Spring Boot supports stand-alone Java API services whose controllers, routing, request models, and response models can be generated from an OpenAPI definition treated as the source of truth. section 6.2.1
A practical OpenAPI-driven workflow:
- Run OpenAPI Generator with the Spring generator and configure controller, model, configuration, and base packages. section 6.2.1
- Inspect the generated Maven project, application properties, OpenAPI file, controllers, models, and configuration classes. section 6.2.1
- Implement controller methods with typed path variables, response entities, status codes, and generated model objects. section 6.2.1
- Add centralized exception handling and verify successful and invalid requests with curl and jq. section 6.2.1
Product lookup endpoint
A generated ProductsApi interface can be implemented by returning a Product populated with an identifier, name, description, price, and keywords. A valid UUID request returns JSON with HTTP 200; an invalid UUID returns a structured HTTP 400 error. section 6.2.1
