diff --git a/spring-cloud-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/discovery/NacosDiscoveryClient.java b/spring-cloud-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/discovery/NacosDiscoveryClient.java
index 941a23197..8e11be7a2 100644
--- a/spring-cloud-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/discovery/NacosDiscoveryClient.java
+++ b/spring-cloud-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/discovery/NacosDiscoveryClient.java
@@ -16,21 +16,20 @@
 
 package com.alibaba.cloud.nacos.discovery;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
+import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
+import com.alibaba.cloud.nacos.NacosServiceInstance;
+import com.alibaba.nacos.api.naming.pojo.Instance;
+import com.alibaba.nacos.api.naming.pojo.ListView;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.cloud.client.ServiceInstance;
 import org.springframework.cloud.client.discovery.DiscoveryClient;
 
-import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
-import com.alibaba.cloud.nacos.NacosServiceInstance;
-import com.alibaba.nacos.api.naming.pojo.Instance;
-import com.alibaba.nacos.api.naming.pojo.ListView;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 /**
  * @author xiaojing
@@ -38,75 +37,73 @@ import com.alibaba.nacos.api.naming.pojo.ListView;
  */
 public class NacosDiscoveryClient implements DiscoveryClient {
 
-	private static final Logger log = LoggerFactory.getLogger(NacosDiscoveryClient.class);
-	public static final String DESCRIPTION = "Spring Cloud Nacos Discovery Client";
-
-	private NacosDiscoveryProperties discoveryProperties;
-
-	public NacosDiscoveryClient(NacosDiscoveryProperties discoveryProperties) {
-		this.discoveryProperties = discoveryProperties;
-	}
-
-	@Override
-	public String description() {
-		return DESCRIPTION;
-	}
-
-	@Override
-	public List<ServiceInstance> getInstances(String serviceId) {
-		try {
-			List<Instance> instances = discoveryProperties.namingServiceInstance()
-					.selectInstances(serviceId, true);
-			return hostToServiceInstanceList(instances, serviceId);
-		}
-		catch (Exception e) {
-			throw new RuntimeException(
-					"Can not get hosts from nacos server. serviceId: " + serviceId, e);
-		}
-	}
-
-	private static ServiceInstance hostToServiceInstance(Instance instance,
-			String serviceId) {
-		NacosServiceInstance nacosServiceInstance = new NacosServiceInstance();
-		nacosServiceInstance.setHost(instance.getIp());
-		nacosServiceInstance.setPort(instance.getPort());
-		nacosServiceInstance.setServiceId(serviceId);
-
-		Map<String, String> metadata = new HashMap<>();
-		metadata.put("nacos.instanceId", instance.getInstanceId());
-		metadata.put("nacos.weight", instance.getWeight() + "");
-		metadata.put("nacos.healthy", instance.isHealthy() + "");
-		metadata.put("nacos.cluster", instance.getClusterName() + "");
-		metadata.putAll(instance.getMetadata());
-		nacosServiceInstance.setMetadata(metadata);
-
-		if (metadata.containsKey("secure")) {
-			boolean secure = Boolean.parseBoolean(metadata.get("secure"));
-			nacosServiceInstance.setSecure(secure);
-		}
-		return nacosServiceInstance;
-	}
-
-	private static List<ServiceInstance> hostToServiceInstanceList(
-			List<Instance> instances, String serviceId) {
-		List<ServiceInstance> result = new ArrayList<>(instances.size());
-		for (Instance instance : instances) {
-			result.add(hostToServiceInstance(instance, serviceId));
-		}
-		return result;
-	}
-
-	@Override
-	public List<String> getServices() {
-
-		try {
-			ListView<String> services = discoveryProperties.namingServiceInstance()
-					.getServicesOfServer(1, Integer.MAX_VALUE);
-			return services.getData();
-		}
-		catch (Exception e) {
-			log.error("get service name from nacos server fail,", e);
-			return Collections.emptyList();
-		}
-	}
+    private static final Logger log = LoggerFactory.getLogger(NacosDiscoveryClient.class);
+    public static final String DESCRIPTION = "Spring Cloud Nacos Discovery Client";
+
+    private NacosDiscoveryProperties discoveryProperties;
+
+    public NacosDiscoveryClient(NacosDiscoveryProperties discoveryProperties) {
+        this.discoveryProperties = discoveryProperties;
+    }
+
+    @Override
+    public String description() {
+        return DESCRIPTION;
+    }
+
+    @Override
+    public List<ServiceInstance> getInstances(String serviceId) {
+        try {
+            List<Instance> instances = discoveryProperties.namingServiceInstance()
+                    .selectInstances(serviceId, true);
+            return hostToServiceInstanceList(instances, serviceId);
+        } catch (Exception e) {
+            throw new RuntimeException(
+                    "Can not get hosts from nacos server. serviceId: " + serviceId, e);
+        }
+    }
+
+    public static ServiceInstance hostToServiceInstance(Instance instance,
+                                                        String serviceId) {
+        NacosServiceInstance nacosServiceInstance = new NacosServiceInstance();
+        nacosServiceInstance.setHost(instance.getIp());
+        nacosServiceInstance.setPort(instance.getPort());
+        nacosServiceInstance.setServiceId(serviceId);
+
+        Map<String, String> metadata = new HashMap<>();
+        metadata.put("nacos.instanceId", instance.getInstanceId());
+        metadata.put("nacos.weight", instance.getWeight() + "");
+        metadata.put("nacos.healthy", instance.isHealthy() + "");
+        metadata.put("nacos.cluster", instance.getClusterName() + "");
+        metadata.putAll(instance.getMetadata());
+        nacosServiceInstance.setMetadata(metadata);
+
+        if (metadata.containsKey("secure")) {
+            boolean secure = Boolean.parseBoolean(metadata.get("secure"));
+            nacosServiceInstance.setSecure(secure);
+        }
+        return nacosServiceInstance;
+    }
+
+    public static List<ServiceInstance> hostToServiceInstanceList(
+            List<Instance> instances, String serviceId) {
+        List<ServiceInstance> result = new ArrayList<>(instances.size());
+        for (Instance instance : instances) {
+            result.add(hostToServiceInstance(instance, serviceId));
+        }
+        return result;
+    }
+
+    @Override
+    public List<String> getServices() {
+
+        try {
+            ListView<String> services = discoveryProperties.namingServiceInstance()
+                    .getServicesOfServer(1, Integer.MAX_VALUE);
+            return services.getData();
+        } catch (Exception e) {
+            log.error("get service name from nacos server fail,", e);
+            return Collections.emptyList();
+        }
+    }
 }