Basic REST Service in NodeJS

Project Structure

There are three major files

App.js

This is a very basic file, you can change the Port number if you want here.

Routes

The routes/helloworld_routes.js file has the mapping between the path and the request handler.

Controller

The controllers/helloworld_controller.js file has the methods for handling the request.

app.js

'use strict';
var express = require('express');
var bodyParser = require('body-parser');
var http = require('http');
var httpServer;

var app = express();
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));

var routes = [
"helloworld_routes"
]

function setupRoutes(){
  for(var route of routes){
    app.use('/' , require("./routes/"+ route));
  }
}

function startServer() {
  try{
    var portnumber =8888;
    setupRoutes();
    httpServer = http.createServer(app).listen(portnumber, '0.0.0.0');
    console.log("Server started at port "+portnumber);
    console.log("URL http://localhost:"+portnumber);
  }
  catch(err){
    console.log("app.js startServer :: err :: ", err);
  }
}

startServer();

helloworld_routes.js

'use strict';

var express = require('express');
var helloWorldRouter = require('../controllers/helloworld_controller.js');
var router = module.exports = express.Router();
router.post("/hello", helloWorldRouter.helloworld);
router.get("/hello", helloWorldRouter.helloworld);

helloworld_controller.js

'use strict';

module.exports = {
  helloworld : helloworld
}

function helloworld(request, response) {
  response.status(200).send({ data : "Hello World"});
}