Spring Security with JWT

A practical implementation of About Springboot security and Email Verification with token generation.

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🚀 Prerequisites

• Java: 21
• IDE: VS Code / IntelliJ / Spring STS
• Database: PostgreSQL

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⚙️ Configuration & Execution

🔧 Technologies Used

• Java 21
• Spring Boot 3.4.5
• Postgres

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📥 Setup Instructions

1. Clone the Repository
   Open your terminal and run:

   git clone https://github.com/NithinU2802/Spring-Security.git
   cd spring_security

2. Update Maven Dependencies Perform a Maven update to download all project dependencies. You can do this from your IDE or by running:

    mvn clean install
   

3. Set Up the Database Open PgAdmin or your preferred Postgres client and execute the SQL queries in data.sql.
4. Open Google Account with an host email and generate App Password (Note: App Password page is enable if two-step verification is Turned ON ).
5. Configure Environment Variables Create a .env file in the root directory of the project (/spring_security) and add the following content, updating the values to match your setup:

   SPRING_DATASOURCE_URL=jdbc:postgresql://localhost:5432/db_name
   SPRING_DATASOURCE_USERNAME={your_username}
   SPRING_DATASOURCE_PASSWORD={your_password}
   JWT_SECRET_KEY={your_256_bit_secret_key}
   #Mail Properties
   # Support email and app password can be fount/set in our email service settings
   SUPPORT_EMAIL=your_hostmailid
    APP_PASSWORD={app_password}
   

6. Run the Application Start the application from the main method in JwtDemoApplication.java (located in the root package). You can run it directly from your IDE or using the command:

 mvn spring-boot:run

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✅ Features

1. User authentication with JWT
2. Email Configuration for verification
3. Secure endpoints with role-based access control
4. Environment-based configuration
5. PostgreSQL database integration

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📂 Project Structure

├── src/
│ ├── main/
│ │ ├── java/com/learn/jwt_demo/
│ │ │ ├── config/
│ │ │ │ ├── ApplicationConfiguration.java
│ │ │ │ ├── EmailConfiguration.java
│ │ │ │ ├── JwtAuthenticationFilter.java
│ │ │ │ └── SecurityConfiguration.java
│ │ │ ├── controller/
│ │ │ │ ├── AuthenticationController.java
│ │ │ │ └── UserController.java
│ │ │ ├── dto/
│ │ │ │ ├── LoginUserDTO.java
│ │ │ │ ├── RegisterUserDTO.java
│ │ │ │ └── VerifyUserDTO.java
│ │ │ ├── model/
│ │ │ │ └── User.java
│ │ │ ├── repository/
│ │ │ │ └── UserRepository.java
│ │ │ ├── responses/
│ │ │ │ └── LoginResponse.java
│ │ │ ├── service/
│ │ │ │ ├── AuthenticationService.java
│ │ │ │ ├── EmailService.java
│ │ │ │ ├── JwtService.java
│ │ │ │ └── UserService.java
│ │ │ └── JwtDemoApplication.java
│ ├── resources/
│ │ ├── application.properties
│ │ └── data.sql
├── test/java/com/learn/jwt_demo/
│ └── JwtDemoApplicationTests.java
├── target/classes/
├── README.md
└── pom.xml

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📬 Contact

For any queries or suggestions, feel free to reach out via GitHub Issues.