upgrade Ribbon to version 2.0.0.

pom.xml

@@ -26,7 +26,7 @@
 		<eureka.version>1.1.147</eureka.version>
 		<feign.version>7.3.0</feign.version>
 		<hystrix.version>1.4.0</hystrix.version>
-		<ribbon.version>2.0-RC13</ribbon.version>
+		<ribbon.version>2.0.0</ribbon.version>
 		<zuul.version>1.0.28</zuul.version>
 		<netflix.rxjava.version>0.20.7</netflix.rxjava.version>
 		<java.version>1.7</java.version>
@@ -239,6 +239,11 @@
 				</exclusions>
 			</dependency>
 			<dependency>
+				<groupId>com.netflix.ribbon</groupId>
+				<artifactId>ribbon-loadbalancer</artifactId>
+				<version>${ribbon.version}</version>
+			</dependency>
+			<dependency>
 				<groupId>com.netflix.rxjava</groupId>
 				<artifactId>rxjava-core</artifactId>
 				<version>${netflix.rxjava.version}</version>

spring-cloud-netflix-core/pom.xml

@@ -54,6 +54,11 @@
 			<artifactId>eureka-core</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>com.netflix.ribbon</groupId>
+			<artifactId>ribbon-loadbalancer</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<!-- Eureka core deps that are now optional -->
 		<dependency>
 			<groupId>com.thoughtworks.xstream</groupId>

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/route/RibbonCommand.java

@@ -21,8 +21,6 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.List;
 
-import javax.ws.rs.core.MultivaluedMap;
-
 import com.netflix.client.http.HttpRequest;
 import com.netflix.client.http.HttpRequest.Builder;
 import com.netflix.client.http.HttpRequest.Verb;
@@ -37,6 +35,7 @@ import com.netflix.hystrix.HystrixCommandProperties.ExecutionIsolationStrategy;
 import com.netflix.niws.client.http.RestClient;
 import com.netflix.zuul.constants.ZuulConstants;
 import com.netflix.zuul.context.RequestContext;
+import org.springframework.util.MultiValueMap;
 
 /**
  * Hystrix wrapper around Eureka Ribbon command
@@ -45,6 +44,7 @@ import com.netflix.zuul.context.RequestContext;
  * https://github.com/Netflix/zuul/blob/master/zuul-netflix/src/main/java/com/
  * netflix/zuul/dependency/ribbon/hystrix/RibbonCommand.java
  */
+@SuppressWarnings("deprecation")
 public class RibbonCommand extends HystrixCommand<HttpResponse> {
 
 	private RestClient restClient;
@@ -55,24 +55,24 @@ public class RibbonCommand extends HystrixCommand<HttpResponse> {
 	
 	private Boolean retryable;
 
-	private MultivaluedMap<String, String> headers;
+	private MultiValueMap<String, String> headers;
 
-	private MultivaluedMap<String, String> params;
+	private MultiValueMap<String, String> params;
 
 	private InputStream requestEntity;
 
 	public RibbonCommand(RestClient restClient, Verb verb, String uri,
 			Boolean retryable,
-			MultivaluedMap<String, String> headers,
-			MultivaluedMap<String, String> params, InputStream requestEntity)
+			MultiValueMap<String, String> headers,
+            MultiValueMap<String, String> params, InputStream requestEntity)
 			throws URISyntaxException {
 		this("default", restClient, verb, uri, retryable , headers, params, requestEntity);
 	}
 
 	public RibbonCommand(String commandKey, RestClient restClient, Verb verb, String uri,
 			Boolean retryable,
-			MultivaluedMap<String, String> headers,
-			MultivaluedMap<String, String> params, InputStream requestEntity)
+            MultiValueMap<String, String> headers,
+            MultiValueMap<String, String> params, InputStream requestEntity)
 			throws URISyntaxException {
 		super(getSetter(commandKey));
 		this.restClient = restClient;

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/route/RibbonRoutingFilter.java

@@ -20,13 +20,11 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Collection;
-import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import javax.ws.rs.core.MultivaluedMap;
 
 import lombok.extern.apachecommons.CommonsLog;
 
@@ -43,7 +41,6 @@ import com.netflix.niws.client.http.RestClient;
 import com.netflix.zuul.ZuulFilter;
 import com.netflix.zuul.context.RequestContext;
 import com.netflix.zuul.exception.ZuulException;
-import com.sun.jersey.core.util.MultivaluedMapImpl;
 
 @CommonsLog
 public class RibbonRoutingFilter extends ZuulFilter {
@@ -125,7 +122,7 @@ public class RibbonRoutingFilter extends ZuulFilter {
 		Map<String, Object> info = this.helper.debug(verb.verb(), uri, headers, params,
 				requestEntity);
 		RibbonCommand command = new RibbonCommand(service, restClient, verb, uri, retryable,
-				convertHeaders(headers), convertHeaders(params), requestEntity);
+				headers, params, requestEntity);
 		try {
 			HttpResponse response = command.execute();
 			this.helper.appendDebug(info, response.getStatus(),
@@ -150,18 +147,9 @@ public class RibbonRoutingFilter extends ZuulFilter {
 
 	private MultiValueMap<String, String> revertHeaders(
 			Map<String, Collection<String>> headers) {
-		MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
+		MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
 		for (Entry<String, Collection<String>> entry : headers.entrySet()) {
-			map.put(entry.getKey(), new ArrayList<String>(entry.getValue()));
-		}
-		return map;
-	}
-
-	private MultivaluedMap<String, String> convertHeaders(
-			MultiValueMap<String, String> headers) {
-		MultivaluedMap<String, String> map = new MultivaluedMapImpl();
-		for (Entry<String, List<String>> entry : headers.entrySet()) {
-			map.put(entry.getKey(), entry.getValue());
+			map.put(entry.getKey(), new ArrayList<>(entry.getValue()));
 		}
 		return map;
 	}