Avoid bean method proxying in WebMVC and WebFlux config

This commit applies changes similar to what's been done in gh-9068, for
MVC and WebFlux configurations. This is now possible thanks to the
changes done in Spring Framework in
spring-projects/spring-framework#22596

Fixes gh-16427

Author: bclozel

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

@@ -211,7 +211,7 @@ private void customizeResourceHandlerRegistration(
 	/**
 	 * Configuration equivalent to {@code @EnableWebFlux}.
 	 */
-	@Configuration
+	@Configuration(proxyBeanMethods = false)
 	public static class EnableWebFluxConfiguration
 			extends DelegatingWebFluxConfiguration {
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.java

@@ -119,6 +119,7 @@
 import org.springframework.web.servlet.resource.EncodedResourceResolver;
 import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;
 import org.springframework.web.servlet.resource.ResourceResolver;
+import org.springframework.web.servlet.resource.ResourceUrlProvider;
 import org.springframework.web.servlet.resource.VersionResourceResolver;
 import org.springframework.web.servlet.view.BeanNameViewResolver;
 import org.springframework.web.servlet.view.ContentNegotiatingViewResolver;
@@ -466,7 +467,7 @@ static final class FaviconRequestHandler extends ResourceHttpRequestHandler {
 	/**
 	 * Configuration equivalent to {@code @EnableWebMvc}.
 	 */
-	@Configuration
+	@Configuration(proxyBeanMethods = false)
 	public static class EnableWebMvcConfiguration extends DelegatingWebMvcConfiguration {
 
 		private final WebMvcProperties mvcProperties;
@@ -486,8 +487,12 @@ public EnableWebMvcConfiguration(
 
 		@Bean
 		@Override
-		public RequestMappingHandlerAdapter requestMappingHandlerAdapter() {
-			RequestMappingHandlerAdapter adapter = super.requestMappingHandlerAdapter();
+		public RequestMappingHandlerAdapter requestMappingHandlerAdapter(
+				ContentNegotiationManager mvcContentNegotiationManager,
+				FormattingConversionService mvcConversionService,
+				Validator mvcValidator) {
+			RequestMappingHandlerAdapter adapter = super.requestMappingHandlerAdapter(
+					mvcContentNegotiationManager, mvcConversionService, mvcValidator);
 			adapter.setIgnoreDefaultModelOnRedirect(this.mvcProperties == null
 					|| this.mvcProperties.isIgnoreDefaultModelOnRedirect());
 			return adapter;
@@ -505,9 +510,13 @@ protected RequestMappingHandlerAdapter createRequestMappingHandlerAdapter() {
 		@Bean
 		@Primary
 		@Override
-		public RequestMappingHandlerMapping requestMappingHandlerMapping() {
+		public RequestMappingHandlerMapping requestMappingHandlerMapping(
+				ContentNegotiationManager mvcContentNegotiationManager,
+				FormattingConversionService mvcConversionService,
+				ResourceUrlProvider mvcResourceUrlProvider) {
 			// Must be @Primary for MvcUriComponentsBuilder to work
-			return super.requestMappingHandlerMapping();
+			return super.requestMappingHandlerMapping(mvcContentNegotiationManager,
+					mvcConversionService, mvcResourceUrlProvider);
 		}
 
 		@Bean
@@ -539,12 +548,15 @@ protected RequestMappingHandlerMapping createRequestMappingHandlerMapping() {
 		}
 
 		@Override
-		protected ConfigurableWebBindingInitializer getConfigurableWebBindingInitializer() {
+		protected ConfigurableWebBindingInitializer getConfigurableWebBindingInitializer(
+				FormattingConversionService mvcConversionService,
+				Validator mvcValidator) {
 			try {
 				return this.beanFactory.getBean(ConfigurableWebBindingInitializer.class);
 			}
 			catch (NoSuchBeanDefinitionException ex) {
-				return super.getConfigurableWebBindingInitializer();
+				return super.getConfigurableWebBindingInitializer(mvcConversionService,
+						mvcValidator);
 			}
 		}
 
@@ -558,12 +570,9 @@ protected ExceptionHandlerExceptionResolver createExceptionHandlerExceptionResol
 		}
 
 		@Override
-		protected void configureHandlerExceptionResolvers(
+		protected void extendHandlerExceptionResolvers(
 				List<HandlerExceptionResolver> exceptionResolvers) {
-			super.configureHandlerExceptionResolvers(exceptionResolvers);
-			if (exceptionResolvers.isEmpty()) {
-				addDefaultHandlerExceptionResolvers(exceptionResolvers);
-			}
+			super.extendHandlerExceptionResolvers(exceptionResolvers);
 			if (this.mvcProperties.isLogResolvedException()) {
 				for (HandlerExceptionResolver resolver : exceptionResolvers) {
 					if (resolver instanceof AbstractHandlerExceptionResolver) {