diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisAutoServiceRegistration.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisAutoServiceRegistration.java
index a04a10bcb..8c3bdb4ad 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisAutoServiceRegistration.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisAutoServiceRegistration.java
@@ -21,6 +21,7 @@ import com.tencent.cloud.polaris.registry.graceful.AbstractGracefulServiceRegist
 import com.tencent.cloud.polaris.registry.graceful.GracefulServiceRegistrationProperties;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import org.springframework.cloud.client.serviceregistry.Registration;
 import org.springframework.cloud.client.serviceregistry.ServiceRegistry;
 import org.springframework.util.StringUtils;
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
index a02f0b190..b9da05fca 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
@@ -18,6 +18,9 @@
 
 package com.tencent.cloud.polaris.registry;
 
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
 import com.tencent.cloud.common.metadata.StaticMetadataManager;
 import com.tencent.cloud.polaris.PolarisDiscoveryProperties;
 import com.tencent.cloud.polaris.discovery.PolarisDiscoveryHandler;
@@ -33,13 +36,11 @@ import com.tencent.polaris.client.util.NamedThreadFactory;
 import org.apache.commons.lang.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import org.springframework.beans.BeanUtils;
 import org.springframework.cloud.client.serviceregistry.Registration;
 import org.springframework.cloud.client.serviceregistry.ServiceRegistry;
 
-import java.util.concurrent.Executors;
-import java.util.concurrent.ScheduledExecutorService;
-
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static org.springframework.util.ReflectionUtils.rethrowRuntimeException;
 
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/AbstractGracefulServiceRegistration.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/AbstractGracefulServiceRegistration.java
index 22541b02c..7cbb62aa7 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/AbstractGracefulServiceRegistration.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/AbstractGracefulServiceRegistration.java
@@ -1,5 +1,10 @@
 package com.tencent.cloud.polaris.registry.graceful;
 
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import javax.annotation.PreDestroy;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.springframework.beans.BeansException;
@@ -15,11 +20,6 @@ import org.springframework.context.ApplicationContextAware;
 import org.springframework.context.ApplicationListener;
 import org.springframework.core.env.Environment;
 
-import javax.annotation.PreDestroy;
-import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.concurrent.atomic.AtomicInteger;
-
-
 /**
  * Lifecycle methods that may be useful and common to {@link ServiceRegistry}
  * implementations.
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationAutoConfiguration.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationAutoConfiguration.java
index 7a1dfcc75..c1d588691 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationAutoConfiguration.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationAutoConfiguration.java
@@ -1,12 +1,12 @@
 package com.tencent.cloud.polaris.registry.graceful;
 
+import javax.annotation.PostConstruct;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
 
-import javax.annotation.PostConstruct;
-
 /**
  * @author Spencer Gibb
  */
@@ -29,4 +29,4 @@ public class GracefulServiceRegistrationAutoConfiguration {
 		}
 	}
 
-}
\ No newline at end of file
+}
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationProperties.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationProperties.java
index 07258130a..dd72864b8 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationProperties.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationProperties.java
@@ -45,4 +45,4 @@ public class GracefulServiceRegistrationProperties {
 		this.failFast = failFast;
 	}
 
-}
\ No newline at end of file
+}
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java
index dd7498e28..baa3e2587 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java
@@ -35,7 +35,7 @@ public class DiscoveryCallerService {
 
 	public static void main(String[] args) {
 		SpringApplication app = new SpringApplication(DiscoveryCallerService.class);
-		app.addListeners(new MyListenery());
+		app.addListeners(new SpringEventOrderListener());
 		app.run(args);
 	}
 
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/MyListenery.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/SpringEventOrderListener.java
similarity index 77%
rename from spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/MyListenery.java
rename to spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/SpringEventOrderListener.java
index 1859266bd..fc10f5489 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/MyListenery.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/SpringEventOrderListener.java
@@ -6,19 +6,10 @@ import org.springframework.boot.web.servlet.context.ServletWebServerInitializedE
 import org.springframework.context.ApplicationEvent;
 import org.springframework.context.ApplicationListener;
 
-public class MyListenery implements ApplicationListener {
+public class SpringEventOrderListener implements ApplicationListener {
     
     @Override
     public void onApplicationEvent(ApplicationEvent event) {
-//        ApplicationStartingEvent//启动开始的时候执行的事件
-//        ApplicationEnvironmentPreparedEvent//上下文创建之前运行的事件
-//        ApplicationContextInitializedEvent//
-//        ApplicationPreparedEvent//上下文创建完成，注入的bean还没加载完成
-//        ContextRefreshedEvent//上下文刷新
-//        ServletWebServerInitializedEvent//web服务器初始化
-//        ApplicationStartedEvent//
-//        ApplicationReadyEvent//启动成功
-//        ApplicationFailedEvent//在启动Spring发生异常时触发
         switch (event.getClass().getSimpleName()){
             case "ApplicationStartingEvent":
                 System.out.println("事件ApplicationStartingEvent");