Raise MethodArgumentNotValidException consistently

Closes gh-30100

spring-web/src/main/java/org/springframework/web/method/annotation/ModelAttributeMethodProcessor.java

@@ -174,7 +174,7 @@ public class ModelAttributeMethodProcessor implements HandlerMethodArgumentResol
 				}
 				validateIfApplicable(binder, parameter);
 				if (binder.getBindingResult().hasErrors() && isBindExceptionRequired(binder, parameter)) {
-					throw new BindException(binder.getBindingResult());
+					throw new MethodArgumentNotValidException(parameter, binder.getBindingResult());
 				}
 			}
 			// Value type adaptation, also covering java.util.Optional

spring-web/src/test/java/org/springframework/web/method/annotation/ModelAttributeMethodProcessorTests.java

@@ -28,9 +28,9 @@ import org.springframework.beans.testfixture.beans.TestBean;
 import org.springframework.core.MethodParameter;
 import org.springframework.core.annotation.SynthesizingMethodParameter;
 import org.springframework.format.support.DefaultFormattingConversionService;
-import org.springframework.validation.BindException;
 import org.springframework.validation.BindingResult;
 import org.springframework.validation.Errors;
+import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.WebDataBinder;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.SessionAttributes;
@@ -109,7 +109,7 @@ public class ModelAttributeMethodProcessorTests {
 
 
 	@Test
-	public void supportedParameters() throws Exception {
+	public void supportedParameters() {
 		assertThat(this.processor.supportsParameter(this.paramNamedValidModelAttr)).isTrue();
 		assertThat(this.processor.supportsParameter(this.paramModelAttr)).isTrue();
 
@@ -119,8 +119,8 @@ public class ModelAttributeMethodProcessorTests {
 	}
 
 	@Test
-	public void supportedParametersInDefaultResolutionMode() throws Exception {
+	public void supportedParametersInDefaultResolutionMode() {
-		processor = new ModelAttributeMethodProcessor(true);
+		this.processor = new ModelAttributeMethodProcessor(true);
 
 		// Only non-simple types, even if not annotated
 		assertThat(this.processor.supportsParameter(this.paramNamedValidModelAttr)).isTrue();
@@ -132,21 +132,21 @@ public class ModelAttributeMethodProcessorTests {
 	}
 
 	@Test
-	public void supportedReturnTypes() throws Exception {
+	public void supportedReturnTypes() {
-		processor = new ModelAttributeMethodProcessor(false);
+		this.processor = new ModelAttributeMethodProcessor(false);
 		assertThat(this.processor.supportsReturnType(returnParamNamedModelAttr)).isTrue();
 		assertThat(this.processor.supportsReturnType(returnParamNonSimpleType)).isFalse();
 	}
 
 	@Test
-	public void supportedReturnTypesInDefaultResolutionMode() throws Exception {
+	public void supportedReturnTypesInDefaultResolutionMode() {
-		processor = new ModelAttributeMethodProcessor(true);
+		this.processor = new ModelAttributeMethodProcessor(true);
 		assertThat(this.processor.supportsReturnType(returnParamNamedModelAttr)).isTrue();
 		assertThat(this.processor.supportsReturnType(returnParamNonSimpleType)).isTrue();
 	}
 
 	@Test
-	public void bindExceptionRequired() throws Exception {
+	public void bindExceptionRequired() {
 		assertThat(this.processor.isBindExceptionRequired(null, this.paramNonSimpleType)).isTrue();
 		assertThat(this.processor.isBindExceptionRequired(null, this.paramNamedValidModelAttr)).isFalse();
 	}
@@ -227,11 +227,13 @@ public class ModelAttributeMethodProcessorTests {
 
 		StubRequestDataBinder dataBinder = new StubRequestDataBinder(target, name);
 		dataBinder.getBindingResult().reject("error");
+
 		WebDataBinderFactory binderFactory = mock();
 		given(binderFactory.createBinder(this.request, target, name)).willReturn(dataBinder);
 
-		assertThatExceptionOfType(BindException.class).isThrownBy(() ->
+		assertThatExceptionOfType(MethodArgumentNotValidException.class).isThrownBy(() ->
 				this.processor.resolveArgument(this.paramNonSimpleType, this.container, this.request, binderFactory));
+
 		verify(binderFactory).createBinder(this.request, target, name);
 	}