Introduce alias for 'value' attribute in @ResponseStatus

Issue: SPR-11393

spring-test/src/test/java/org/springframework/test/web/servlet/samples/standalone/resultmatchers/StatusAssertionTests.java

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 
 package org.springframework.test.web.servlet.samples.standalone.resultmatchers;
 
-import org.junit.Before;
 import org.junit.Test;
 
 import org.springframework.http.HttpStatus;
@@ -38,12 +37,7 @@ import static org.springframework.test.web.servlet.setup.MockMvcBuilders.*;
  */
 public class StatusAssertionTests {
 
-	private MockMvc mockMvc;
-
-	@Before
-	public void setup() {
-		this.mockMvc = standaloneSetup(new StatusController()).build();
-	}
+	private final MockMvc mockMvc = standaloneSetup(new StatusController()).build();
 
 	@Test
 	public void testStatusInt() throws Exception {
@@ -86,7 +80,7 @@ public class StatusAssertionTests {
 		}
 
 		@RequestMapping("/badRequest")
-		@ResponseStatus(value=HttpStatus.BAD_REQUEST, reason="Expired token")
+		@ResponseStatus(code = HttpStatus.BAD_REQUEST, reason = "Expired token")
 		public @ResponseBody void badRequest(){
 		}
 

spring-web/src/main/java/org/springframework/web/bind/annotation/ResponseStatus.java

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,13 +22,18 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import org.springframework.core.annotation.AliasFor;
 import org.springframework.http.HttpStatus;
 
 /**
- * Marks a method or exception class with the status code and reason that should be returned. The status code is applied
- * to the HTTP response when the handler method is invoked, or whenever said exception is thrown.
+ * Marks a method or exception class with the status {@link #code} and
+ * {@link #reason} that should be returned.
+ *
+ * <p>The status code is applied to the HTTP response when the handler
+ * method is invoked, or whenever said exception is thrown.
  *
  * @author Arjen Poutsma
+ * @author Sam Brannen
  * @see org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver
  * @since 3.0
  */
@@ -38,16 +43,27 @@ import org.springframework.http.HttpStatus;
 public @interface ResponseStatus {
 
 	/**
-	 * The status code to use for the response.
-	 *
+	 * Alias for {@link #code}.
+	 */
+	@AliasFor(attribute = "code")
+	HttpStatus value() default HttpStatus.INTERNAL_SERVER_ERROR;
+
+	/**
+	 * The status <em>code</em> to use for the response.
+	 * <p>Default is {@link HttpStatus#INTERNAL_SERVER_ERROR}, which should
+	 * typically be changed to something more appropriate.
+	 * @since 4.2
 	 * @see javax.servlet.http.HttpServletResponse#setStatus(int)
 	 */
-	HttpStatus value();
+	@AliasFor(attribute = "value")
+	HttpStatus code() default HttpStatus.INTERNAL_SERVER_ERROR;
 
 	/**
-	 * The reason to be used for the response. <p>If this element is not set, it will default to the standard status
-	 * message for the status code. Note that due to the use of {@code HttpServletResponse.sendError(int, String)},
-	 * the response will be considered complete and should not be written to any further.
+	 * The <em>reason</em> to be used for the response.
+	 * <p>If this attribute is not set, it will default to the standard status
+	 * message for the status code. Note that due to the use of
+	 * {@code HttpServletResponse.sendError(int, String)}, the response will be
+	 * considered complete and should not be written to any further.
 	 *
 	 * @see javax.servlet.http.HttpServletResponse#sendError(int, String)
 	 */

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

@@ -917,7 +917,7 @@ public class AnnotationMethodHandlerAdapter extends WebContentGenerator
 
 			ResponseStatus responseStatusAnn = AnnotationUtils.findAnnotation(handlerMethod, ResponseStatus.class);
 			if (responseStatusAnn != null) {
-				HttpStatus responseStatus = responseStatusAnn.value();
+				HttpStatus responseStatus = responseStatusAnn.code();
 				String reason = responseStatusAnn.reason();
 				if (!StringUtils.hasText(reason)) {
 					webRequest.getResponse().setStatus(responseStatus.value());

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

@@ -379,7 +379,7 @@ public class AnnotationMethodHandlerExceptionResolver extends AbstractHandlerExc
 
 		ResponseStatus responseStatusAnn = AnnotationUtils.findAnnotation(handlerMethod, ResponseStatus.class);
 		if (responseStatusAnn != null) {
-			HttpStatus responseStatus = responseStatusAnn.value();
+			HttpStatus responseStatus = responseStatusAnn.code();
 			String reason = responseStatusAnn.reason();
 			if (!StringUtils.hasText(reason)) {
 				webRequest.getResponse().setStatus(responseStatus.value());

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

@@ -95,7 +95,7 @@ public class ResponseStatusExceptionResolver extends AbstractHandlerExceptionRes
 	protected ModelAndView resolveResponseStatus(ResponseStatus responseStatus, HttpServletRequest request,
 			HttpServletResponse response, Object handler, Exception ex) throws Exception {
 
-		int statusCode = responseStatus.value().value();
+		int statusCode = responseStatus.code().value();
 		String reason = responseStatus.reason();
 		if (this.messageSource != null) {
 			reason = this.messageSource.getMessage(reason, null, reason, LocaleContextHolder.getLocale());

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

@@ -84,7 +84,7 @@ public class ServletInvocableHandlerMethod extends InvocableHandlerMethod {
 	private void initResponseStatus() {
 		ResponseStatus annotation = getMethodAnnotation(ResponseStatus.class);
 		if (annotation != null) {
-			this.responseStatus = annotation.value();
+			this.responseStatus = annotation.code();
 			this.responseReason = annotation.reason();
 		}
 	}

spring-webmvc/src/test/java/org/springframework/web/servlet/config/annotation/WebMvcConfigurationSupportTests.java

@@ -372,7 +372,7 @@ public class WebMvcConfigurationSupportTests {
 	}
 
 
-	@ResponseStatus(value = HttpStatus.BAD_REQUEST,  reason = "exception.user.exists")
+	@ResponseStatus(code = HttpStatus.BAD_REQUEST, reason = "exception.user.exists")
 	@SuppressWarnings("serial")
 	public static class UserAlreadyExistsException extends RuntimeException {
 	}

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

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -166,7 +166,7 @@ public class AnnotationMethodHandlerExceptionResolverTests {
 		}
 
 		@ExceptionHandler(SocketException.class)
-		@ResponseStatus(value = HttpStatus.NOT_ACCEPTABLE, reason = "This is simply unacceptable!")
+		@ResponseStatus(code = HttpStatus.NOT_ACCEPTABLE, reason = "This is simply unacceptable!")
 		public String handleSocketException(Exception ex, HttpServletResponse response) {
 			return "Y:" + ClassUtils.getShortName(ex.getClass());
 		}

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

@@ -110,19 +110,16 @@ public class ResponseStatusExceptionResolverTests {
 	@ResponseStatus(HttpStatus.BAD_REQUEST)
 	@SuppressWarnings("serial")
 	private static class StatusCodeException extends Exception {
-
 	}
 
-	@ResponseStatus(value = HttpStatus.GONE, reason = "You suck!")
+	@ResponseStatus(code = HttpStatus.GONE, reason = "You suck!")
 	@SuppressWarnings("serial")
 	private static class StatusCodeAndReasonException extends Exception {
-
 	}
 
-	@ResponseStatus(value = HttpStatus.GONE, reason = "gone.reason")
+	@ResponseStatus(code = HttpStatus.GONE, reason = "gone.reason")
 	@SuppressWarnings("serial")
 	private static class StatusCodeAndReasonMessageException extends Exception {
-
 	}
 
 }

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

 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -2992,7 +2992,7 @@ public class ServletAnnotationControllerTests {
 	public static class ResponseStatusController {
 
 		@RequestMapping("/something")
-		@ResponseStatus(value = HttpStatus.CREATED, reason = "It's alive!")
+		@ResponseStatus(code = HttpStatus.CREATED, reason = "It's alive!")
 		public void handle(Writer writer) throws IOException {
 			writer.write("something");
 		}

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

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -353,14 +353,14 @@ public class RequestMappingHandlerAdapterIntegrationTests {
 			return "viewName";
 		}
 
-		@ResponseStatus(value=HttpStatus.ACCEPTED)
+		@ResponseStatus(HttpStatus.ACCEPTED)
 		@ResponseBody
 		public String handleRequestBody(@RequestBody byte[] bytes) throws Exception {
 			String requestBody = new String(bytes, "UTF-8");
 			return "Handled requestBody=[" + requestBody + "]";
 		}
 
-		@ResponseStatus(value=HttpStatus.ACCEPTED)
+		@ResponseStatus(code = HttpStatus.ACCEPTED)
 		@ResponseBody
 		public String handleAndValidateRequestBody(@Valid TestBean modelAttr, Errors errors) throws Exception {
 			return "Error count [" + errors.getErrorCount() + "]";

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

@@ -2657,7 +2657,7 @@ public class ServletAnnotationControllerHandlerMethodTests extends AbstractServl
 	public static class ResponseStatusController {
 
 		@RequestMapping("/something")
-		@ResponseStatus(value = HttpStatus.CREATED, reason = "It's alive!")
+		@ResponseStatus(code = HttpStatus.CREATED, reason = "It's alive!")
 		public void handle(Writer writer) throws IOException {
 			writer.write("something");
 		}

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

@@ -16,9 +16,6 @@
 
 package org.springframework.web.servlet.mvc.method.annotation;
 
-import static org.junit.Assert.*;
-import static org.mockito.Mockito.*;
-
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -26,7 +23,6 @@ import java.util.List;
 
 import javax.servlet.http.HttpServletResponse;
 
-import org.junit.Before;
 import org.junit.Test;
 
 import org.springframework.core.MethodParameter;
@@ -50,37 +46,30 @@ import org.springframework.web.method.support.HandlerMethodReturnValueHandlerCom
 import org.springframework.web.method.support.ModelAndViewContainer;
 import org.springframework.web.servlet.view.RedirectView;
 
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.*;
 
 /**
  * Test fixture with {@link ServletInvocableHandlerMethod}.
  *
  * @author Rossen Stoyanchev
+ * @author Sam Brannen
  */
 public class ServletInvocableHandlerMethodTests {
 
-	private HandlerMethodArgumentResolverComposite argumentResolvers;
+	private final HandlerMethodArgumentResolverComposite argumentResolvers = new HandlerMethodArgumentResolverComposite();
 
-	private HandlerMethodReturnValueHandlerComposite returnValueHandlers;
+	private final HandlerMethodReturnValueHandlerComposite returnValueHandlers = new HandlerMethodReturnValueHandlerComposite();
 
-	private ModelAndViewContainer mavContainer;
+	private final ModelAndViewContainer mavContainer = new ModelAndViewContainer();
 
-	private ServletWebRequest webRequest;
+	private final MockHttpServletRequest request = new MockHttpServletRequest();
 
-	private MockHttpServletRequest request;
+	private final MockHttpServletResponse response = new MockHttpServletResponse();
 
-	private MockHttpServletResponse response;
+	private final ServletWebRequest webRequest = new ServletWebRequest(this.request, this.response);
 
 
-	@Before
-	public void setUp() throws Exception {
-		this.returnValueHandlers = new HandlerMethodReturnValueHandlerComposite();
-		this.argumentResolvers = new HandlerMethodArgumentResolverComposite();
-		this.mavContainer = new ModelAndViewContainer();
-		this.request = new MockHttpServletRequest();
-		this.response = new MockHttpServletResponse();
-		this.webRequest = new ServletWebRequest(this.request, this.response);
-	}
-
 	@Test
 	public void invokeAndHandle_VoidWithResponseStatus() throws Exception {
 		ServletInvocableHandlerMethod handlerMethod = getHandlerMethod(new Handler(), "responseStatus");
@@ -279,11 +268,11 @@ public class ServletInvocableHandlerMethodTests {
 			return "view";
 		}
 
-		@ResponseStatus(value = HttpStatus.BAD_REQUEST)
+		@ResponseStatus(HttpStatus.BAD_REQUEST)
 		public void responseStatus() {
 		}
 
-		@ResponseStatus(value = HttpStatus.BAD_REQUEST, reason = "400 Bad Request")
+		@ResponseStatus(code = HttpStatus.BAD_REQUEST, reason = "400 Bad Request")
 		public String responseStatusWithReason() {
 			return "foo";
 		}
@@ -299,7 +288,6 @@ public class ServletInvocableHandlerMethodTests {
 		}
 	}
 
-	@SuppressWarnings("unused")
 	private static class MethodLevelResponseBodyHandler {
 
 		@ResponseBody
@@ -324,12 +312,11 @@ public class ServletInvocableHandlerMethodTests {
 			return new DeferredResult<>();
 		}
 
-		public ResponseEntity handleRawType() {
+		public ResponseEntity<Void> handleRawType() {
 			return ResponseEntity.ok().build();
 		}
 	}
 
-	@SuppressWarnings("unused")
 	private static class ExceptionRaisingReturnValueHandler implements HandlerMethodReturnValueHandler {
 
 		@Override