Internet Banking System

Java Spring Boot application simulating an Internet Banking System

🚀 About the Project

This project allows you to:

• Open bank accounts
• Make deposits
• Transfer funds between accounts (with automatic currency conversion)
• Manage users (admin functionality)
• Integrate authentication via Google OAuth2
• Send email notifications

The project uses an external API to retrieve exchange rates (EUR/UAH) and displays data via a web interface (HTML + Thymeleaf).

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🛠️ Technology Stack

• Java 17
• Spring Boot 3.2
• Spring Security + OAuth2 Client
• Spring Mail
• Thymeleaf + Bootstrap 5
• Maven
• Gmail SMTP
• Fixer API (for exchange rates)

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⚙️ Quick Start

1. Clone the repository:

   git clone https://github.com/IvashDima/JavaPro_FinalProject_InternetBanking.git
   cd JavaPro_FinalProject_InternetBanking

2. Create a .env.properties file in the project root with the following contents:

   spring.mail.username=your_email@gmail.com
   spring.mail.password=your_password
   spring.security.oauth2.client.registration.google.client-id=your_client-id
   spring.security.oauth2.client.registration.google.client-secret=your-client-secret

3. Set up your Google Cloud Console OAuth2 credentials with Authorized redirect URIs like:

   http://localhost:8886/login/oauth2/code/google
   

4. Run the application:

   mvn spring-boot:run

5. Open in your browser:

   http://localhost:8886/
   

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📷 Screenshots

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📂 Project Structure

src/main/
├── java/org/example/springbank/
│   ├── config/                 # Application and security configuration
│   ├── controllers/            # Request controllers
│   ├── dto/                    # Data Transfer Objects
│   ├── enums/                  # Enumerations
│   ├── exceptions/             # Exception handling
│   ├── json/                   # JSON-related functionality
│   ├── mail/                   # Email service
│   ├── models/                 # Data models
│   ├── repositories/           # Database repositories
│   ├── retrievers/             # External data retrievers (e.g., currency rates)
│   ├── services/               # Business logic
│   └── Application.java        # Main application entry point
└── resources/
    ├── templates/              # Thymeleaf templates
    └── application.properties  # Application configuration

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📌 Important Notes

• This is a student project created as part of a Java Pro course.
• Designed for demonstration purposes for potential employers, recruiters, and teachers.
• Focused on implementing clean architecture, security practices, and basic external API integrations.
• Sensitive credentials should always be protected using environment variables or secret managers.
• Google OAuth2 may require consent screen verification when sensitive data access is involved.
• The application is fully runnable locally without the need for a paid external API.

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📬 Contact

GitHub: IvashDima

LinkedIn: Dmytro Ivashchenko

Email: dnytsyk@gmail.com

Feel free to reach out if you have any questions or suggestions!

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📝 License

This project is provided for educational purposes only and does not have a specific license.

Feel free to contribute, suggest improvements, or fork the project! 🚀

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❓ FAQ

Q: OAuth2 login isn't working. What should I check?
A: Make sure the redirect URI in your Google Cloud Console matches the one in the app exactly.

Q: Emails are not sent.
A: Ensure your Gmail account allows less secure apps or use App Passwords. Also, there is a delay of a few minutes before the email is sent.

Q: Emails are not received. A: Ensure that your transaction is successful (the email is sent only after the transaction is successfully completed). Also, check your spam folder.