springboot-patterns

Q: How do I install springboot-patterns?

Run npx skills add https://github.com/rohitg00/awesome-claude-code-toolkit --skill springboot-patterns in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/springboot-patterns/ (personal) or .claude/skills/springboot-patterns/ (project).

by rohitg00Backend & APIs

Spring Boot patterns including JPA repositories, REST controllers, layered services, and configuration

Installs: 188
Last 24h: —
Trending rank: —
Security: Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/rohitg00/awesome-claude-code-toolkit --skill springboot-patterns

01
Install
Run the command in your project. The CLI asks which agents to install for.
02
Describe the task
Ask your agent for something this skill covers. It loads springboot-patterns automatically when relevant.
03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Spring Boot Patterns

Layered Architecture

src/main/java/com/example/app/
  config/          # @Configuration beans
  controller/      # @RestController (thin, delegates to service)
  service/         # @Service (business logic)
  repository/      # @Repository (data access via JPA)
  model/
    entity/        # @Entity JPA classes
    dto/           # Request/response DTOs
    mapper/        # MapStruct or manual mapping
  exception/       # @ControllerAdvice, custom exceptions
  security/        # SecurityFilterChain, JWT filters

Controllers handle HTTP concerns. Services contain business logic. Repositories handle persistence.

REST Controller

@RestController
@RequestMapping("/api/v1/orders")
@RequiredArgsConstructor
public class OrderController {

    private final OrderService orderService;

    @GetMapping
    public Page<OrderResponse> list(
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "20") int size) {
        return orderService.findAll(PageRequest.of(page, size));
    }

    @PostMapping
    @ResponseStatus(HttpStatus.CREATED)
    public OrderResponse create(@Valid @RequestBody CreateOrderRequest request) {
        return orderService.create(request);
    }

    @GetMapping("/{id}")
    public OrderResponse getById(@PathVariable UUID id) {
        return orderService.findById(id);
    }
}

JPA Entity and Repository

@Entity
@Table(name = "orders")
@Getter @Setter @NoArgsConstructor
public class Order {
    @Id
    @GeneratedValue(strategy = GenerationType.UUID)
    private UUID id;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "customer_id", nullable = false)
    private Customer customer;

    @OneToMany(mappedBy = "order", cascade = CascadeType.ALL, orphanRemoval = true)
    private List<OrderItem> items = new ArrayList<>();

    @Enumerated(EnumType.STRING)
    private OrderStatus status = OrderStatus.PENDING;

    @CreationTimestamp
    private Instant createdAt;
}

public interface OrderRepository extends JpaRepository<Order, UUID> {
    @Query("SELECT o FROM Order o JOIN FETCH o.items WHERE o.customer.id = :customerId")
    List<Order> findByCustomerWithItems(@Param("customerId") UUID customerId);

    @EntityGraph(attributePaths = {"customer", "items"})
    Optional<Order> findWithDetailsById(UUID id);
}

Service Layer

@Service
@Transactional(readOnly = true)
@RequiredArgsConstructor
public class OrderService {

    private final OrderRepository orderRepository;
    private final OrderMapper orderMapper;
    private final EventPublisher eventPublisher;

    public OrderResponse findById(UUID id) {
        Order order = orderRepository.findWithDetailsById(id)
                .orElseThrow(() -> new ResourceNotFoundException("Order", id));
        return orderMapper.toResponse(order);
    }

    @Transactional
    public OrderResponse create(CreateOrderRequest request) {
        Order order = orderMapper.toEntity(request);
        order = orderRepository.save(order);
        eventPublisher.publish(new OrderCreatedEvent(order.getId()));
        return orderMapper.toResponse(order);
    }
}

Global Exception Handler

@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(ResourceNotFoundException.class)
    @ResponseStatus(HttpStatus.NOT_FOUND)
    public ProblemDetail handleNotFound(ResourceNotFoundException ex) {
        return ProblemDetail.forStatusAndDetail(HttpStatus.NOT_FOUND, ex.getMessage());
    }

    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ProblemDetail handleValidation(MethodArgumentNotValidException ex) {
        ProblemDetail detail = ProblemDetail.forStatus(HttpStatus.BAD_REQUEST);
        Map<String, String> errors = ex.getFieldErrors().stream()
                .collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
        detail.setProperty("errors", errors);
        return detail;
    }
}

Anti-Patterns

Injecting repositories directly into controllers (bypassing service layer)
Using FetchType.EAGER on entity relationships by default
Returning JPA entities directly from controllers instead of DTOs
Missing @Transactional(readOnly = true) on read-only service methods
Catching generic Exception instead of specific types
Hardcoding configuration values instead of using @Value or @ConfigurationProperties

Checklist

Controllers are thin and delegate to services
All JPA relationships use FetchType.LAZY by default
DTOs used for request/response, never raw entities
@Transactional applied at service level with correct read/write scoping
Validation annotations (@Valid, @NotNull, @Size) on request DTOs
Global exception handler returns ProblemDetail (RFC 7807)
Entity graphs or JOIN FETCH used to avoid N+1 queries
Integration tests use @SpringBootTest with test containers

FAQ

What does the springboot-patterns skill do?

Spring Boot patterns including JPA repositories, REST controllers, layered services, and configuration

How do I install springboot-patterns?

Run npx skills add https://github.com/rohitg00/awesome-claude-code-toolkit --skill springboot-patterns in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/springboot-patterns/ (personal) or .claude/skills/springboot-patterns/ (project).

Which AI agents can use springboot-patterns?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is springboot-patterns safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains springboot-patterns?

It is published by rohitg00 in rohitg00/awesome-claude-code-toolkit. It has 188 recorded installs.

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springboot-patterns

Install

Install

Describe the task

Review the result

SKILL.md

Spring Boot Patterns

Layered Architecture

REST Controller

JPA Entity and Repository

Service Layer

Global Exception Handler

Anti-Patterns

Checklist

FAQ

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