Category: NodeJS

Persiapan

1. Install NodeJs
2. Install MongoDB Community
3. Buat Database MongoDB bernama mongoose_basics

Buat Project

mkdir -p jwt-node-auth/{controllers/users.js,models/users.js,routes/index.js,routes/users.js}
cd jwt-node-auth
touch utils.js && touch config.js && touch index.js

Struktur direktori:

root
├── .env
├── config.js
├── controllers
│   └── users.js
├── index.js
├── models
│   └── users.js
├── routes
│   ├── index.js
│   └── users.js
├── utils.js

Installasi Dependensi

npm init --yes
npm install express body-parser bcrypt dotenv jsonwebtoken mongoose  --save
npm install morgan nodemon cross-env  --save-dev

Fungsi Dependensi

1. body-parser: This will add all the information we pass to the API to the request.body object.
2. bcrypt: We’ll use this to hash our passwords before we save them our database.
3. dotenv: We’ll use this to load all the environment variables we keep secret in our .env file.
4. jsonwebtoken: This will be used to sign and verify JSON web tokens.
5. mongoose: We’ll use this to interface with our mongo database.

Development Dependensi

1. morgan: This will log all the requests we make to the console whilst in our development environment.
2. nodemon: We’ll use this to restart our server automatically whenever we make changes to our files.
3. cross-env: This will make all our bash commands compatible with machines running windows.

Membuat Enviroment Variabel(.env)

.env

JWT_SECRET=addjsonwebtokensecretherelikeQuiscustodietipsoscustodes
MONGO_LOCAL_CONN_URL=mongodb://127.0.0.1:27017/node-jwt
MONGO_DB_NAME=auth-with-jwts

config.js

module.exports = {
  development: {
    port: process.env.PORT || 3000
  }
}

index.js

require('dotenv').config(); // Sets up dotenv as soon as our application starts

const express = require('express'); 
const logger = require('morgan');
const bodyParser = require('body-parser');

const app = express();
const router = express.Router();

const environment = process.env.NODE_ENV; // development
const stage = require('./config')[environment];

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

if (environment !== 'production') {
  app.use(logger('dev'));
}

app.use('/api/v1', (req, res, next) => {
  res.send('Hello');
  next();
});

app.listen(`${stage.port}`, () => {
  console.log(`Server now listening at localhost:${stage.port}`);
});

module.exports = app;

Referensi:

1. https://scotch.io/tutorials/authenticate-a-node-es6-api-with-json-web-tokens
2. https://grokonez.com/node-js/jwt/nodejs-jwt-authentication-nodejs-express-restapis-json-web-token-bcryptjs-sequelize-mysql

Persiapan

1. Installasi NodeJS

Implementasi

Buat project

mkdir learning-hello-world
cd learning-hello-world

Membuat Program Berbasis Teks dengan Nodejs

buat script hello-world.js

console.log("Hello World!");

Simpan lalu jalankan :

node hello-world.js

Membuat Webserver dengan Nodejs

buat script server.js

var http = require('http');

var server = http.createServer(function (req, res) {
    res.end("Hi, selamat datang di nodejs");
});

server.listen(8000);

console.log("server running on http://localhost:8000");

lalu jalankan

node server.js

buka web browser buka http://localhost:8000