Merge pull request #877 from liuxx001/master

fix #870

spring-cloud-alibaba-dubbo/src/main/java/com/alibaba/cloud/dubbo/metadata/repository/DubboServiceMetadataRepository.java

@@ -36,6 +36,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
+import java.util.Optional;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -49,6 +50,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.cloud.client.ServiceInstance;
 import org.springframework.cloud.client.discovery.DiscoveryClient;
+import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
 import org.springframework.cloud.commons.util.InetUtils;
 import org.springframework.context.ApplicationEvent;
 import org.springframework.context.ApplicationEventPublisher;
@@ -165,6 +167,9 @@ public class DubboServiceMetadataRepository
 	@Autowired
 	private DiscoveryClient discoveryClient;
 
+	@Autowired
+	private LoadBalancerClient loadBalancerClient;
+
 	@Autowired
 	private JSONUtils jsonUtils;
 
@@ -618,7 +623,7 @@ public class DubboServiceMetadataRepository
 	}
 
 	protected void initSubscribedDubboMetadataService(String serviceName) {
-		discoveryClient.getInstances(serviceName).stream().findAny()
+		Optional.ofNullable(loadBalancerClient.choose(serviceName))
 				.map(this::getDubboMetadataServiceURLs)
 				.ifPresent(dubboMetadataServiceURLs -> {
 					dubboMetadataServiceURLs.forEach(dubboMetadataServiceURL -> {