Remove redundant include from WebFluxTypeExcludeFilter

For webflux, security configuration is configured via a bean of type
`SecurityWebFilterChain` and not `ServerHttpSecurity`. We would have changed
the include to be `SecurityWebFilterChain` but the filter only applies to
beans registered via component scanning and not those registered in
`@Configuration` classes, making the includes redundant.

See gh-16088

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/web/reactive/WebFluxTypeExcludeFilter.java

@@ -29,7 +29,6 @@ import org.springframework.core.annotation.AnnotatedElementUtils;
 import org.springframework.core.convert.converter.Converter;
 import org.springframework.core.convert.converter.GenericConverter;
 import org.springframework.stereotype.Controller;
-import org.springframework.util.ClassUtils;
 import org.springframework.util.ObjectUtils;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.reactive.config.WebFluxConfigurer;
@@ -44,9 +43,6 @@ class WebFluxTypeExcludeFilter extends AnnotationCustomizableTypeExcludeFilter {
 
 	private static final Set<Class<?>> DEFAULT_INCLUDES;
 
-	private static final String[] OPTIONAL_INCLUDES = {
-			"org.springframework.security.config.web.server.ServerHttpSecurity" };
-
 	static {
 		Set<Class<?>> includes = new LinkedHashSet<>();
 		includes.add(ControllerAdvice.class);
@@ -55,14 +51,6 @@ class WebFluxTypeExcludeFilter extends AnnotationCustomizableTypeExcludeFilter {
 		includes.add(Converter.class);
 		includes.add(GenericConverter.class);
 		includes.add(WebExceptionHandler.class);
-		for (String optionalInclude : OPTIONAL_INCLUDES) {
-			try {
-				includes.add(ClassUtils.forName(optionalInclude, null));
-			}
-			catch (Exception ex) {
-				// Ignore
-			}
-		}
 		DEFAULT_INCLUDES = Collections.unmodifiableSet(includes);
 	}
 

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/web/reactive/WebFluxTypeExcludeFilterTests.java

@@ -25,7 +25,6 @@ import org.springframework.context.annotation.FilterType;
 import org.springframework.core.type.classreading.MetadataReader;
 import org.springframework.core.type.classreading.MetadataReaderFactory;
 import org.springframework.core.type.classreading.SimpleMetadataReaderFactory;
-import org.springframework.security.config.web.server.ServerHttpSecurity;
 import org.springframework.stereotype.Controller;
 import org.springframework.stereotype.Repository;
 import org.springframework.stereotype.Service;
@@ -54,7 +53,6 @@ public class WebFluxTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleWeb.class)).isFalse();
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
-		assertThat(excludes(filter, ExampleServerHttpSecurity.class)).isFalse();
 	}
 
 	@Test
@@ -67,7 +65,6 @@ public class WebFluxTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleWeb.class)).isFalse();
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
-		assertThat(excludes(filter, ExampleServerHttpSecurity.class)).isFalse();
 	}
 
 	@Test
@@ -80,7 +77,6 @@ public class WebFluxTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleWeb.class)).isTrue();
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
-		assertThat(excludes(filter, ExampleServerHttpSecurity.class)).isTrue();
 	}
 
 	@Test
@@ -93,7 +89,6 @@ public class WebFluxTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleWeb.class)).isFalse();
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isFalse();
-		assertThat(excludes(filter, ExampleServerHttpSecurity.class)).isFalse();
 	}
 
 	@Test
@@ -106,7 +101,6 @@ public class WebFluxTypeExcludeFilterTests {
 		assertThat(excludes(filter, ExampleWeb.class)).isFalse();
 		assertThat(excludes(filter, ExampleService.class)).isTrue();
 		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
-		assertThat(excludes(filter, ExampleServerHttpSecurity.class)).isFalse();
 	}
 
 	private boolean excludes(WebFluxTypeExcludeFilter filter, Class<?> type)
@@ -170,8 +164,4 @@ public class WebFluxTypeExcludeFilterTests {
 
 	}
 
-	static class ExampleServerHttpSecurity extends ServerHttpSecurity {
-
-	}
-
 }