The Best Folder Structure for a Spring Boot Project

Organizing your Spring Boot project properly is crucial for maintainability, scalability, and efficient development.

Why Folder Structure Matters in Spring Boot

• Scalability: Makes it easier to add new features and modules.
• Maintainability: Keeps the codebase clean and manageable.
• Separation of Concerns: Ensures each part of the application has a clear role.

Recommended Spring Boot Folder Structure

/your-springboot-project
├── src/
│   ├── main/
│   │   ├── java/com/example/app/
│   │   │   ├── controller/    # REST controllers
│   │   │   ├── service/       # Business logic
│   │   │   ├── repository/    # Database interactions
│   │   │   ├── model/         # Entity and DTO classes
│   │   │   ├── config/        # Configuration classes
│   │   │   ├── exception/     # Custom exception handling
│   │   │   ├── AppApplication.java  # Main application entry point
│   │   ├── resources/
│   │   │   ├── application.properties  # Configurations
│   │   │   ├── static/        # Static files (CSS, JS, Images)
│   │   │   ├── templates/     # Thymeleaf templates (if used)
│   ├── test/                  # Test cases
├── pom.xml                     # Maven dependencies
├── README.md                   # Documentation
├── Dockerfile                  # Docker configuration (optional)

Best Practices for Structuring a Spring Boot Project

• Follow MVC Pattern: Separate concerns into Model, View, and Controller.
• Use DTOs for Data Transfer: Keep entity classes separate from API responses.
• Configuration in `config/`: Store application-wide settings in a dedicated folder.
• Follow Naming Conventions: Use meaningful and standard names for packages and classes.

Final Thoughts

A well-structured Spring Boot project ensures better maintainability and growth. By following best practices, you can build scalable and efficient applications.

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