Spring Boot : Can we use reactive Webfilter in existing spring mvc application?

Question

I am trying to incorporate spring reactive Webflux webfilter to existing spring boot web application and getting below error.

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APPLICATION FAILED TO START

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Description:

The bean 'conversionServicePostProcessor', defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/security/config/annotation/web/reactive/WebFluxSecurityConfiguration.class] and overriding is disabled.

question: Can we use reactive Webfilter in existing spring mvc application?

Thanks in advance.

Answer 1

No, you can't directly use reactive filters; the MVC stack uses the Servlet API, which has its own (blocking) filter mechanism. You might be able to extract the business logic into a common class and reference it from both a reactive and a blocking implementation.