const express = require('express'); const path = require('path'); const app = express(); // Endpoint to handle the download app.get('/download/china5', (req, res) => const filePath = path.join(__dirname, 'files', 'china5.zip'); const fileName = 'china5.zip'; res.download(filePath, fileName, (err) => if (err) console.error("File download failed:", err); res.status(404).send("File not found."); ); ); app.listen(3000, () => console.log('Server running on port 3000')); Use code with caution. Copied to clipboard 2. Frontend Implementation (HTML/JavaScript)
A clean UI button with a loading state to improve user experience. Download china5 zip
This endpoint handles the file request, sets the appropriate headers, and streams the file to the client. javascript This endpoint handles the file request, sets the
: If this "china5" file contains postal data, note that China uses a 6-digit numerical system . Ensure your zip contents align with these official postal requirements . China Postal Code Requirements | UPS Supply Chain Solutions China Postal Code Requirements | UPS Supply Chain
To provide a complete "Download china5.zip" feature, you need a backend endpoint to serve the file and a frontend component to trigger the download.
: For production, consider using cloud storage like Amazon S3 or Google Cloud Storage to host large zip files.
This implementation assumes "china5.zip" is a dataset or resource file stored on your server. 1. Backend Implementation (Node.js/Express)