springmvc - Fails to Validate Request Unless Request Wrapper is Specific Type

[Ryan Daniels]

In using Spring Boot, there are many types of filters that can wrap requests. For example, as part of Spring HATEOAS, it has a filter for dealing with X-Forwarded-* headers that has its own wrapper:

https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/web/filter/ForwardedHeaderFilter.html

When this is in place, validation does not happen because in OpenApiValidationInterceptor:

(servletRequest instanceof ContentCachingRequestWrapper || servletRequest instanceof ResettableRequestServletWrapper)

This should not prevent validation from executing.

[Ryan Daniels]

I was able to get around the issue by using @Order:

    @Bean
    @Order(Ordered.LOWEST_PRECEDENCE)
    Filter openApiValidationFilter() {

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[Ryan Daniels]

It would probably be a good idea to add this to the documentation.

[Sven Döring]

That is the correct way to solve this issue. And yes, it would fit good into the documentation.