Node.js – Express

				
					const express = require('express');
const app = express();

// Middleware to parse JSON requests
app.use(express.json());

// Temporary in-memory array to store items
let items = [];

// POST endpoint to add a single item to the in-memory array
app.post('/items', (req, res) => {
  const newItem = req.body; // Expecting a single object
  if (newItem && newItem.name && newItem.quantity && newItem.price) {
    items.push(newItem); // Add the single item to the array
    res.status(201).json({ message: 'Item added successfully', item: newItem });
  } else {
    res.status(400).json({ message: 'Invalid item format' });
  }
});

// GET endpoint to retrieve all items from the in-memory array
app.get('/items', (req, res) => {
  res.status(200).json(items);
});

// Start the server
const PORT = 3000;
app.listen(PORT, () => {
  console.log(`Server is running on http://localhost:${PORT}`);
});

				
			

				
					const express = require('express');
const app = express();
const PORT = 80;

// Middleware do parsowania JSON i danych URL-encoded
app.use(express.json());
app.use(express.urlencoded({ extended: false }));

// Prosty endpoint powitalny
app.get('/', (req, res) => {
    res.send('Hello World');
});

// Endpointy do wysyłania plików HTML
app.get('/GET', (req, res) => res.sendFile(__dirname + "/GET.html"));
app.get('/POST', (req, res) => res.sendFile(__dirname + "/POST.html"));

// Obsługa zapytania GET z parametrami w URL
app.get('/process_get', (req, res) => {
    const response = {
        first_name: req.query.first_name,
        last_name: req.query.last_name
    };
    console.log("GET: "+ response);
    console.log(response);
    res.json(response);
});

// Obsługa zapytania POST z danymi w treści zapytania
app.post('/process_post', (req, res) => {
    const response = {
        first_name: req.body.first_name,
        last_name: req.body.last_name
    };
    console.log("POST: "+response);
    console.log(response);
    res.json(response);
});

// Obsługa zapytania PUT do aktualizacji użytkownika
app.put('/user/:id', (req, res) => {
    const response = {
        id: req.params.id,
        first_name: req.body.first_name,
        last_name: req.body.last_name
    };
    console.log("Zaktualizowano użytkownika:", response);
    res.json(response);
});

// Uruchomienie serwera
app.listen(PORT, () => {
    console.log(`Express App running at http://127.0.0.1:${PORT}/`);
});