Add Encoder constructor to HttpMessageConverterView

spring-web-reactive/src/main/java/org/springframework/web/reactive/result/view/HttpMessageConverterView.java

@@ -25,7 +25,9 @@ import org.reactivestreams.Publisher;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.ResolvableType;
+import org.springframework.core.codec.Encoder;
 import org.springframework.http.MediaType;
+import org.springframework.http.converter.reactive.CodecHttpMessageConverter;
 import org.springframework.http.converter.reactive.HttpMessageConverter;
 import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.ui.ModelMap;
@@ -48,6 +50,19 @@ public class HttpMessageConverterView implements View {
 	private final List<MediaType> mediaTypes;
 
 
+	/**
+	 * Create a {@code View} with the given {@code Encoder}.
+	 * Internally this creates
+	 * {@link CodecHttpMessageConverter#CodecHttpMessageConverter(Encoder)
+	 * CodecHttpMessageConverter(Encoder)}.
+	 */
+	public HttpMessageConverterView(Encoder<?> encoder) {
+		this(new CodecHttpMessageConverter<>(encoder));
+	}
+
+	/**
+	 * Create a View that delegates to the given message converter.
+	 */
 	public HttpMessageConverterView(HttpMessageConverter<?> converter) {
 		Assert.notNull(converter, "'converter' is required.");
 		this.converter = converter;
@@ -55,6 +70,9 @@ public class HttpMessageConverterView implements View {
 	}
 
 
+	/**
+	 * Return the configured message converter.
+	 */
 	public HttpMessageConverter<?> getConverter() {
 		return this.converter;
 	}

spring-web-reactive/src/test/java/org/springframework/web/reactive/DispatcherHandlerErrorTests.java

@@ -18,7 +18,6 @@ package org.springframework.web.reactive;
 
 import java.net.URI;
 import java.util.Collections;
-import java.util.List;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -30,7 +29,6 @@ import reactor.core.util.SignalKind;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.core.codec.support.StringDecoder;
 import org.springframework.core.codec.support.StringEncoder;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.core.convert.support.DefaultConversionService;
@@ -63,7 +61,9 @@ import org.springframework.web.server.handler.FilteringWebHandler;
 import org.springframework.web.server.session.WebSessionManager;
 
 import static org.hamcrest.CoreMatchers.startsWith;
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertThat;
 import static org.mockito.Mockito.mock;
 
 /**

spring-web-reactive/src/test/java/org/springframework/web/reactive/result/view/HttpMessageConverterViewTests.java

@@ -35,12 +35,9 @@ import org.springframework.core.codec.support.JacksonJsonEncoder;
 import org.springframework.core.codec.support.Jaxb2Encoder;
 import org.springframework.core.codec.support.Pojo;
 import org.springframework.core.codec.support.StringEncoder;
-import org.springframework.core.io.buffer.DataBuffer;
 import org.springframework.core.io.buffer.support.DataBufferTestUtils;
 import org.springframework.http.HttpMethod;
 import org.springframework.http.MediaType;
-import org.springframework.http.converter.reactive.CodecHttpMessageConverter;
-import org.springframework.http.converter.reactive.HttpMessageConverter;
 import org.springframework.http.server.reactive.MockServerHttpRequest;
 import org.springframework.http.server.reactive.MockServerHttpResponse;
 import org.springframework.ui.ExtendedModelMap;
@@ -74,8 +71,7 @@ public class HttpMessageConverterViewTests {
 
 	@Before
 	public void setup() throws Exception {
-		HttpMessageConverter<?> converter = new CodecHttpMessageConverter<>(new JacksonJsonEncoder());
+		this.view = new HttpMessageConverterView(new JacksonJsonEncoder());
-		this.view = new HttpMessageConverterView(converter);
 		this.model = new ExtendedModelMap();
 		this.result = new HandlerResult(new Object(), null, ResolvableType.NONE, model);
 	}
@@ -127,8 +123,7 @@ public class HttpMessageConverterViewTests {
 
 	@Test
 	public void extractObjectMultipleMatchesNotSupported() throws Exception {
-		HttpMessageConverter<?> converter = new CodecHttpMessageConverter<>(new StringEncoder());
+		HttpMessageConverterView view = new HttpMessageConverterView(new StringEncoder());
-		HttpMessageConverterView view = new HttpMessageConverterView(converter);
 		view.setModelKeys(new HashSet<>(Arrays.asList("foo1", "foo2")));
 		this.model.addAttribute("foo1", "bar1");
 		this.model.addAttribute("foo2", "bar2");
@@ -145,8 +140,7 @@ public class HttpMessageConverterViewTests {
 
 	@Test
 	public void extractObjectNotSupported() throws Exception {
-		HttpMessageConverter<?> converter = new CodecHttpMessageConverter<>(new Jaxb2Encoder());
+		HttpMessageConverterView view = new HttpMessageConverterView(new Jaxb2Encoder());
-		HttpMessageConverterView view = new HttpMessageConverterView(converter);
 		view.setModelKeys(new HashSet<>(Collections.singletonList("foo1")));
 		this.model.addAttribute("foo1", "bar1");