Clean up warnings in spring-web

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

@@ -39,7 +39,6 @@ import org.apache.http.protocol.HttpContext;
 import org.springframework.beans.factory.DisposableBean;
 import org.springframework.http.HttpMethod;
 import org.springframework.util.Assert;
-import org.springframework.util.ClassUtils;
 
 /**
  * {@link org.springframework.http.client.ClientHttpRequestFactory} implementation that

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

@@ -24,7 +24,6 @@ import io.netty.handler.codec.http.cookie.DefaultCookie;
 import org.reactivestreams.Publisher;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
-import reactor.io.netty.http.HttpClient;
 import reactor.io.netty.http.HttpClientRequest;
 
 import org.springframework.core.io.buffer.DataBuffer;

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

@@ -17,14 +17,11 @@
 package org.springframework.http.client.reactive;
 
 import java.util.Collection;
-import java.util.function.Function;
 
-import io.netty.buffer.ByteBuf;
 import reactor.core.publisher.Flux;
 import reactor.io.netty.http.HttpClientResponse;
 
 import org.springframework.core.io.buffer.DataBuffer;
-import org.springframework.core.io.buffer.DataBufferFactory;
 import org.springframework.core.io.buffer.NettyDataBufferFactory;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
@@ -96,4 +93,5 @@ public class ReactorClientHttpResponse implements ClientHttpResponse {
 				"status=" + getStatusCode() +
 				'}';
 	}
-}
+
+}

spring-web/src/main/java/org/springframework/http/codec/json/JsonObjectDecoder.java

@@ -38,11 +38,11 @@ import org.springframework.util.MimeType;
  * Decode an arbitrary split byte stream representing JSON objects to a byte
  * stream where each chunk is a well-formed JSON object.
  *
- * This class does not do any real parsing or validation. A sequence of byte
+ * <p>This class does not do any real parsing or validation. A sequence of bytes
  * is considered a JSON object/array if it contains a matching number of opening
  * and closing braces/brackets.
  *
- * Based on  <a href="https://github.com/netty/netty/blob/master/codec/src/main/java/io/netty/handler/codec/json/JsonObjectDecoder.java">Netty JsonObjectDecoder</a>
+ * <p>Based on <a href="https://github.com/netty/netty/blob/master/codec/src/main/java/io/netty/handler/codec/json/JsonObjectDecoder.java">Netty JsonObjectDecoder</a>
  *
  * @author Sebastien Deleuze
  * @since 5.0
@@ -220,7 +220,6 @@ class JsonObjectDecoder extends AbstractDecoder<DataBuffer> {
 			 * Override this method if you want to filter the json objects/arrays that
 			 * get passed through the pipeline.
 			 */
-			@SuppressWarnings("UnusedParameters")
 			protected ByteBuf extractObject(ByteBuf buffer, int index, int length) {
 				return buffer.slice(index, length).retain();
 			}

spring-web/src/main/java/org/springframework/http/converter/ResourceRegionHttpMessageConverter.java

@@ -79,7 +79,7 @@ public class ResourceRegionHttpMessageConverter extends AbstractGenericHttpMessa
 	@Override
 	public boolean canWrite(Type type, Class<?> clazz, MediaType mediaType) {
 		if (!(type instanceof ParameterizedType)) {
-			return ResourceRegion.class.isAssignableFrom((Class) type);
+			return ResourceRegion.class.isAssignableFrom((Class<?>) type);
 		}
 		ParameterizedType parameterizedType = (ParameterizedType) type;
 		if (!(parameterizedType.getRawType() instanceof Class)) {

spring-web/src/main/java/org/springframework/http/converter/reactive/CodecHttpMessageConverter.java

@@ -181,7 +181,6 @@ public class CodecHttpMessageConverter<T> implements HttpMessageConverter<T> {
 	 * @param elementType the type of element for encoding
 	 * @return the content type, or {@code null}
 	 */
-	@SuppressWarnings("UnusedParameters")
 	protected MediaType getDefaultContentType(ResolvableType elementType) {
 		return (!this.writableMediaTypes.isEmpty() ? this.writableMediaTypes.get(0) : null);
 	}

spring-web/src/main/java/org/springframework/http/converter/reactive/HttpMessageConverter.java

@@ -100,4 +100,5 @@ public interface HttpMessageConverter<T> {
 	Mono<Void> write(Publisher<? extends T> inputStream,
 			ResolvableType type, MediaType contentType,
 			ReactiveHttpOutputMessage outputMessage);
-}
+
+}

spring-web/src/main/java/org/springframework/http/converter/reactive/ResourceHttpMessageConverter.java

@@ -39,7 +39,7 @@ import org.springframework.util.ResourceUtils;
 /**
  * Implementation of {@link HttpMessageConverter} that can read and write
  * {@link Resource Resources} and supports byte range requests.
- **
+ *
  * @author Arjen Poutsma
  * @since 5.0
  */
@@ -53,6 +53,7 @@ public class ResourceHttpMessageConverter extends CodecHttpMessageConverter<Reso
 		super(new ResourceEncoder(bufferSize), new ResourceDecoder());
 	}
 
+
 	@Override
 	public Mono<Void> write(Publisher<? extends Resource> inputStream,
 			ResolvableType type, MediaType contentType,
@@ -92,8 +93,7 @@ public class ResourceHttpMessageConverter extends CodecHttpMessageConverter<Reso
 				ZeroCopyHttpOutputMessage zeroCopyResponse =
 						(ZeroCopyHttpOutputMessage) outputMessage;
 
-				return zeroCopyResponse
-						.writeWith(file.get(), (long) 0, file.get().length());
+				return zeroCopyResponse.writeWith(file.get(), 0, file.get().length());
 			}
 		}
 
@@ -127,5 +127,4 @@ public class ResourceHttpMessageConverter extends CodecHttpMessageConverter<Reso
 		return Optional.empty();
 	}
 
-
 }

spring-web/src/main/java/org/springframework/http/converter/support/AllEncompassingFormHttpMessageConverter.java

@@ -16,8 +16,6 @@
 
 package org.springframework.http.converter.support;
 
-import javax.xml.transform.Source;
-
 import org.springframework.http.converter.FormHttpMessageConverter;
 import org.springframework.http.converter.json.GsonHttpMessageConverter;
 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;

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

@@ -27,7 +27,6 @@ import javax.servlet.http.HttpServletResponse;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.util.Assert;
-import org.springframework.util.ClassUtils;
 import org.springframework.util.CollectionUtils;
 
 /**

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

@@ -114,6 +114,7 @@ public class UndertowServerHttpResponse extends AbstractServerHttpResponse
 		try {
 			StreamSinkChannel responseChannel =
 					getUndertowExchange().getResponseChannel();
+			@SuppressWarnings("resource")
 			FileChannel in = new FileInputStream(file).getChannel();
 			long result = responseChannel.transferFrom(in, position, count);
 			if (result < count) {

spring-web/src/main/java/org/springframework/remoting/httpinvoker/HttpComponentsHttpInvokerRequestExecutor.java

@@ -43,7 +43,6 @@ import org.springframework.context.i18n.LocaleContext;
 import org.springframework.context.i18n.LocaleContextHolder;
 import org.springframework.remoting.support.RemoteInvocationResult;
 import org.springframework.util.Assert;
-import org.springframework.util.ClassUtils;
 import org.springframework.util.StringUtils;
 
 /**

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

@@ -23,7 +23,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import javax.xml.transform.Source;
 
 import org.springframework.core.ParameterizedTypeReference;
 import org.springframework.http.HttpEntity;

spring-web/src/main/java/org/springframework/web/client/reactive/WebClient.java

@@ -205,7 +205,7 @@ public final class WebClient {
 			}
 		}
 
-		@SuppressWarnings("unchecked")
+		@SuppressWarnings({ "unchecked", "rawtypes" })
 		protected Mono<Void> writeRequestBody(Publisher<?> content,
 				ResolvableType requestType, ClientHttpRequest request,
 				List<HttpMessageConverter<?>> messageConverters) {

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -25,7 +25,8 @@ import org.springframework.http.HttpMethod;
  */
 public class OkHttpAsyncClientHttpRequestFactoryTests extends AbstractAsyncHttpRequestFactoryTestCase {
 
-    @Override
+	@Override
+	@SuppressWarnings("deprecation")
     protected AsyncClientHttpRequestFactory createRequestFactory() {
         return new OkHttpClientHttpRequestFactory();
     }

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -26,6 +26,7 @@ import org.springframework.http.HttpMethod;
 public class OkHttpClientHttpRequestFactoryTests extends AbstractHttpRequestFactoryTestCase {
 
 	@Override
+	@SuppressWarnings("deprecation")
 	protected ClientHttpRequestFactory createRequestFactory() {
 		return new OkHttpClientHttpRequestFactory();
 	}

spring-web/src/test/java/org/springframework/http/codec/json/JacksonJsonDecoderTests.java

@@ -84,9 +84,7 @@ public class JacksonJsonDecoderTests extends AbstractDataBufferAllocatingTestCas
 				assertValues(new Pojo("f1", "b1"), new Pojo("f2", "b2"));
 	}
 
-	@SuppressWarnings("unused")
 	void handle(List<Pojo> list) {
 	}
 
-
 }

spring-web/src/test/java/org/springframework/http/codec/xml/Jaxb2EncoderTests.java

@@ -34,9 +34,9 @@ import org.springframework.http.MediaType;
 import org.springframework.http.codec.Pojo;
 
 import static org.custommonkey.xmlunit.XMLAssert.assertXMLEqual;
-import static org.custommonkey.xmlunit.XMLAssert.fail;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 /**
  * @author Sebastien Deleuze

spring-web/src/test/java/org/springframework/http/converter/json/SpringHandlerInstantiatorTests.java

@@ -197,7 +197,6 @@ public class SpringHandlerInstantiatorTests {
 		}
 
 		// Only needed when compiling against Jackson 2.7; gone in 2.8
-		@SuppressWarnings("deprecation")
 		public JavaType typeFromId(String s) {
 			return TypeFactory.defaultInstance().constructFromCanonical(s);
 		}

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

@@ -35,9 +35,8 @@ import org.springframework.web.client.RestTemplate;
 import static org.junit.Assert.assertThat;
 
 /**
- * Temporarily does not extend AbstractHttpHandlerIntegrationTests.
- *
  * @author Stephane Maldini
+ * @since 5.0
  */
 public class AsyncIntegrationTests extends AbstractHttpHandlerIntegrationTests {
 
@@ -50,12 +49,11 @@ public class AsyncIntegrationTests extends AbstractHttpHandlerIntegrationTests {
 		return new AsyncHandler();
 	}
 
-	@SuppressWarnings("unchecked")
 	@Test
 	public void basicTest() throws Exception {
 		URI url = new URI("http://localhost:" + port);
-		ResponseEntity<String> response = new RestTemplate().exchange(RequestEntity.get(url)
-		                                                                           .build(), String.class);
+		ResponseEntity<String> response = new RestTemplate().exchange(
+				RequestEntity.get(url).build(), String.class);
 
 		assertThat(response.getBody(), Matchers.equalTo("hello"));
 	}
@@ -65,8 +63,8 @@ public class AsyncIntegrationTests extends AbstractHttpHandlerIntegrationTests {
 		@Override
 		public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
 			return response.writeWith(Flux.just("h", "e", "l", "l", "o")
-			                            .delay(Duration.ofMillis(100))
-			                            .publishOn(asyncGroup)
+										.delay(Duration.ofMillis(100))
+										.publishOn(asyncGroup)
 					.collect(dataBufferFactory::allocateBuffer, (buffer, str) -> buffer.write(str.getBytes())));
 		}
 	}

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.util.ArrayList;
@@ -37,7 +38,6 @@ import static org.junit.Assert.*;
  * @author Rossen Stoyanchev
  * @author Stephane Maldini
  */
-@SuppressWarnings("ThrowableResultOfMethodCallIgnored")
 public class ChannelSendOperatorTests {
 
 	private OneByOneAsyncWriter writer;
@@ -176,15 +176,4 @@ public class ChannelSendOperatorTests {
 		}
 	}
 
-	private final static Subscription NO_OP_SUBSCRIPTION = new Subscription() {
-
-		@Override
-		public void request(long n) {
-		}
-
-		@Override
-		public void cancel() {
-		}
-	};
-
 }

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

@@ -19,8 +19,6 @@ package org.springframework.http.server.reactive;
 import org.junit.Before;
 import org.junit.Test;
 
-import static org.springframework.web.client.reactive.ClientWebRequestBuilders.get;
-import static org.springframework.web.client.reactive.ResponseExtractors.bodyStream;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 import reactor.core.test.TestSubscriber;
@@ -87,4 +85,5 @@ public class FlushingIntegrationTests extends AbstractHttpHandlerIntegrationTest
 			return response.writeWith(responseBody);
 		}
 	}
+
 }

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

@@ -89,17 +89,11 @@ public class RandomHandlerIntegrationTests extends AbstractHttpHandlerIntegratio
 						assertEquals(REQUEST_SIZE, (long) size);
 					});
 
-
-
 			response.getHeaders().setContentLength(RESPONSE_SIZE);
 
 			return requestSizeMono.then(response.writeWith(multipleChunks()));
 		}
 
-		private Publisher<DataBuffer> singleChunk() {
-			return Mono.just(randomBuffer(RESPONSE_SIZE));
-		}
-
 		private Publisher<DataBuffer> multipleChunks() {
 			int chunkSize = RESPONSE_SIZE / CHUNKS;
 			return Flux.range(1, CHUNKS).map(integer -> randomBuffer(chunkSize));

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

@@ -56,7 +56,7 @@ public class ZeroCopyIntegrationTests extends AbstractHttpHandlerIntegrationTest
 
 		RestTemplate restTemplate = new RestTemplate();
 
-		RequestEntity request =
+		RequestEntity<?> request =
 				RequestEntity.get(new URI("http://localhost:" + port)).build();
 
 		ResponseEntity<byte[]> response = restTemplate.exchange(request, byte[].class);

spring-web/src/test/java/org/springframework/remoting/caucho/CauchoRemotingTests.java

@@ -38,7 +38,6 @@ import static org.junit.Assert.*;
  * @author Sam Brannen
  * @since 16.05.2003
  */
-@SuppressWarnings("deprecation")
 public class CauchoRemotingTests {
 
 	@Rule

spring-web/src/test/java/org/springframework/web/server/handler/ExceptionHandlingHttpHandlerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -13,8 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.web.server.handler;
 
+package org.springframework.web.server.handler;
 
 import java.net.URI;
 
@@ -37,8 +37,8 @@ import static org.junit.Assert.assertEquals;
 
 /**
  * @author Rossen Stoyanchev
+ * @since 5.0
  */
-@SuppressWarnings("ThrowableResultOfMethodCallIgnored")
 public class ExceptionHandlingHttpHandlerTests {
 
 	private MockServerHttpResponse response;

spring-web/src/test/java/org/springframework/web/server/session/WebSessionIntegrationTests.java

@@ -13,13 +13,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.web.server.session;
 
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.time.Clock;
 import java.time.Duration;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -133,7 +133,6 @@ public class WebSessionIntegrationTests extends AbstractHttpHandlerIntegrationTe
 		assertNotNull(headerValues);
 		assertEquals(1, headerValues.size());
 
-		List<String> data = new ArrayList<>();
 		for (String s : headerValues.get(0).split(";")){
 			if (s.startsWith("SESSION=")) {
 				return s.substring("SESSION=".length());