Add HttpRequest.getMethodValue

This commit introduces a new method in HttpRequest:
`String getMethodValue`, which returns the HTTP method as a String.
Furthermore, HttpRequest.getMethod() has been given a default
implementation using this String value in combination with
`HttpMethod.resolve`.

Issue: SPR-15545

spring-test/src/main/java/org/springframework/mock/http/client/MockClientHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -66,6 +66,11 @@ public class MockClientHttpRequest extends MockHttpOutputMessage implements Clie
 		return this.httpMethod;
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.httpMethod.name();
+	}
+
 	public void setURI(URI uri) {
 		this.uri = uri;
 	}

spring-test/src/main/java/org/springframework/mock/http/server/reactive/MockServerHttpRequest.java

@@ -83,6 +83,11 @@ public class MockServerHttpRequest extends AbstractServerHttpRequest {
 		return this.httpMethod;
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.httpMethod.name();
+	}
+
 	@Override
 	public String getContextPath() {
 		return this.contextPath;

spring-web/src/main/java/org/springframework/http/HttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -32,7 +32,15 @@ public interface HttpRequest extends HttpMessage {
 	 * @return the HTTP method as an HttpMethod enum value, or {@code null}
 	 * if not resolvable (e.g. in case of a non-standard HTTP method)
 	 */
-	HttpMethod getMethod();
+	default HttpMethod getMethod() {
+		return HttpMethod.resolve(getMethodValue());
+	}
+
+	/**
+	 * Return the HTTP method of the request as a String
+	 * @return the HTTP method as a String
+	 */
+	String getMethodValue();
 
 	/**
 	 * Return the URI of the request.

spring-web/src/main/java/org/springframework/http/client/BufferingClientHttpRequestWrapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -44,6 +44,11 @@ final class BufferingClientHttpRequestWrapper extends AbstractBufferingClientHtt
 		return this.request.getMethod();
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.request.getMethodValue();
+	}
+
 	@Override
 	public URI getURI() {
 		return this.request.getURI();

spring-web/src/main/java/org/springframework/http/client/HttpComponentsAsyncClientHttpRequest.java

@@ -30,7 +30,6 @@ import org.apache.http.nio.entity.NByteArrayEntity;
 import org.apache.http.protocol.HttpContext;
 
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
 import org.springframework.util.concurrent.FailureCallback;
 import org.springframework.util.concurrent.FutureAdapter;
 import org.springframework.util.concurrent.ListenableFuture;
@@ -69,8 +68,8 @@ final class HttpComponentsAsyncClientHttpRequest extends AbstractBufferingAsyncC
 
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.resolve(this.httpRequest.getMethod());
+		return this.httpRequest.getMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/HttpComponentsClientHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -63,8 +63,8 @@ final class HttpComponentsClientHttpRequest extends AbstractBufferingClientHttpR
 
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.resolve(this.httpRequest.getMethod());
+		return this.httpRequest.getMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/HttpComponentsStreamingClientHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -31,7 +31,6 @@ import org.apache.http.message.BasicHeader;
 import org.apache.http.protocol.HttpContext;
 
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
 import org.springframework.http.MediaType;
 import org.springframework.http.StreamingHttpOutputMessage;
 
@@ -65,8 +64,8 @@ final class HttpComponentsStreamingClientHttpRequest extends AbstractClientHttpR
 
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.resolve(this.httpRequest.getMethod());
+		return this.httpRequest.getMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/InterceptingAsyncClientHttpRequest.java

@@ -75,7 +75,12 @@ class InterceptingAsyncClientHttpRequest extends AbstractBufferingAsyncClientHtt
 
 	@Override
 	public HttpMethod getMethod() {
-		return httpMethod;
+		return this.httpMethod;
+	}
+
+	@Override
+	public String getMethodValue() {
+		return this.httpMethod.name();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/InterceptingClientHttpRequest.java

@@ -59,6 +59,11 @@ class InterceptingClientHttpRequest extends AbstractBufferingClientHttpRequest {
 		return this.method;
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.method.name();
+	}
+
 	@Override
 	public URI getURI() {
 		return this.uri;

spring-web/src/main/java/org/springframework/http/client/Netty4ClientHttpRequest.java

@@ -77,6 +77,11 @@ class Netty4ClientHttpRequest extends AbstractAsyncClientHttpRequest implements
 		return this.method;
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.method.name();
+	}
+
 	@Override
 	public URI getURI() {
 		return this.uri;

spring-web/src/main/java/org/springframework/http/client/OkHttp3AsyncClientHttpRequest.java

@@ -63,6 +63,11 @@ class OkHttp3AsyncClientHttpRequest extends AbstractBufferingAsyncClientHttpRequ
 		return this.method;
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.method.name();
+	}
+
 	@Override
 	public URI getURI() {
 		return this.uri;

spring-web/src/main/java/org/springframework/http/client/OkHttp3ClientHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -56,6 +56,11 @@ class OkHttp3ClientHttpRequest extends AbstractBufferingClientHttpRequest {
 		return this.method;
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.method.name();
+	}
+
 	@Override
 	public URI getURI() {
 		return this.uri;

spring-web/src/main/java/org/springframework/http/client/SimpleBufferingAsyncClientHttpRequest.java

@@ -58,8 +58,8 @@ final class SimpleBufferingAsyncClientHttpRequest extends AbstractBufferingAsync
 
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.resolve(this.connection.getRequestMethod());
+		return this.connection.getRequestMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/SimpleBufferingClientHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -51,8 +51,8 @@ final class SimpleBufferingClientHttpRequest extends AbstractBufferingClientHttp
 
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.resolve(this.connection.getRequestMethod());
+		return this.connection.getRequestMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/SimpleStreamingAsyncClientHttpRequest.java

@@ -25,7 +25,6 @@ import java.util.concurrent.Callable;
 
 import org.springframework.core.task.AsyncListenableTaskExecutor;
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
 import org.springframework.util.StreamUtils;
 import org.springframework.util.concurrent.ListenableFuture;
 
@@ -64,8 +63,8 @@ final class SimpleStreamingAsyncClientHttpRequest extends AbstractAsyncClientHtt
 
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.resolve(this.connection.getRequestMethod());
+		return this.connection.getRequestMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/SimpleStreamingClientHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -52,8 +52,9 @@ final class SimpleStreamingClientHttpRequest extends AbstractClientHttpRequest {
 	}
 
 
-	public HttpMethod getMethod() {
+	@Override
-		return HttpMethod.resolve(this.connection.getRequestMethod());
+	public String getMethodValue() {
+		return this.connection.getRequestMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/client/support/HttpRequestWrapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -62,6 +62,14 @@ public class HttpRequestWrapper implements HttpRequest {
 		return this.request.getMethod();
 	}
 
+	/**
+	 * Return the method value of the wrapped request.
+	 */
+	@Override
+	public String getMethodValue() {
+		return this.request.getMethodValue();
+	}
+
 	/**
 	 * Return the URI of the wrapped request.
 	 */

spring-web/src/main/java/org/springframework/http/server/ServletServerHttpRequest.java

@@ -83,8 +83,8 @@ public class ServletServerHttpRequest implements ServerHttpRequest {
 	}
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.resolve(this.servletRequest.getMethod());
+		return this.servletRequest.getMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/server/reactive/ReactorServerHttpRequest.java

@@ -28,7 +28,6 @@ import org.springframework.core.io.buffer.DataBuffer;
 import org.springframework.core.io.buffer.NettyDataBufferFactory;
 import org.springframework.http.HttpCookie;
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
 import org.springframework.util.Assert;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
@@ -82,8 +81,8 @@ public class ReactorServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.valueOf(this.request.method().name());
+		return this.request.method().name();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/server/reactive/ServerHttpRequestDecorator.java

@@ -58,6 +58,11 @@ public class ServerHttpRequestDecorator implements ServerHttpRequest {
 		return getDelegate().getMethod();
 	}
 
+	@Override
+	public String getMethodValue() {
+		return getDelegate().getMethodValue();
+	}
+
 	@Override
 	public URI getURI() {
 		return getDelegate().getURI();

spring-web/src/main/java/org/springframework/http/server/reactive/ServletServerHttpRequest.java

@@ -39,7 +39,6 @@ import org.springframework.core.io.buffer.DataBuffer;
 import org.springframework.core.io.buffer.DataBufferFactory;
 import org.springframework.http.HttpCookie;
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
 import org.springframework.http.MediaType;
 import org.springframework.util.Assert;
 import org.springframework.util.LinkedCaseInsensitiveMap;
@@ -150,8 +149,8 @@ public class ServletServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.valueOf(getServletRequest().getMethod());
+		return getServletRequest().getMethod();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpRequest.java

@@ -34,7 +34,6 @@ import org.springframework.core.io.buffer.DataBuffer;
 import org.springframework.core.io.buffer.DataBufferFactory;
 import org.springframework.http.HttpCookie;
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
 import org.springframework.util.Assert;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
@@ -83,8 +82,8 @@ public class UndertowServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.valueOf(this.getUndertowExchange().getRequestMethod().toString());
+		return this.getUndertowExchange().getRequestMethod().toString();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/web/client/AsyncRestTemplate.java

@@ -662,6 +662,10 @@ public class AsyncRestTemplate extends org.springframework.http.client.support.I
 						return request.getMethod();
 					}
 					@Override
+					public String getMethodValue() {
+						return request.getMethodValue();
+					}
+					@Override
 					public URI getURI() {
 						return request.getURI();
 					}

spring-web/src/test/java/org/springframework/http/client/InterceptingClientHttpRequestFactoryTests.java

@@ -267,6 +267,11 @@ public class InterceptingClientHttpRequestFactoryTests {
 			return method;
 		}
 
+		@Override
+		public String getMethodValue() {
+			return method.name();
+		}
+
 		public void setMethod(HttpMethod method) {
 			this.method = method;
 		}

spring-web/src/test/java/org/springframework/http/server/reactive/RxNettyServerHttpRequest.java

@@ -31,7 +31,6 @@ import org.springframework.core.io.buffer.DataBuffer;
 import org.springframework.core.io.buffer.NettyDataBufferFactory;
 import org.springframework.http.HttpCookie;
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
 import org.springframework.util.Assert;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
@@ -93,8 +92,8 @@ public class RxNettyServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public HttpMethod getMethod() {
+	public String getMethodValue() {
-		return HttpMethod.valueOf(this.request.getHttpMethod().name());
+		return this.request.getHttpMethod().name();
 	}
 
 	@Override

spring-web/src/test/java/org/springframework/mock/http/server/reactive/test/MockServerHttpRequest.java

@@ -82,6 +82,11 @@ public class MockServerHttpRequest extends AbstractServerHttpRequest {
 		return this.httpMethod;
 	}
 
+	@Override
+	public String getMethodValue() {
+		return this.httpMethod.name();
+	}
+
 	@Override
 	public String getContextPath() {
 		return this.contextPath;