# Spring Boot Skill

> Build Spring Boot 4.x applications following the best practices. Use these guidelines when developing Spring Boot applications that use Spring MVC, Spring Data JPA, Spring Modulith, Spring Security. Use these guidelines to create recommended Spring Boot package structure. Use these best practices while implementing REST APIs, entities/repositories, service layer, modular monoliths. Use these guidelines while writing tests for REST APIs and Web applications. Configure the recommended plugins and configurations to improve code quality, and testing while using Maven. Use these guidelines to use Spring Boot's Docker Compose support for local development. Use Taskfile for easier execution of common tasks while working with a Spring Boot application.

- Skill: `piomin/spring-boot-skill` (Agent Skill, multi-file: 11 files)
- Install (CLI): `npx skillmds@latest add piomin/spring-boot-skill`
- Raw SKILL.md: https://api.skillmd.com/api/skills/piomin/spring-boot-skill/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: piomin (https://skillmd.com/u/piomin)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/piomin/spring-boot-skill

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# Spring Boot Skill

Apply the practices below when developing Spring Boot applications. Read the linked reference only when working on that area.

## Maven pom.xml Configuration

Read [references/spring-boot-maven-config.md](references/spring-boot-maven-config.md) for Maven `pom.xml` configuration with supporting plugins and configurations to improve code quality, and testing.

## Package structure

Read [references/code-organization.md](references/code-organization.md) for domain-driven, module-based package layout and naming conventions.

## Spring Data JPA

Implement the repository and entity layer using [references/spring-data-jpa.md](references/spring-data-jpa.md).

## Service layer

Implement business logic in the service layer using [references/spring-service-layer.md](references/spring-service-layer.md).

## Spring MVC REST APIs

Implement REST APIs with Spring MVC using [references/spring-webmvc-rest-api.md](references/spring-webmvc-rest-api.md).

## Spring Modulith

Build a modular monolith with Spring Modulith using [references/spring-modulith.md](references/spring-modulith.md).

## REST API Testing

If building a REST API using Spring WebMVC, test Spring Boot REST APIs using [references/spring-boot-rest-api-testing.md](references/spring-boot-rest-api-testing.md).

### Web App Controller Testing
If building a web application using view rendering controllers, test the controller layer using [references/spring-boot-webapp-testing-with-mockmvctester.md](references/spring-boot-webapp-testing-with-mockmvctester.md).

### Spring Boot Docker Compose Support
To use Docker Compose support for local development, refer [references/spring-boot-docker-compose.md](references/spring-boot-docker-compose.md).

## Taskfile

Use [references/taskfile.md](references/taskfile.md) for easier commands execution.