Spring Boot Application Skill

Spring Boot Application

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

Agent Skills: Spring Boot Application

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