Introduce alias for 'value' attribute in @RequestHeader

Issue: SPR-11393

spring-web/src/main/java/org/springframework/web/bind/annotation/RequestHeader.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.
@@ -22,9 +22,12 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import org.springframework.core.annotation.AliasFor;
+
 /**
  * Annotation which indicates that a method parameter should be bound to a web request header.
- * Supported for annotated handler methods in Servlet and Portlet environments.
+ *
+ * <p>Supported for annotated handler methods in Servlet and Portlet environments.
  *
  * <p>If the method parameter is {@link java.util.Map Map&lt;String, String&gt;} or
  * {@link org.springframework.util.MultiValueMap MultiValueMap&lt;String, String&gt;},
@@ -32,6 +35,7 @@ import java.lang.annotation.Target;
  * populated with all header names and values.
  *
  * @author Juergen Hoeller
+ * @author Sam Brannen
  * @since 3.0
  * @see RequestMapping
  * @see RequestParam
@@ -45,10 +49,18 @@ import java.lang.annotation.Target;
 public @interface RequestHeader {
 
 	/**
-	 * The name of the request header to bind to.
+	 * Alias for {@link #name}.
 	 */
+	@AliasFor(attribute = "name")
 	String value() default "";
 
+	/**
+	 * The name of the request header to bind to.
+	 * @since 4.2
+	 */
+	@AliasFor(attribute = "value")
+	String name() default "";
+
 	/**
 	 * Whether the header is required.
 	 * <p>Default is {@code true}, leading to an exception thrown in case

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

@@ -267,7 +267,7 @@ public class HandlerMethodInvoker {
 				}
 				else if (RequestHeader.class.isInstance(paramAnn)) {
 					RequestHeader requestHeader = (RequestHeader) paramAnn;
-					headerName = requestHeader.value();
+					headerName = requestHeader.name();
 					required = requestHeader.required();
 					defaultValue = parseDefaultValueAttribute(requestHeader.defaultValue());
 					annotationsFound++;

spring-web/src/main/java/org/springframework/web/method/annotation/RequestHeaderMethodArgumentResolver.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.
@@ -86,7 +86,7 @@ public class RequestHeaderMethodArgumentResolver extends AbstractNamedValueMetho
 	private static class RequestHeaderNamedValueInfo extends NamedValueInfo {
 
 		private RequestHeaderNamedValueInfo(RequestHeader annotation) {
-			super(annotation.value(), annotation.required(), annotation.defaultValue());
+			super(annotation.name(), annotation.required(), annotation.defaultValue());
 		}
 	}
 

spring-web/src/test/java/org/springframework/web/method/annotation/RequestHeaderMethodArgumentResolverTests.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.
@@ -141,10 +141,10 @@ public class RequestHeaderMethodArgumentResolverTests {
 		resolver.resolveArgument(paramNamedValueStringArray, null, webRequest, null);
 	}
 
-	public void params(@RequestHeader(value = "name", defaultValue = "bar") String param1,
+	public void params(@RequestHeader(name = "name", defaultValue = "bar") String param1,
 					   @RequestHeader("name") String[] param2,
-					   @RequestHeader(value = "name", defaultValue="#{systemProperties.systemProperty}") String param3,
-					   @RequestHeader(value = "name", defaultValue="#{request.contextPath}") String param4,
+					   @RequestHeader(name = "name", defaultValue="#{systemProperties.systemProperty}") String param3,
+					   @RequestHeader(name = "name", defaultValue="#{request.contextPath}") String param4,
 					   @RequestHeader("name") Map<?, ?> unsupported) {
 	}