I have a spring boot MVC java Web app. I\'ve been able to integrate Springfox for API documentation. I can visually see all of the APIs when server is up and running.
Swagger has tool for generating offline docs.
The tool is "Swagger2Markup" which is located @ Github.
The output of "Swagger2Markup" can be used as an alternative to swagger-ui and can be served as static content.
Here is an Example
Good luck! :)