springdoc-openapi java library helps to automate the generation of API documentation using spring boot projects. springdoc-openapi works by examining an application at runtime to infer API semantics based on spring configurations, class structure and various annotations.

Automatically generates documentation in JSON/YAML and HTML format APIs. This documentation can be completed by comments using swagger-api annotations.

This library supports:

OpenAPI 3

Spring-boot v3 (Java 17 & Jakarta EE 9)

JSR-303, specifically for @NotNull, @Min, @Max, and @Size.

Swagger-ui

OAuth 2

GraalVM native images