SPR-6709 Update changelog and add one test

Author: rstoyanchev

build-spring-framework/resources/changelog.txt

@@ -17,6 +17,7 @@ Changes in version 3.1 M2 (2011-05-31)
 * support for including @PathVariables in data binding
 * support for URI template variables in view names with the "redirect:" prefix
 * added a flag for extracting the value from single-key models in MappingJacksonJsonView
+* added support for @Valid with @RequestBody arguments
 * allow bean references in mvc:interceptor namespace elements
 * consolidated the initialization and use of MappedInterceptors in AbstractHandlerMapping
 * added Servlet 3.0 based WebApplicationInitializer mechanism for programmatic bootstrapping

org.springframework.web.servlet/src/main/java/org/springframework/web/servlet/mvc/support/DefaultHandlerExceptionResolver.java

@@ -49,6 +49,7 @@
  * <p>This exception resolver is enabled by default in the {@link org.springframework.web.servlet.DispatcherServlet}.
  *
  * @author Arjen Poutsma
+ * @author Rossen Stoyanchev
  * @since 3.0
  * @see #handleNoSuchRequestHandlingMethod
  * @see #handleHttpRequestMethodNotSupported
@@ -321,7 +322,7 @@ protected ModelAndView handleHttpMessageNotWritable(HttpMessageNotWritableExcept
 
 	/**
 	 * Handle the case where the object created from the body of a request has failed validation. The default
-	 * implementation sends an HTTP 500 error along with a message containing the errors.
+	 * implementation sends an HTTP 400 error along with a message containing the errors.
 	 * @param request current HTTP request
 	 * @param response current HTTP response
 	 * @param handler the executed handler, or <code>null</code> if none chosen

org.springframework.web.servlet/src/test/java/org/springframework/web/servlet/mvc/support/DefaultHandlerExceptionResolverTests.java

@@ -16,22 +16,27 @@
 
 package org.springframework.web.servlet.mvc.support;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
 import java.util.Collections;
 
-import static org.junit.Assert.*;
 import org.junit.Before;
 import org.junit.Test;
-
+import org.springframework.beans.TestBean;
 import org.springframework.beans.TypeMismatchException;
 import org.springframework.http.MediaType;
 import org.springframework.http.converter.HttpMessageNotReadableException;
 import org.springframework.http.converter.HttpMessageNotWritableException;
 import org.springframework.mock.web.MockHttpServletRequest;
 import org.springframework.mock.web.MockHttpServletResponse;
+import org.springframework.validation.BeanPropertyBindingResult;
 import org.springframework.web.HttpMediaTypeNotSupportedException;
 import org.springframework.web.HttpRequestMethodNotSupportedException;
 import org.springframework.web.bind.MissingServletRequestParameterException;
 import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.mvc.method.annotation.support.RequestBodyNotValidException;
 import org.springframework.web.servlet.mvc.multiaction.NoSuchRequestHandlingMethodException;
 
 /** @author Arjen Poutsma */
@@ -118,5 +123,17 @@ public void handleHttpMessageNotWritable() {
 		assertEquals("Invalid status code", 500, response.getStatus());
 	}
 
+	@Test
+	public void handleRequestBodyNotValid() {
+		BeanPropertyBindingResult errors = new BeanPropertyBindingResult(new TestBean(), "testBean");
+		errors.rejectValue("name", "invalid");
+		RequestBodyNotValidException ex = new RequestBodyNotValidException(errors);
+		ModelAndView mav = exceptionResolver.resolveException(request, response, null, ex);
+		assertNotNull("No ModelAndView returned", mav);
+		assertTrue("No Empty ModelAndView returned", mav.isEmpty());
+		assertEquals("Invalid status code", 400, response.getStatus());
+		assertTrue(response.getErrorMessage().startsWith("Request body content validation failed"));
+		assertTrue(response.getErrorMessage().contains("Field error in object 'testBean' on field 'name'"));
+	}
 
 }

org.springframework.web/src/main/java/org/springframework/web/bind/annotation/RequestMapping.java

@@ -94,7 +94,7 @@
  * the Servlet request HTTP contents. The request stream will be
  * converted to the declared method argument type using 
  * {@linkplain org.springframework.http.converter.HttpMessageConverter message
- * converters}.
+ * converters}. Such parameters may optionally be annotated with {@code @Valid}.
  * <li>{@link org.springframework.http.HttpEntity HttpEntity&lt;?&gt;} parameters
  * for access to the Servlet request HTTP headers and contents. The request stream will be
  * converted to the entity body using