Spring Boot + OpenAPI Template

A clean, versioned Spring Boot template for building RESTful APIs with Swagger (Springdoc OpenAPI), grouped documentation, and custom headers — perfect for microservices or API-first projects.

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🚀 Features

• ✅ Spring Boot 3.x
• ✅ OpenAPI 3.1 with Springdoc
• ✅ API versioning (/v1, /v2) via GroupedOpenApi
• ✅ Custom headers (e.g. X-B3-Span-Id) documented in Swagger
• ✅ Shared metadata (contact, license, etc.) across versions

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📚 API Documentation

• Swagger UI: http://localhost:8080/swagger-ui.html
• OpenAPI JSON:
  • http://localhost:8080/api-docs/v1
  • http://localhost:8080/api-docs/v2

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📦 Getting Started

Prerequisites

• Java 17+
• Maven 3.8+

Run the App

./mvnw clean
./mvnw spring-boot:run