Setting up springdoc-openapi

In this section, we will configure springdoc-openapi in our Spring Boot application. Since we developed our REST APIs in the previous chapter, the next thing we need to do is create documentation for our endpoints. This is an essential part, especially in the development industry, as this will tell the developers what endpoints can be implemented, what the required requests and their formats are, and what response body to expect when calling the endpoint. This also reduces errors and conflicts regarding the API integration as the available endpoints are transparent. However, the major drawback of creating documentation manually is that it is tedious and error-prone. This is where springdoc-openapi comes into the picture.

First, let’s discuss what springdoc-openapi is. springdoc-openapi is a library that automates the generation of API documentation in Spring Boot projects. This automation is possible as the library uses annotations, class structures...