🛒 Ecommerce API - Spring Boot Backend

A production-style Ecommerce Backend REST API** built using Java, Spring Boot, Spring Security, JWT, and MySQL**.

This project demonstrates a phase-based development approach, where each feature is implemented step-by-step like a real-world backend system.

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🚀 Features

• User Registration & Login
• JWT Authentication
• Role-Based Authorization
• Product Management APIs
• Cart System
• Order Management
• Payment Flow
• Global Exception Handling
• Logging with SLF4J
• Swagger API Documentation
• Clean Layered Architecture

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🏗️ Project Architecture

Controller → Service → Repository → Database

Controller Layer
Handles HTTP requests and API endpoints.

Service Layer
Contains business logic.

Repository Layer
Handles database operations using Spring Data JPA.

DTO Layer
Transfers request and response objects.

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🧑‍💻 Tech Stack

Technology	Usage
Java	Backend language
Spring Boot	Application framework
Spring Security	Authentication & Authorization
JWT	Token based authentication
MySQL	Database
Spring Data JPA	ORM
Maven	Dependency management
Swagger	API documentation
Lombok	Boilerplate code reduction
SLF4J	Logging

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📂 Project Structure

src └── main └── java └── com.amar.fullstack.ecommerce_api ├── controller ├── services ├── repository ├── security ├── config ├── dto ├── exception └── model

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🔐 Authentication Flow

User Login
↓
Spring Security Authentication
↓
JWT Token Generated
↓
Token used for protected APIs

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📡 API Endpoints

Authentication

POST /api/auth/register
POST /api/auth/login

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Products

POST /api/products
GET /api/products
PUT /api/products/{id}
DELETE /api/products/{id}

Example Delete API Response

Product successfully deleted with id: 1

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🧾 Example Request JSON

Create Product

{
  "name": "Laptop",
  "description": "Gaming Laptop",
  "price": 75000,
  "stock": 10
}
🧱 Development Phases

Phase 1 → Core User CRUD
Phase 2 → Validation
Phase 3 → Security
Phase 4 → Role Based Security
Phase 5 → Product APIs
Phase 6 → Cart System
Phase 7 → Logging & Swagger
Phase 8 → Order Management
Phase 9 → Payment Flow

📌 Future Improvements

Email Notifications

Payment Gateway Integration

Microservices Architecture

Docker Deployment

CI/CD Pipeline

👨‍💻 Author

Amar Deep
Java Backend Developer

LinkedIn
https://www.linkedin.com/in/amar-maurya-backend/

GitHub
https://github.com/amar-deep-2025

⭐ Support
If you like this project, please give it a ⭐ on GitHub.