🛡️ Spring Security Login & Registration API

Overview

A complete user authentication and registration system with RESTful endpoints and MySQL integration.

Features

✅ User registration with encrypted passwords (BCrypt)
✅ Secure login with JWT authentication
✅ Role-based access control
✅ RESTful API endpoints for authentication
✅ Spring Boot, Spring Security, and JPA integration

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🏗️ Project Structure (Key Components)

src/
├── main/
│   ├── java/com/example/security/
│   │   ├── config/
│   │   │   ├── AppSecurityConfig.java
│   │   ├── controllers/
│   │   │   ├── AuthController.java
│   │   │   ├── UserController.java
│   │   ├── entities/
│   │   │   ├── User.java
│   │   │   ├── Role.java
│   │   ├── repositories/
│   │   │   ├── UserRepository.java
│   │   │   ├── RoleRepository.java
│   │   ├── services/
│   │   │   ├── AuthService.java
│   │   │   ├── UserService.java
│   │   ├── dto/
│   │   │   ├── UserDTO.java
│   │   │   ├── LoginDTO.java

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🚀 Core Endpoints

Endpoint	Method	Request	Response	Description
/api/auth/register	POST	UserDTO	Success Message	Register a new user
/api/auth/login	POST	LoginDTO	JWT Token	Authenticate a user
/api/users/me	GET	JWT Token	User Details	Get logged-in user details
/api/admin/users	GET	JWT Token (Admin)	List of Users	Get all registered users

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🔧 Service Layer

Key services include:

• User authentication and authorization
• Password encryption using BCrypt
• Token-based authentication using JWT

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⚙️ Tech Stack

• Backend: Spring Boot 3.4.4 + Spring Security + JPA
• Database: MySQL
• Authentication: JWT (JSON Web Token)

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🛠️ Setup

1. Configure MySQL in application.properties:

spring.datasource.url=jdbc:mysql://localhost:3306/security_db
spring.datasource.username=root
spring.datasource.password=yourpassword
spring.jpa.hibernate.ddl-auto=update
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

2. Start the application:

mvn spring-boot:run

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📄 License

MIT © 2024