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🛠️ ProductUserRESTApi

A RESTful Spring Boot API to manage Users and their associated Products, with full CRUD functionality and secure role-based access. Built with Spring Boot 3.x, Spring Security, and Spring Data JPA, this application demonstrates clean architecture, layered separation of concerns, and practical in-memory authentication for role management.

📌 Features

  • 🔹 CRUD operations on User and Product entities
  • 🔹 One-to-Many relationship: a User can own multiple Products
  • 🔹 In-memory authentication using Spring Security
  • 🔹 Role-based access to secure endpoints
  • 🔹 Differentiated access for ADMIN and USER roles

🔐 In-Memory User Roles

Username Password Role Can Access
admin admin123 ADMIN /users/**, /products/**
user user123 USER /products/** only

🔗 API Access Permissions

Endpoint Method Role(s) Allowed Description
/products GET ADMIN, USER List all products
/products POST ADMIN, USER Create a product
/products/{id} PUT ADMIN Update product by ID
/products/{id} DELETE ADMIN Delete product by ID
/users GET ADMIN List all users
/users POST ADMIN Create a new user

🧰 Technologies Used

  • Java 17
  • Spring Boot 3
  • Spring Data JPA
  • Spring Security
  • MySQL / H2 (configurable)
  • Maven

📄 License

This project is licensed under the MIT License.