https://www.dropwizard.io - Cool.
Getting started - https://www.dropwizard.io/1.3.12/docs/getting-started.html#setting-up-using-maven Swagger support - https://github.com/smoketurner/dropwizard-swagger
https://doc.networknt.com/ (db manual - https://doc.networknt.com/tutorial/rest/openapi/database/)