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refactor:spring-boot

Refactor bloated Spring Boot 3.x Java 21 applications into SOLID-compliant architectures with constructor injection and transaction boundaries.

9|1|Updated Jan 12, 2026
Search Tags:#architecture#refactor#SOLID#Spring Boot#clean-code#Java 21
One-click install
npx skills add https://github.com/SnakeO/claude-debug-and-refactor-skills-plugin --skill refactor-spring-boot
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: refactor:spring-boot
Source: https://github.com/SnakeO/claude-debug-and-refactor-skills-plugin/tree/main/plugins/debug-and-refactor/skills/refactor-spring-boot
Command: npx skills add https://github.com/SnakeO/claude-debug-and-refactor-skills-plugin --skill refactor-spring-boot

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill refactors Spring Boot and Java code to improve maintainability, readability, and adherence to enterprise best practices. It transforms messy Spring Boot applications into clean, well-structured solutions following SOLID principles and Spring Boot 3.x conventions. It addresses fat controllers, improper transaction boundaries, field injection anti-patterns, and scattered configuration. Leverages Java 21+ features including record patterns, pattern matching for switch, virtual threads, and sequenced collections.

Core Features & Use Cases

  • Modularization and SRP: Split monolithic controllers into focused services with clear boundaries.
  • Modern Java 21+ improvements: Use record patterns, pattern matching, and virtual threads to modernize code.
  • Best practices: Enforce constructor injection, proper @Transactional usage, and type-safe configuration peeling.
  • Use cases: When you inherit large Spring Boot apps with fat controllers and tangled configuration, apply refactors to restore maintainability and testability.

Quick Start

Use the refactor:spring-boot skill to analyze an existing Spring Boot project and generate a step-by-step plan for modularization and modernization.

Frequently Asked Questions about refactor:spring-boot

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I refactor a fat controller in Spring Boot to follow SOLID principles?▼

Refactoring a fat controller in Spring Boot involves splitting monolithic controllers into focused services with clear boundaries. This skill enforces modularization and the Single Responsibility Principle to restore maintainability and testability in large applications.

What is the best way to migrate field injection to constructor injection in Spring Boot 3.x?▼

Migrating field injection to constructor injection in Spring Boot 3.x is enforced by this skill as a modern best practice. It transforms tangled configuration and anti-patterns into type-safe, maintainable code structures step by step.

How do I fix improper transaction boundaries in a Java 21 Spring Boot application?▼

Fixing improper transaction boundaries in a Java 21 Spring Boot application requires enforcing proper @Transactional usage. This skill targets these specific issues to ensure clean, maintainable, and SOLID-compliant architectures.

Can I use this refactoring skill with Java 21 features like virtual threads and record patterns?▼

Yes, you can use this refactoring skill with Java 21 features. It leverages record patterns, pattern matching for switch, virtual threads, and sequenced collections to modernize Spring Boot 3.x projects effectively.

How do I plan a step-by-step modularization of a bloated Spring Boot project?▼

Planning a step-by-step modularization of a bloated Spring Boot project starts by analyzing the existing codebase. This skill generates an incremental, test-backed plan to untangle scattered configuration and enforce modern conventions.

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