spring-boot-application

SKILL.md

Spring Boot Application

Table of Contents

Overview

When to Use

Quick Start

Reference Guides

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:

<!-- pom.xml -->
<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example</groupId>
    <artifactId>api-service</artifactId>
    <version>1.0.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.1.0</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide
Contents

Spring Boot Project Setup
Spring Boot Project Setup

Entity Models with JPA Annotations
Entity Models with JPA Annotations

Repository Layer with Spring Data JPA
Repository Layer with Spring Data JPA

Service Layer with Business Logic
Service Layer with Business Logic

REST Controllers with Request/Response Handling
REST Controllers with Request/Response Handling

Spring Security Configuration
Spring Security Configuration

Application Configuration
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

1d:[