Verify Return URL

When the customer successfully makes a payment, VNPay will redirect the customer to the return notification URL (vnp_ReturnUrl) that you have provided.

Verify Return URL

import { VerifyReturnUrl } from 'vnpay';

/* ... */

const verify: VerifyReturnUrl = vnpay.verifyReturnUrl(req.query);

Properties of the VerifyReturnUrl

Information after verification and returned by VNPay

info

Similar to the properties of the VerifyIpnCall

Use in Express

With MVC

Steps to verify the return URL in Express with MVC:

1. Create a route to handle the return URL
2. Verify the return URL
3. Handle the information returned from VNPay

controllers/payment.controller.ts

// Route to handle return URL
// Instead of sending text, you can render a template or redirect the customer to the necessary page
app.get('/vnpay-return', (req, res) => {
    let verify: VerifyReturnUrl;
    try {
        // Use try-catch to catch errors if the query is invalid or lacks data
        verify = vnpay.verifyReturnUrl(req.query);
        if (!verify.isVerified) {
            return res.send('Data integrity verification failed');
        }
        if (!verify.isSuccess) {
            return res.send('Payment order failed');
        }
    } catch (error) {
        return res.send('Invalid data');
    }

    // Check order information and handle

    return res.send('Return URL verification successful');
});