I have already configured Keycloak role based access control with my java API project and it is deployed with Wildfly and runs without any errors. Since I have tested and confirmed the responses with Postman, I needed to use Swagger in-order to generate API documensts.
Using Swagger Inspector I created an API definition and exported that via SwaggerHUB to use it in SwaggerUI which I run locally. With web-origins and all the necessary steps configured in Keycloak and with authentication parameters set in Swagger script, I get the below error..
" Access to fetch at (api request) from origin (swagger ui path) has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request. "
I have noticed that if I bypass Keycloak, this works. What might be the best solution to overcome this issue?
I was able to resolve my issue referring this answer. I too added "enable-cors": true in keycloak.json in my Java back-end server which was Wildfly and tested the same implementation in server environment successfully.