SpringBoot HttpMessageConvertersAutoConfiguration should be conditional on not being a reactive web application

Http message converters shouldn't be used in a reactive web application, but may be used in a servlet-based web application or a non-web application. We should update the conditions on HttpMessageConvertersAutoConfiguration accordingly to avoid their auto-configuration when running a reactive web application.

Comment From: dsyer

They are used in RestTemplate though, right, and there is autoconfiguration for that (probably needs to be picked apart and offered separately to WebClient)?

Comment From: wilkinsona

We talked about that, and decided that no one should be using RestTemplate in a reactive web application as it's a blocking API. We probably need an issue similar to this one to disable RestTemplate auto-configuration in the same situation.

Comment From: daslan31

What if I'm using FeignClient for invoking api's outside of the app? FeignClientsConfiguration requires these converters, in order to workaround this I'm creating these beans by myself

Comment From: wilkinsona

You should use https://github.com/Playtika/feign-reactive or similar in a reactive application.