Code optimization

spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md

@@ -80,7 +80,7 @@
 #### 验证自动注入
 在浏览器地址栏输入 `http://127.0.0.1:18084/nacos/bean`，并点击调转，可以看到成功从 Nacos Config Server 中获取了数据。
 
-![](https://tva1.sinaimg.cn/large/e6c9d24ely1h29htdsg18j20jc0aigma.jpg)
+![get](https://tva1.sinaimg.cn/large/e6c9d24ely1h29htdsg18j20jc0aigma.jpg)
 
 #### 验证动态刷新
 1. 执行如下命令，修改 Nacos Server 端的配置数据
@@ -89,7 +89,7 @@
 
 2. 在浏览器地址栏输入 `http://127.0.0.1:18084/nacos/bean`，并点击调转，可以看到应用从 Nacos Server 中获取了最新的数据，group 变成了 DEFAULT_GROUP。
 
-![](https://tva1.sinaimg.cn/large/e6c9d24ely1h29hzf0ic4j20ks0b4mxy.jpg)
+![refresh](https://tva1.sinaimg.cn/large/e6c9d24ely1h29hzf0ic4j20ks0b4mxy.jpg)
 
 
 ## 原理

spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme.md

@@ -82,7 +82,7 @@ Before we start the demo, let's learn how to connect Nacos Config to a Spring Cl
 #### Automatic Injection
 Enter `http://127.0.0.1:18084/nacos/bean` in the browser address bar and click Go to, we can see the data successfully obtained from Nacos Config Server.
 
-![](https://tva1.sinaimg.cn/large/e6c9d24ely1h29htdsg18j20jc0aigma.jpg)
+![get](https://tva1.sinaimg.cn/large/e6c9d24ely1h29htdsg18j20jc0aigma.jpg)
 
 #### Dynamic Refresh
 1. Run the following command to modify the configuration data on the Nacos Server side.
@@ -91,7 +91,7 @@ Enter `http://127.0.0.1:18084/nacos/bean` in the browser address bar and click G
 
 2. Enter `http://127.0.0.1:18084/nacos/bean` in the address bar of the browser, and click Flip, you can see that the application has obtained the latest data from Nacos Server, and the group has become DEFAULT_GROUP.
 
-![](https://tva1.sinaimg.cn/large/e6c9d24ely1h29hzf0ic4j20ks0b4mxy.jpg)
+![refresh](https://tva1.sinaimg.cn/large/e6c9d24ely1h29hzf0ic4j20ks0b4mxy.jpg)
 
 
 ## Principle

spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ConfigListenerExample.java

@@ -28,6 +28,7 @@ import com.alibaba.nacos.api.exception.NacosException;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 

spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/DockingInterfaceExample.java

@@ -27,6 +27,7 @@ import com.alibaba.nacos.api.exception.NacosException;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;