Allow HttpMethod as a controller method argument

Issue: SPR-11425

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -73,6 +73,7 @@ import java.util.concurrent.Callable;
  * <li>{@link java.io.OutputStream} / {@link java.io.Writer} for generating
  * the response's content. This will be the raw OutputStream/Writer as
  * exposed by the Servlet/Portlet API.
+ * <li>{@link org.springframework.http.HttpMethod} for the HTTP request method</li>
  * <li>{@link PathVariable @PathVariable} annotated parameters (Servlet-only)
  * for access to URI template values (i.e. /hotels/{hotel}). Variable values will be
  * converted to the declared method argument type. By default, the URI template

spring-web/src/main/java/org/springframework/web/context/request/ServletWebRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -24,6 +24,8 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
 
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;
@@ -235,6 +237,14 @@ public class ServletWebRequest extends ServletRequestAttributes implements Nativ
 		return sb.toString();
 	}
 
+	/**
+	 * Return the HTTP method of the request.
+	 * @since 4.0.2
+	 */
+	public HttpMethod getHttpMethod() {
+		return HttpMethod.valueOf(getRequest().getMethod().trim().toUpperCase());
+	}
+
 
 	@Override
 	public String toString() {