Build enterprise Spring Boot applications with annotations, dependency injection, data persistence, REST controllers, and security. Use when developing Spring applications, managing beans, implementing services, and configuring Spring Boot projects.

Spring Boot Application Table of Contents [Overview]( overview) [When to Use]( when to use) [Quick Start]( quick start) [Reference Guides]( reference guides) [Best Practices]( best practices) Overview Develop production ready Spring Boot applications with proper annotation based configuration, dependency injection, REST controllers, JPA data persistence, service layers, and security implementation following Spring conventions. When to Use Building Spring Boot REST APIs Implementing service oriented architectures Configuring data persistence with JPA Managing dependency injection Implementing Spring Security Building microservices with Spring Boot Quick Start Minimal working example: Reference Guides Detailed implementations in the references/ directory: Guide Contents [Spring Boot Project Setup](references/spring boot project setup.md) Spring Boot Project Setup [Entity Models with JPA Annotations](references/entity models with jpa annotations.md) Entity Models with JPA Annotations [Repository Layer with Spring Data JPA](references/repository layer with spring data jpa.md) Repository Layer with Spring Data JPA [Service Layer with Business Logic](references/service layer with business logic.md) Service Layer with Business Logic [REST Controllers with Request/Response Handling](references/rest controllers with requestresponse handling.md) REST Controllers with Request/Response Handling [Spring Security Configuration](references/spring security configuration.md) Spring Security Configuration [Application Configuration](references/application configuration.md) Application Configuration Best Practices ✅ DO Use dependency injection for loose coupling Implement service layer for business logic Use repositories for data access Leverage Spring Security for authentication Use @Transactional for transaction management Validate input in controllers Return appropriate HTTP status codes Use DTOs for request/response mapping Implement proper exception handling Use Spring's @Async for async operations ❌ DON'T Put business logic in controllers Access database directly in controllers Store secrets in configuration files Use eager loading for large relationships Ignore transaction boundaries Return database entities in API responses Implement authentication in controllers Use raw SQL without parameterized queries Forget to validate user input

spring-boot-application