express-fileupload

import express from 'express'; import fileUpload from 'express-fileupload'; import path from 'path'; import { promises as fs } from 'fs'; const app = express(); const PORT = process.env.PORT || 3000; const UPLOAD_DIR = path.join(process.cwd(), 'uploads'); // Create upload directory if it doesn't exist fs.mkdir(UPLOAD_DIR, { recursive: true }).catch(console.error); // Middleware: Enable file uploads with temporary files app.use(fileUpload({ useTempFiles: true, tempFileDir: '/tmp/', // Ensure this directory exists and is writable limits: { fileSize: 50 * 1024 * 1024 } // 50MB limit })); app.post('/upload', async (req, res) => { if (!req.files || Object.keys(req.files).length === 0) { return res.status(400).send('No files were uploaded.'); } // 'foo' is the name of the input field in the form const uploadedFile = req.files.foo; // Check if uploadedFile is an array (multiple files with same name attribute) // For simplicity, assume single file upload with 'foo' name. if (Array.isArray(uploadedFile)) { return res.status(400).send('Multiple files for a single input field not supported in this example.'); } const uploadPath = path.join(UPLOAD_DIR, uploadedFile.name); try { await uploadedFile.mv(uploadPath); res.send(`File uploaded to ${uploadPath}`); } catch (err) { console.error(err); res.status(500).send(err.message); } }); app.get('/', (req, res) => { res.send(` <h1>Upload a File</h1> <form action="/upload" method="post" enctype="multipart/form-data"> <input type="file" name="foo" /> <input type="submit" value="Upload" /> </form> `); }); app.listen(PORT, () => { console.log(`Server listening on port ${PORT}`); console.log(`Uploads will be saved to ${UPLOAD_DIR}`); });