diff --git a/spring-cloud-tencent-examples/tsf-example/provider-demo/src/main/java/com/tencent/cloud/tsf/demo/provider/config/ProviderNameConfigChangeListener.java b/spring-cloud-tencent-examples/tsf-example/provider-demo/src/main/java/com/tencent/cloud/tsf/demo/provider/config/ProviderNameConfigChangeListener.java
index d217167fe..1493c9105 100644
--- a/spring-cloud-tencent-examples/tsf-example/provider-demo/src/main/java/com/tencent/cloud/tsf/demo/provider/config/ProviderNameConfigChangeListener.java
+++ b/spring-cloud-tencent-examples/tsf-example/provider-demo/src/main/java/com/tencent/cloud/tsf/demo/provider/config/ProviderNameConfigChangeListener.java
@@ -1,23 +1,40 @@
-//package com.tencent.cloud.tsf.demo.provider.config;
-//
-//import com.tencent.tsf.consul.config.watch.ConfigChangeCallback;
-//import com.tencent.tsf.consul.config.watch.ConfigChangeListener;
-//import com.tencent.tsf.consul.config.watch.ConfigProperty;
-//import org.slf4j.Logger;
-//import org.slf4j.LoggerFactory;
-//
-//import org.springframework.stereotype.Component;
-//
-//@Component
-//@ConfigChangeListener(prefix = "provider.config", value = {"name"})
-//public class ProviderNameConfigChangeListener implements ConfigChangeCallback {
-//
-//	private static final Logger log = LoggerFactory.getLogger(ProviderNameConfigChangeListener.class);
-//
-//	@Override
-//	public void callback(ConfigProperty lastConfigProperty, ConfigProperty newConfigProperty) {
-//		log.info("[TSF SDK] Configuration Change Listener: key: {}, old value: {}, new value: {}",
-//				lastConfigProperty.getKey(), lastConfigProperty.getValue(), newConfigProperty.getValue());
-//	}
-//
-//}
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed
+ * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package com.tencent.cloud.tsf.demo.provider.config;
+
+import com.tencent.tsf.consul.config.watch.ConfigChangeCallback;
+import com.tencent.tsf.consul.config.watch.ConfigChangeListener;
+import com.tencent.tsf.consul.config.watch.ConfigProperty;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.springframework.stereotype.Component;
+
+@Component
+@ConfigChangeListener(prefix = "provider.config", value = {"name"})
+public class ProviderNameConfigChangeListener implements ConfigChangeCallback {
+
+	private static final Logger log = LoggerFactory.getLogger(ProviderNameConfigChangeListener.class);
+
+	@Override
+	public void callback(ConfigProperty lastConfigProperty, ConfigProperty newConfigProperty) {
+		log.info("[TSF SDK] Configuration Change Listener: key: {}, old value: {}, new value: {}",
+				lastConfigProperty.getKey(), lastConfigProperty.getValue(), newConfigProperty.getValue());
+	}
+
+}