Creating OpenAPI 3.0 Documentation for a Spring REST API
Documenting REST APIs is important so that consumers of these APIs can know exactly how to integrate them into their systems. This documentation can be written manually, which will be time-consuming and error-prone, or generated automatically using libraries. Here comes to play the springdoc-openapi library.
In this blog post, we will see how to use this library and integrate it into our spring boot project to have up-to-date documentation of our REST APIs.
Library description
springdoc-openapi is a Java library that automates the generation of API documentation using Spring boot projects.
It operates by analyzing an application during runtime to deduce API semantics from Spring configurations, class organization, and diverse annotations.
We should note that it is a community-based project, meaning that it’s not maintained by the contributors of the Spring Framework.
Example Code
This article is accompanied by a working code example on GitHub.
Setting up springdoc-openapi for Spring Boot 3
Spring Boot 3.x requires the use of version 2.x of springdoc-openapi.
