
const app = express()
const PORT = 3000
app.get('/', (req, res)=>{
res.set('Content-Type', 'text/html');
res.status(200).send("<h1>Hello</h1>");
})
app.listen(PORT, (error) =>{
console.log(`Server is Successfully Running, and App is listening on port ${PORT}`)
})
questions.json
{
"questions":[
{
"1":"Question 1?"
},
{
"2":"Question 2?"
},
{
"3":"Question 3?"
},
{
"4":"Question 4?"
}
]
}
That should work, you might want to define the path of the questions array first instead of having it written out long handed.
const express = require('express')
const questions = require('./questions.json')
const app = express()
const PORT = 3000
app.get('/', (req, res)=>{
JSON.parse(JSON.stringify(questions))
var randomObject = questions.questions[Math.floor(Math.random() * questions.questions.length)]
console.log(randomObject)
res.set('Content-Type', 'text/html');
res.status(200).send("<h1>Hello GFG Learner!</h1>");
})
app.listen(PORT, (error) =>{
console.log(`Server is Successfully Running, and App is listening on port ${PORT}`)
})
In this fictive project I am trying to set up the Routing structure. Although I used module.exports in both files, running a test still gives me the following error:
TypeError: Router.use() requires a middleware function but got a Object
My Code:
Minions.js
const minionsRouter = require('express').Router();
module.exports = minionsRouter;
const {
getAllFromDatabase,
addToDatabase,
getFromDatabaseById,
updateInstanceInDatabase,
deleteFromDatabasebyId,
} = require('./db.js');
minionsRouter.get('/', (req, res, next) => {
const minionsArray = getAllFromDatabase('minions');
if (minionsArray) {
res.status(200).send(minionsArray);
} else {
res.status(404).send();
}
});
API.js
const express = require('express');
const apiRouter = express.Router();
const minionsRouter = require('./minions');
const ideasRouter = require('./ideas');
const meetingsRouter = require('./meetings');
apiRouter.use('/minions', minionsRouter);
apiRouter.use('/ideas', ideasRouter);
apiRouter.use('/meetings', meetingsRouter);
module.exports = apiRouter;
Server.js
const express = require('express');
const app = express();
module.exports = app;
/* Do not change the following line! It is required for testing and allowing
* the frontend application to interact as planned with the api server
*/
const PORT = process.env.PORT || 4001;
// Add middleware for handling CORS requests from index.html
const cors = require('cors');
app.use(cors());
// Add middleware for parsing request bodies here:
const bodyParser = require('body-parser');
app.use(bodyParser.json());
// Mount your existing apiRouter below at the '/api' path.
const apiRouter = require('./server/api');
app.use('/api', apiRouter);
// This conditional is here for testing purposes:
if (!module.parent) {
// Add your code to start the server listening at PORT below:
app.listen(PORT, () => {
console.log(`Server is listening on port ${PORT}`)
})
};
Any help is much appreciated!
I'm trying to understand the connection between Node.js and Express.
My Code for creating a Node.js Server:
const https = require('https');
const fs = require('fs');
const options = {
key: fs.readFileSync('./https1/key.pem'),
cert: fs.readFileSync('./https1/cert.pem')
};
const server = https.createServer(options, function(req,res){
res.writeHead(200);
res.end(`Hello world!!!!!!!!!!! \n`);
});
server.listen(3000, function(){
console.log('Server listening on port 3000 \n');
});
I run a curl operation curl -k localhost:3000 and it gives me a "Hello World" Output
My code for creating an Express Server:
// call the packages we need
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
var port = process.env.PORT || 8080;
// ROUTES FOR OUR API
var router = express.Router();
// test route to make sure everything is working (accessed at GET http://localhost:8080/api)
router.get('/', function(req, res) {
res.json({ message: 'hooray! welcome to our api!' });
});
app.listen(port);
console.log('Magic happens on port ' + port);
Is it possible for us to mix both of these?
To be more specific, I would like to create my Server using the Node.js way, but create my routes using the Express way. Can I do it or should I just follow one methodology? What is the connection between Node.js and Express? I understand that Express is just a framework for Node.js but where exactly does the deviation occurs if at all any?
Can I mix and combine the two when required?
Thank you
Yes you can combine nodejs and express, but not encourage you to combine those unless you have specific purpose such as using AWS lambda or making specific OS tasks that has to be made only with pure node.
As you already know, express is just a framework. You can write code more shortly using express.
For example, to make the browser displaying Hello world,
// nodejs version
const http = require('http');
const hostname = '127.0.0.1';
const port = 3000;
const server = http.createServer((req, res) => {
res.statusCode = 200;
res.setHeader('Content-Type', 'text/plain');
res.end('Hello World!\n');
});
server.listen(port, hostname, () => {
console.log(`Server running at http://${hostname}:${port}/`);
});
// express version
const express = require('express');
const app = express();
const port = 3000;
app.listen(port, (req, res) => {
res.send('Hello World!\n');
})
More easier, and intuitive.
You surely can that's the way to create a Secure HTTPS server with express and followed in most projects
const https = require('https');
const express = require('express');
const app = express();
const options = {
key: fs.readFileSync('./https1/key.pem'),
cert: fs.readFileSync('./https1/cert.pem')
};
const server = https.createServer(options, app);
app.get('/', (req, res) => {
res.send('hello world')
}
server.listen(config.port, () => {
console.log(`Express server listening on port ${port} in ${app.get('env')} mode`);
});
Now add your routes and all.
Hi i have setup three project api(nodejs) , admin(angular 4) and website(angular 4) , after build i got two UI folder admin-dist and web-dist , I want to access these app based on URL '/admin' will access admin-dist and '/' will access web-dist , I have placed these two folder on of api folder
For accessing these app i have written node code like this ,But i am not able to access ,
Please help me, Thanks in advance ..
app.js
var express = require('express');
router = express.Router();
var port = process.env.PORT || 3000;
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var cookieParser = require('cookie-parser');
var fs = require('fs')
var morgan = require('morgan')
var path = require('path')
var cors = require('cors');
var User = require('./models/user.model');
var dbConfig = require('./config/db');
var app = express();
app.use(cors());
app.use(cookieParser());
// create a write stream (in append mode)
var accessLogStream = fs.createWriteStream(path.join(__dirname, 'access.log'), {flags: 'a'});
// setup the logger
app.use(morgan('combined', {stream: accessLogStream}));
mongoose.Promise = global.Promise;
mongoose.connect(dbConfig.db, function (err) {
if (err) {
console.log('faild to connect with mongo DB', err);
}
else {
console.log('Connection open with mongo db');
}
})
app.use(bodyParser.urlencoded({extended: true}));
app.use(bodyParser.json());
app.use('/api', router);
var userRoute = require('./routes/user.route')(router);
// var profileRoute = require('./routes/profile.route')(app);
// var productRoute=require('./routes/products.route')(app);
app.use(express.static(__dirname + '/admin-dist'));
app.get('/admin', function (req, res) {
console.log('admin route');
return res.sendFile(path.resolve('./admin-dist/index.html'));
});
app.get('/admin/*', function (req, res) {
res.sendFile(path.resolve('./admin-dist/index.html'));
});
app.use(express.static(__dirname + '/front-dist'));
app.get('/', function (req, res) {
console.log('web route');
return res.sendFile(path.resolve('./front-dist/index.html'));
});
app.use('/*',function(req, res) {
return res.sendFile(path.resolve('./front-dist/index.html'));
});
app.listen(port, function (err) {
if (err) {
console.log(err);
}
else {
console.log('Server api runing on port ', port);
}
})
I'll try to make this as to the point as possible. I am trying to make a post request to my express backend. All of the post requests here work, except for "/addpayment". Here is my file called 'router.js'
module.exports = function(app) {
app.post('/signin', requireSignin, Authentication.signin)
app.post('/signup', Authentication.signup)
app.post('/addpayment', function(req, res, next) {
res.send({ message: 'why................' })
})
}
Here is my main 'server.js' file
const express = require('express')
const http = require('http')
const bodyParser = require('body-parser')
const morgan = require('morgan')
const app = express()
const router = require('./router')
const mongoose = require('mongoose')
const cors = require('cors')
// DB Connect
mongoose.connect('mongodb://localhost/demo-app')
// App
app.use(morgan('combined'))
app.use(cors())
app.use(bodyParser.json({ type: '*/*' }))
router(app)
// Server
const port = process.env.PORT || 3090
const server = http.createServer(app)
server.listen(port)
console.log('Server has been started, and is listening on port: ' + port)
I get a 404 in postman, and inside my app browser console. I am using passport in my other routes. I already tried running it through passport when I have a JWT token, and same thing(a 404).
I have already looked at all Stack Overflow/Github posts on the first few pages of google results, with no solution for my use case.
I have made a simplified version of your server and everything works as expected. Only difference that I have made is that I am not creating http server like you, but just calling app.listen
here is working example
router.js
module.exports = function(app) {
app.post('/addpayment', function(req, res, next) {
res.send({message: 'why................'})
})
};
server.js
var express = require('express');
var router = require('./router');
var app = express();
router(app);
//init server
app.listen(3000, function() {
console.log("Server running on port 3000");
});