PaySnap – Contactless QR Payment Platform

PaySnap is a secure and modular payment platform designed for businesses and individuals to generate Stripe-powered payment links and QR codes for fast, contactless transactions. With a clean REST API and real-time payment tracking, PaySnap enables seamless integration with modern payment workflows.

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Key Features

• QR Code Payments: Instantly generate QR codes for customer payments.
• Stripe Integration: Secure checkout using Stripe’s API.
• JWT Authentication: Token-based authentication with Redis token blacklisting.
• Real-time Webhooks: Receive instant payment status updates via Stripe webhooks.
• PDF Receipts: Automatically generate downloadable receipts.
• Order Management: Full order history with search and filtering capabilities.
• Multi-Currency Support: Accept payments in USD, EUR, GBP, and more.
• RESTful API: Clean and well-documented API endpoints for backend integration.

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Technology Stack

Backend & API:

• Java 17
• Spring Boot 3.2
• Spring Security (JWT + Redis blacklisting)
• Spring Data JPA

Database & Caching:

• PostgreSQL
• Redis

Payment & Utilities:

• Stripe SDK
• ZXing (QR code generation)
• JJWT (JWT implementation)
• Lombok

Development Tools:

• Docker & Docker Compose
• Maven
• Postman

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Getting Started

Prerequisites

• Java 17 or higher
• Maven 3.6+
• Docker & Docker Compose
• Stripe account with API keys

Installation

1. Clone the repository:

git clone https://github.com/yourusername/paysnap.git
cd paysnap