Add required type to TypeMismatchException message args

Closes gh-35837

framework-docs/modules/ROOT/pages/web/webmvc/mvc-ann-rest-exceptions.adoc

@@ -175,7 +175,7 @@ Message codes and arguments for each error are also resolved via `MessageSource`
 
 | `TypeMismatchException`
 | (default)
-| `+{0}+` property name, `+{1}+` property value
+| `+{0}+` property name, `+{1}+` property value, `+{2}+` simple name of required type
 
 | `UnsatisfiedServletRequestParameterException`
 | (default)

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ResponseEntityExceptionHandler.java

@@ -466,7 +466,7 @@ public abstract class ResponseEntityExceptionHandler implements MessageSourceAwa
 
 	/**
 	 * Customize the handling of {@link TypeMismatchException}.
-	 * <p>By default this method creates a {@link ProblemDetail} with the status
+	 * <p>By default, this method creates a {@link ProblemDetail} with the status
 	 * and a short detail message, and also looks up an override for the detail
 	 * via {@link MessageSource}, before delegating to
 	 * {@link #handleExceptionInternal}.
@@ -480,7 +480,8 @@ public abstract class ResponseEntityExceptionHandler implements MessageSourceAwa
 	protected @Nullable ResponseEntity<Object> handleTypeMismatch(
 			TypeMismatchException ex, HttpHeaders headers, HttpStatusCode status, WebRequest request) {
 
-		Object[] args = {ex.getPropertyName(), ex.getValue()};
+		Object[] args = {ex.getPropertyName(), ex.getValue(),
+				(ex.getRequiredType() != null ? ex.getRequiredType().getSimpleName() : "")};
 		String defaultDetail = "Failed to convert '" + args[0] + "' with value: '" + args[1] + "'";
 		String messageCode = ErrorResponse.getDefaultDetailMessageCode(TypeMismatchException.class, null);
 		ProblemDetail body = createProblemDetail(ex, status, defaultDetail, messageCode, args, request);

spring-webmvc/src/test/java/org/springframework/web/servlet/mvc/method/annotation/ResponseEntityExceptionHandlerTests.java

@@ -245,7 +245,7 @@ class ResponseEntityExceptionHandlerTests {
 			StaticMessageSource messageSource = new StaticMessageSource();
 			messageSource.addMessage(
 					ErrorResponse.getDefaultDetailMessageCode(TypeMismatchException.class, null), locale,
-					"Failed to set {0} to value: {1}");
+					"Failed to set {0} to value: {1} for type {2}");
 
 			this.exceptionHandler.setMessageSource(messageSource);
 
@@ -253,7 +253,7 @@ class ResponseEntityExceptionHandlerTests {
 					new TypeMismatchException(new PropertyChangeEvent(this, "name", "John", "James"), String.class));
 
 			ProblemDetail body = (ProblemDetail) entity.getBody();
-			assertThat(body.getDetail()).isEqualTo("Failed to set name to value: James");
+			assertThat(body.getDetail()).isEqualTo("Failed to set name to value: James for type String");
 		}
 		finally {
 			LocaleContextHolder.resetLocaleContext();