Bumping versions to 2.1.6.BUILD-SNAPSHOT after release

* Fix bug in SpringEncoder (#225)

This commit fixes a bug in the SpringEncoder that causes the bodyType to
be ignored and not passed to generic message converters.

Fixes gh-225

* Fix after cherry-pick.

* Add Ahmad Mozafarnia to authors.

* Refactor tests.

Co-authored-by: Ahmad Mozafarnia <ahmad.mozafarnia@gmail.com>

README.adoc

@@ -1,4 +1,8 @@
-// Do not edit this file (e.g. go instead to src/main/asciidoc)
+////
+DO NOT EDIT THIS FILE. IT WAS GENERATED.
+Manual changes to this file will be lost when it is generated again.
+Edit the files in the src/main/asciidoc/ directory instead.
+////
 
 image:https://circleci.com/gh/spring-cloud/spring-cloud-openfeign.svg?style=svg["CircleCI", link="https://circleci.com/gh/spring-cloud/spring-cloud-openfeign"]
 
@@ -51,7 +55,7 @@ credentials and you already have those.
 
 The projects that require middleware generally include a
 `docker-compose.yml`, so consider using
-https://compose.docker.io/[Docker Compose] to run the middeware servers
+https://docs.docker.com/compose/[Docker Compose] to run the middeware servers
 in Docker containers. See the README in the
 https://github.com/spring-cloud-samples/scripts[scripts demo
 repository] for specific instructions about the common cases of mongo,
@@ -108,6 +112,8 @@ from the `file` menu.
 
 == Contributing
 
+:spring-cloud-build-branch: master
+
 Spring Cloud is released under the non-restrictive Apache 2.0 license,
 and follows a very standard Github development process, using Github
 tracker for issues and merging pull requests into master. If you want
@@ -151,4 +157,137 @@ added after the original pull request but before a merge.
   other target branch in the main project).
 * When writing a commit message please follow https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html[these conventions],
   if you are fixing an existing issue please add `Fixes gh-XXXX` at the end of the commit
-  message (where XXXX is the issue number).
+  message (where XXXX is the issue number).
+
+=== Checkstyle
+
+Spring Cloud Build comes with a set of checkstyle rules. You can find them in the `spring-cloud-build-tools` module. The most notable files under the module are:
+
+.spring-cloud-build-tools/
+----
+└── src
+    ├── checkstyle
+    │   └── checkstyle-suppressions.xml <3>
+    └── main
+        └── resources
+            ├── checkstyle-header.txt <2>
+            └── checkstyle.xml <1>
+----
+<1> Default Checkstyle rules
+<2> File header setup
+<3> Default suppression rules
+
+==== Checkstyle configuration
+
+Checkstyle rules are *disabled by default*. To add checkstyle to your project just define the following properties and plugins.
+
+.pom.xml
+----
+<properties>
+<maven-checkstyle-plugin.failsOnError>true</maven-checkstyle-plugin.failsOnError> <1>
+        <maven-checkstyle-plugin.failsOnViolation>true
+        </maven-checkstyle-plugin.failsOnViolation> <2>
+        <maven-checkstyle-plugin.includeTestSourceDirectory>true
+        </maven-checkstyle-plugin.includeTestSourceDirectory> <3>
+</properties>
+
+<build>
+        <plugins>
+            <plugin> <4>
+                <groupId>io.spring.javaformat</groupId>
+                <artifactId>spring-javaformat-maven-plugin</artifactId>
+            </plugin>
+            <plugin> <5>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-checkstyle-plugin</artifactId>
+            </plugin>
+        </plugins>
+
+    <reporting>
+        <plugins>
+            <plugin> <5>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-checkstyle-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </reporting>
+</build>
+----
+<1> Fails the build upon Checkstyle errors
+<2> Fails the build upon Checkstyle violations
+<3> Checkstyle analyzes also the test sources
+<4> Add the Spring Java Format plugin that will reformat your code to pass most of the Checkstyle formatting rules
+<5> Add checkstyle plugin to your build and reporting phases
+
+If you need to suppress some rules (e.g. line length needs to be longer), then it's enough for you to define a file under `${project.root}/src/checkstyle/checkstyle-suppressions.xml` with your suppressions. Example:
+
+.projectRoot/src/checkstyle/checkstyle-suppresions.xml
+----
+<?xml version="1.0"?>
+<!DOCTYPE suppressions PUBLIC
+		"-//Puppy Crawl//DTD Suppressions 1.1//EN"
+		"https://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+<suppressions>
+	<suppress files=".*ConfigServerApplication\.java" checks="HideUtilityClassConstructor"/>
+	<suppress files=".*ConfigClientWatch\.java" checks="LineLengthCheck"/>
+</suppressions>
+----
+
+It's advisable to copy the `${spring-cloud-build.rootFolder}/.editorconfig` and `${spring-cloud-build.rootFolder}/.springformat` to your project. That way, some default formatting rules will be applied. You can do so by running this script:
+
+```bash
+$ curl https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/.editorconfig -o .editorconfig
+$ touch .springformat
+```
+
+=== IDE setup
+
+==== Intellij IDEA
+
+In order to setup Intellij you should import our coding conventions, inspection profiles and set up the checkstyle plugin.
+The following files can be found in the https://github.com/spring-cloud/spring-cloud-build/tree/master/spring-cloud-build-tools[Spring Cloud Build] project.
+
+.spring-cloud-build-tools/
+----
+└── src
+    ├── checkstyle
+    │   └── checkstyle-suppressions.xml <3>
+    └── main
+        └── resources
+            ├── checkstyle-header.txt <2>
+            ├── checkstyle.xml <1>
+            └── intellij
+                ├── Intellij_Project_Defaults.xml <4>
+                └── Intellij_Spring_Boot_Java_Conventions.xml <5>
+----
+<1> Default Checkstyle rules
+<2> File header setup
+<3> Default suppression rules
+<4> Project defaults for Intellij that apply most of Checkstyle rules
+<5> Project style conventions for Intellij that apply most of Checkstyle rules
+
+.Code style
+
+image::https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/{spring-cloud-build-branch}/docs/src/main/asciidoc/images/intellij-code-style.png[Code style]
+
+Go to `File` -> `Settings` -> `Editor` -> `Code style`. There click on the icon next to the `Scheme` section. There, click on the `Import Scheme` value and pick the `Intellij IDEA code style XML` option. Import the `spring-cloud-build-tools/src/main/resources/intellij/Intellij_Spring_Boot_Java_Conventions.xml` file.
+
+.Inspection profiles
+
+image::https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/{spring-cloud-build-branch}/docs/src/main/asciidoc/images/intellij-inspections.png[Code style]
+
+Go to `File` -> `Settings` -> `Editor` -> `Inspections`. There click on the icon next to the `Profile` section. There, click on the `Import Profile` and import the `spring-cloud-build-tools/src/main/resources/intellij/Intellij_Project_Defaults.xml` file.
+
+.Checkstyle
+
+To have Intellij work with Checkstyle, you have to install the `Checkstyle` plugin. It's advisable to also install the `Assertions2Assertj` to automatically convert the JUnit assertions
+
+image::https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/{spring-cloud-build-branch}/docs/src/main/asciidoc/images/intellij-checkstyle.png[Checkstyle]
+
+Go to `File` -> `Settings` -> `Other settings` -> `Checkstyle`. There click on the `+` icon in the `Configuration file` section. There, you'll have to define where the checkstyle rules should be picked from. In the image above, we've picked the rules from the cloned Spring Cloud Build repository. However, you can point to the Spring Cloud Build's GitHub repository (e.g. for the `checkstyle.xml` : `https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle.xml`). We need to provide the following variables:
+
+- `checkstyle.header.file` - please point it to the Spring Cloud Build's, `spring-cloud-build-tools/src/main/resources/checkstyle-header.txt` file either in your cloned repo or via the `https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle-header.txt` URL.
+- `checkstyle.suppressions.file` - default suppressions. Please point it to the Spring Cloud Build's, `spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml` file either in your cloned repo or via the `https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml` URL.
+- `checkstyle.additional.suppressions.file` - this variable corresponds to suppressions in your local project. E.g. you're working on `spring-cloud-contract`. Then point to the `project-root/src/checkstyle/checkstyle-suppressions.xml` folder. Example for `spring-cloud-contract` would be: `/home/username/spring-cloud-contract/src/checkstyle/checkstyle-suppressions.xml`.
+
+IMPORTANT: Remember to set the `Scan Scope` to `All sources` since we apply checkstyle rules for production and test sources.

docs/pom.xml

@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-openfeign</artifactId>
-		<version>2.1.4.BUILD-SNAPSHOT</version>
+		<version>2.1.6.BUILD-SNAPSHOT</version>
 	</parent>
 	<artifactId>spring-cloud-openfeign-docs</artifactId>
 	<packaging>pom</packaging>

docs/src/main/asciidoc/appendix.adoc

@@ -0,0 +1,14 @@
+:numbered!:
+[appendix]
+[[common-application-properties]]
+== Common application properties
+
+include::_attributes.adoc[]
+
+Various properties can be specified inside your `application.properties` file, inside your `application.yml` file, or as command line switches.
+This appendix provides a list of common {project-full-name} properties and references to the underlying classes that consume them.
+
+NOTE: Property contributions can come from additional jar files on your classpath, so you should not consider this an exhaustive list.
+Also, you can define your own properties.
+
+include::_configprops.adoc[]

docs/src/main/asciidoc/spring-cloud-openfeign.adoc

@@ -487,3 +487,16 @@ public class DemoTemplate {
     String demoEndpoint(@SpringQueryMap Params params);
 }
 ----
+
+=== Troubleshooting
+
+==== Early Initialization Errors
+
+Depending on how you are using your Feign clients you may see initialization errors when starting your application.
+To work around this problem you can use an `ObjectProvider` when autowiring your client.
+
+[source,java,indent=0]
+----
+@Autowired
+ObjectProvider<TestFeginClient> testFeginClient;
+----

pom.xml

@@ -4,14 +4,14 @@
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>spring-cloud-openfeign</artifactId>
-	<version>2.1.4.BUILD-SNAPSHOT</version>
+	<version>2.1.6.BUILD-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>Spring Cloud OpenFeign</name>
 	<description>Spring Cloud OpenFeign</description>
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>2.1.8.BUILD-SNAPSHOT</version>
+		<version>2.1.11.BUILD-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 	<scm>
@@ -26,8 +26,8 @@
 	<properties>
 		<main.basedir>${basedir}</main.basedir>
 		<jackson.version>2.7.3</jackson.version>
-		<spring-cloud-commons.version>2.1.4.BUILD-SNAPSHOT</spring-cloud-commons.version>
-		<spring-cloud-netflix.version>2.1.4.BUILD-SNAPSHOT</spring-cloud-netflix.version>
+		<spring-cloud-commons.version>2.1.6.BUILD-SNAPSHOT</spring-cloud-commons.version>
+		<spring-cloud-netflix.version>2.1.6.BUILD-SNAPSHOT</spring-cloud-netflix.version>
 
 		<!-- Plugin versions -->
 		<maven-compiler-plugin.version>3.6.1</maven-compiler-plugin.version>

spring-cloud-openfeign-core/pom.xml

@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-openfeign</artifactId>
-		<version>2.1.4.BUILD-SNAPSHOT</version>
+		<version>2.1.6.BUILD-SNAPSHOT</version>
 		<relativePath>..</relativePath> <!-- lookup parent from repository -->
 	</parent>
 	<artifactId>spring-cloud-openfeign-core</artifactId>

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/SpringEncoder.java

@@ -35,10 +35,12 @@ import org.apache.commons.logging.LogFactory;
 
 import org.springframework.beans.factory.ObjectFactory;
 import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
+import org.springframework.cloud.openfeign.encoding.HttpEncoding;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpOutputMessage;
 import org.springframework.http.MediaType;
 import org.springframework.http.converter.ByteArrayHttpMessageConverter;
+import org.springframework.http.converter.GenericHttpMessageConverter;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.http.converter.protobuf.ProtobufHttpMessageConverter;
 import org.springframework.web.multipart.MultipartFile;
@@ -49,6 +51,7 @@ import static org.springframework.cloud.openfeign.support.FeignUtils.getHttpHead
 /**
  * @author Spencer Gibb
  * @author Scien Jus
+ * @author Ahmad Mozafarnia
  */
 public class SpringEncoder implements Encoder {
 
@@ -67,8 +70,8 @@ public class SpringEncoder implements Encoder {
 			throws EncodeException {
 		// template.body(conversionService.convert(object, String.class));
 		if (requestBody != null) {
-			Class<?> requestType = requestBody.getClass();
-			Collection<String> contentTypes = request.headers().get("Content-Type");
+			Collection<String> contentTypes = request.headers()
+					.get(HttpEncoding.CONTENT_TYPE);
 
 			MediaType requestContentType = null;
 			if (contentTypes != null && !contentTypes.isEmpty()) {
@@ -89,31 +92,24 @@ public class SpringEncoder implements Encoder {
 				}
 			}
 
-			for (HttpMessageConverter<?> messageConverter : this.messageConverters
+			for (HttpMessageConverter messageConverter : this.messageConverters
 					.getObject().getConverters()) {
-				if (messageConverter.canWrite(requestType, requestContentType)) {
-					if (log.isDebugEnabled()) {
-						if (requestContentType != null) {
-							log.debug("Writing [" + requestBody + "] as \""
-									+ requestContentType + "\" using [" + messageConverter
-									+ "]");
-						}
-						else {
-							log.debug("Writing [" + requestBody + "] using ["
-									+ messageConverter + "]");
-						}
-
+				FeignOutputMessage outputMessage;
+				try {
+					if (messageConverter instanceof GenericHttpMessageConverter) {
+						outputMessage = checkAndWrite(requestBody, bodyType,
+								requestContentType,
+								(GenericHttpMessageConverter) messageConverter, request);
 					}
-
-					FeignOutputMessage outputMessage = new FeignOutputMessage(request);
-					try {
-						@SuppressWarnings("unchecked")
-						HttpMessageConverter<Object> copy = (HttpMessageConverter<Object>) messageConverter;
-						copy.write(requestBody, requestContentType, outputMessage);
-					}
-					catch (IOException ex) {
-						throw new EncodeException("Error converting request body", ex);
+					else {
+						outputMessage = checkAndWrite(requestBody, requestContentType,
+								messageConverter, request);
 					}
+				}
+				catch (IOException ex) {
+					throw new EncodeException("Error converting request body", ex);
+				}
+				if (outputMessage != null) {
 					// clear headers
 					request.headers(null);
 					// converters can modify headers, so update the request
@@ -139,7 +135,7 @@ public class SpringEncoder implements Encoder {
 				}
 			}
 			String message = "Could not write request: no suitable HttpMessageConverter "
-					+ "found for request type [" + requestType.getName() + "]";
+					+ "found for request type [" + requestBody.getClass().getName() + "]";
 			if (requestContentType != null) {
 				message += " and content type [" + requestContentType + "]";
 			}
@@ -147,6 +143,49 @@ public class SpringEncoder implements Encoder {
 		}
 	}
 
+	@SuppressWarnings("unchecked")
+	private FeignOutputMessage checkAndWrite(Object body, MediaType contentType,
+			HttpMessageConverter converter, RequestTemplate request) throws IOException {
+		if (converter.canWrite(body.getClass(), contentType)) {
+			logBeforeWrite(body, contentType, converter);
+			FeignOutputMessage outputMessage = new FeignOutputMessage(request);
+			converter.write(body, contentType, outputMessage);
+			return outputMessage;
+		}
+		else {
+			return null;
+		}
+	}
+
+	@SuppressWarnings("unchecked")
+	private FeignOutputMessage checkAndWrite(Object body, Type genericType,
+			MediaType contentType, GenericHttpMessageConverter converter,
+			RequestTemplate request) throws IOException {
+		if (converter.canWrite(genericType, body.getClass(), contentType)) {
+			logBeforeWrite(body, contentType, converter);
+			FeignOutputMessage outputMessage = new FeignOutputMessage(request);
+			converter.write(body, genericType, contentType, outputMessage);
+			return outputMessage;
+		}
+		else {
+			return null;
+		}
+	}
+
+	private void logBeforeWrite(Object requestBody, MediaType requestContentType,
+			HttpMessageConverter messageConverter) {
+		if (log.isDebugEnabled()) {
+			if (requestContentType != null) {
+				log.debug("Writing [" + requestBody + "] as \"" + requestContentType
+						+ "\" using [" + messageConverter + "]");
+			}
+			else {
+				log.debug(
+						"Writing [" + requestBody + "] using [" + messageConverter + "]");
+			}
+		}
+	}
+
 	private final class FeignOutputMessage implements HttpOutputMessage {
 
 		private final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/support/SpringEncoderTests.java

@@ -16,10 +16,11 @@
 
 package org.springframework.cloud.openfeign.support;
 
-import java.io.IOException;
+import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
-import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 
 import feign.RequestTemplate;
@@ -27,7 +28,6 @@ import feign.codec.EncodeException;
 import feign.codec.Encoder;
 import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.mockito.ArgumentMatcher;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -35,12 +35,15 @@ import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
 import org.springframework.cloud.openfeign.FeignContext;
+import org.springframework.cloud.openfeign.encoding.HttpEncoding;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.ParameterizedTypeReference;
 import org.springframework.http.HttpInputMessage;
 import org.springframework.http.HttpOutputMessage;
 import org.springframework.http.MediaType;
 import org.springframework.http.converter.AbstractGenericHttpMessageConverter;
+import org.springframework.http.converter.GenericHttpMessageConverter;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.http.converter.HttpMessageNotReadableException;
 import org.springframework.http.converter.HttpMessageNotWritableException;
@@ -60,6 +63,7 @@ import static org.springframework.http.MediaType.MULTIPART_FORM_DATA_VALUE;
 /**
  * @author Spencer Gibb
  * @author Olga Maciaszek-Sharma
+ * @author Ahmad Mozafarnia
  */
 @RunWith(SpringJUnit4ClassRunner.class)
 @SpringBootTest(classes = SpringEncoderTests.Application.class, webEnvironment = WebEnvironment.RANDOM_PORT, value = {
@@ -74,6 +78,10 @@ public class SpringEncoderTests {
 	@Qualifier("myHttpMessageConverter")
 	private HttpMessageConverter<?> myConverter;
 
+	@Autowired
+	@Qualifier("myGenericHttpMessageConverter")
+	private GenericHttpMessageConverter<?> myGenericConverter;
+
 	@Test
 	public void testCustomHttpMessageConverter() {
 		Encoder encoder = this.context.getInstance("foo", Encoder.class);
@@ -93,7 +101,35 @@ public class SpringEncoderTests {
 
 		assertThat(request.requestCharset()).as("request charset is null").isNotNull();
 		assertThat(request.requestCharset()).as("request charset is wrong")
-				.isEqualTo(Charset.forName("UTF-8"));
+				.isEqualTo(StandardCharsets.UTF_8);
+	}
+
+	// gh-225
+	@Test
+	public void testCustomGenericHttpMessageConverter() {
+		Encoder encoder = this.context.getInstance("foo", Encoder.class);
+		assertThat(encoder).isNotNull();
+		RequestTemplate request = new RequestTemplate();
+
+		ParameterizedTypeReference<List<String>> stringListType = new ParameterizedTypeReference<List<String>>() {
+		};
+
+		request.header(HttpEncoding.CONTENT_TYPE, "application/mygenerictype");
+		encoder.encode(Collections.singletonList("hi"), stringListType.getType(),
+				request);
+
+		Collection<String> contentTypeHeader = request.headers().get("Content-Type");
+		assertThat(contentTypeHeader).as("missing content type header").isNotNull();
+		assertThat(contentTypeHeader.isEmpty()).as("missing content type header")
+				.isFalse();
+
+		String header = contentTypeHeader.iterator().next();
+		assertThat(header).as("content type header is wrong")
+				.isEqualTo("application/mygenerictype");
+
+		assertThat(request.requestCharset()).as("request charset is null").isNotNull();
+		assertThat(request.requestCharset()).as("request charset is wrong")
+				.isEqualTo(StandardCharsets.UTF_8);
 	}
 
 	@Test
@@ -178,6 +214,11 @@ public class SpringEncoderTests {
 			return new MyHttpMessageConverter();
 		}
 
+		@Bean
+		GenericHttpMessageConverter<?> myGenericHttpMessageConverter() {
+			return new MyGenericHttpMessageConverter();
+		}
+
 		private static class MyHttpMessageConverter
 				extends AbstractGenericHttpMessageConverter<Object> {
 
@@ -203,20 +244,77 @@ public class SpringEncoderTests {
 			@Override
 			protected void writeInternal(Object o, Type type,
 					HttpOutputMessage outputMessage)
-					throws IOException, HttpMessageNotWritableException {
+					throws HttpMessageNotWritableException {
 
 			}
 
 			@Override
 			protected Object readInternal(Class<?> clazz, HttpInputMessage inputMessage)
-					throws IOException, HttpMessageNotReadableException {
+					throws HttpMessageNotReadableException {
 				return null;
 			}
 
 			@Override
 			public Object read(Type type, Class<?> contextClass,
 					HttpInputMessage inputMessage)
-					throws IOException, HttpMessageNotReadableException {
+					throws HttpMessageNotReadableException {
+				return null;
+			}
+
+		}
+
+		private static class MyGenericHttpMessageConverter
+				extends AbstractGenericHttpMessageConverter<Object> {
+
+			MyGenericHttpMessageConverter() {
+				super(new MediaType("application", "mygenerictype"));
+			}
+
+			private boolean isStringList(Type type) {
+				if (type instanceof ParameterizedType) {
+					ParameterizedType parameterizedType = (ParameterizedType) type;
+					return parameterizedType.getRawType() == List.class
+							&& parameterizedType
+									.getActualTypeArguments()[0] == String.class;
+				}
+				else {
+					return false;
+				}
+			}
+
+			@Override
+			protected boolean supports(Class<?> clazz) {
+				return clazz == List.class;
+			}
+
+			@Override
+			public boolean canWrite(Type type, Class<?> clazz, MediaType mediaType) {
+				return canWrite(mediaType) && isStringList(type);
+			}
+
+			@Override
+			public boolean canRead(Type type, Class<?> contextClass,
+					MediaType mediaType) {
+				return canRead(mediaType) && isStringList(type);
+			}
+
+			@Override
+			protected void writeInternal(Object o, Type type,
+					HttpOutputMessage outputMessage)
+					throws HttpMessageNotWritableException {
+
+			}
+
+			@Override
+			public Object read(Type type, Class<?> contextClass,
+					HttpInputMessage inputMessage)
+					throws HttpMessageNotReadableException {
+				return null;
+			}
+
+			@Override
+			protected Object readInternal(Class<?> clazz, HttpInputMessage inputMessage)
+					throws HttpMessageNotReadableException {
 				return null;
 			}
 
@@ -224,27 +322,4 @@ public class SpringEncoderTests {
 
 	}
 
-	class MediaTypeMatcher implements ArgumentMatcher<MediaType> {
-
-		private MediaType mediaType;
-
-		MediaTypeMatcher(String type, String subtype) {
-			this.mediaType = new MediaType(type, subtype);
-		}
-
-		@Override
-		public boolean matches(MediaType argument) {
-			return this.mediaType.equals(argument);
-		}
-
-		@Override
-		public String toString() {
-			final StringBuffer sb = new StringBuffer("MediaTypeMatcher{");
-			sb.append("mediaType=").append(this.mediaType);
-			sb.append('}');
-			return sb.toString();
-		}
-
-	}
-
 }

spring-cloud-openfeign-dependencies/pom.xml

@@ -6,11 +6,11 @@
 	<parent>
 		<artifactId>spring-cloud-dependencies-parent</artifactId>
 		<groupId>org.springframework.cloud</groupId>
-		<version>2.1.8.BUILD-SNAPSHOT</version>
+		<version>2.1.11.BUILD-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 	<artifactId>spring-cloud-openfeign-dependencies</artifactId>
-	<version>2.1.4.BUILD-SNAPSHOT</version>
+	<version>2.1.6.BUILD-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>spring-cloud-openfeign-dependencies</name>
 	<description>Spring Cloud OpenFeign Dependencies</description>

spring-cloud-starter-openfeign/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-openfeign</artifactId>
-		<version>2.1.4.BUILD-SNAPSHOT</version>
+		<version>2.1.6.BUILD-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 	<artifactId>spring-cloud-starter-openfeign</artifactId>