diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/Application.java b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/Application.java
index 814528bf3..cda11b31f 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/Application.java
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/Application.java
@@ -28,9 +28,9 @@ import org.springframework.boot.context.properties.EnableConfigurationProperties
 @SpringBootApplication
 @EnableConfigurationProperties(NacosConfigInfo.class)
 public class Application {
-    
-    public static void main(String[] args) {
-        SpringApplication.run(Application.class, args);
-    }
-    
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
 }
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/configuration/BeanConfiguration.java b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/configuration/BeanConfiguration.java
index 538475316..a635f36a0 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/configuration/BeanConfiguration.java
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/configuration/BeanConfiguration.java
@@ -27,9 +27,9 @@ import org.springframework.context.annotation.Configuration;
  */
 @Configuration
 public class BeanConfiguration {
-    
-    @Bean
-    public NacosConfigInfo nacosConfigInfo() {
-        return new NacosConfigInfo();
-    }
+
+	@Bean
+	public NacosConfigInfo nacosConfigInfo() {
+		return new NacosConfigInfo();
+	}
 }
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/BeanAutoRefreshConfigExample.java b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/BeanAutoRefreshConfigExample.java
index eed64fe42..04318fc87 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/BeanAutoRefreshConfigExample.java
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/BeanAutoRefreshConfigExample.java
@@ -33,17 +33,17 @@ import java.util.Map;
 @RestController
 @RequestMapping("/nacos/bean")
 public class BeanAutoRefreshConfigExample {
-    
-    @Autowired
-    private NacosConfigInfo nacosConfigInfo;
-    
-    @GetMapping
-    public Map<String, String> getConfigInfo() {
-        Map<String, String> result = new HashMap<>();
-        result.put("serveraddr", nacosConfigInfo.getServeraddr());
-        result.put("prefix", nacosConfigInfo.getPrefix());
-        result.put("group", nacosConfigInfo.getGroup());
-        result.put("namespace", nacosConfigInfo.getNamespace());
-        return result;
-    }
+
+	@Autowired
+	private NacosConfigInfo nacosConfigInfo;
+
+	@GetMapping
+	public Map<String, String> getConfigInfo() {
+		Map<String, String> result = new HashMap<>();
+		result.put("serveraddr", nacosConfigInfo.getServeraddr());
+		result.put("prefix", nacosConfigInfo.getPrefix());
+		result.put("group", nacosConfigInfo.getGroup());
+		result.put("namespace", nacosConfigInfo.getNamespace());
+		return result;
+	}
 }
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ConfigListenerExample.java b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ConfigListenerExample.java
index 7b3c1737d..b6a4e294f 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ConfigListenerExample.java
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ConfigListenerExample.java
@@ -16,7 +16,6 @@
 
 package com.alibaba.cloud.examples.example;
 
-
 import com.alibaba.cloud.nacos.NacosConfigManager;
 import com.alibaba.nacos.api.config.ConfigService;
 import com.alibaba.nacos.api.config.listener.Listener;
@@ -35,29 +34,30 @@ import java.util.concurrent.Executors;
  */
 @Component
 public class ConfigListenerExample {
-    
-    public static final String DATA_ID = "nacos-config-example.properties";
-    
-    public static final String GROUP = "DEFAULT_GROUP";
-    
-    @Autowired
-    private NacosConfigManager nacosConfigManager;
-    
-    @PostConstruct
-    public void init() throws NacosException {
-        ConfigService configService = nacosConfigManager.getConfigService();
-        
-        configService.addListener(DATA_ID, GROUP, new Listener() {
-            @Override
-            public Executor getExecutor() {
-                return Executors.newSingleThreadExecutor();
-            }
-            
-            @Override
-            public void receiveConfigInfo(String configInfo) {
-                System.out.println("[dataId]:[" + DATA_ID + "],Configuration changed to:" + configInfo);
-            }
-        });
-    }
-    
+
+	public static final String DATA_ID = "nacos-config-example.properties";
+
+	public static final String GROUP = "DEFAULT_GROUP";
+
+	@Autowired
+	private NacosConfigManager nacosConfigManager;
+
+	@PostConstruct
+	public void init() throws NacosException {
+		ConfigService configService = nacosConfigManager.getConfigService();
+
+		configService.addListener(DATA_ID, GROUP, new Listener() {
+			@Override
+			public Executor getExecutor() {
+				return Executors.newSingleThreadExecutor();
+			}
+
+			@Override
+			public void receiveConfigInfo(String configInfo) {
+				System.out.println("[dataId]:[" + DATA_ID + "],Configuration changed to:"
+						+ configInfo);
+			}
+		});
+	}
+
 }
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/DockingInterfaceExample.java b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/DockingInterfaceExample.java
index 5428c0c4f..7cefc6baa 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/DockingInterfaceExample.java
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/DockingInterfaceExample.java
@@ -36,93 +36,96 @@ import java.util.concurrent.Executor;
 @RestController
 @RequestMapping("nacos")
 public class DockingInterfaceExample {
-    
-    public static final String DEFAULT_GROUP = "DEFAULT_GROUP";
-    
-    @Autowired
-    private NacosConfigManager nacosConfigManager;
-    
-    /**
-     * Get configuration information
-     *
-     * @param dataId
-     * @param group
-     * @return
-     * @throws NacosException
-     */
-    @RequestMapping("getConfig")
-    public String getConfig(@RequestParam("dataId") String dataId,
-            @RequestParam(value = "group", required = false) String group) throws NacosException {
-        if (StringUtils.isEmpty(group)) {
-            group = DEFAULT_GROUP;
-        }
-        ConfigService configService = nacosConfigManager.getConfigService();
-        return configService.getConfig(dataId, group, 2000);
-    }
-    
-    /**
-     * Publish configuration
-     *
-     * @param dataId
-     * @param group
-     * @param content
-     * @return
-     * @throws NacosException
-     */
-    @RequestMapping("publishConfig")
-    public boolean publishConfig(@RequestParam("dataId") String dataId,
-            @RequestParam(value = "group", required = false) String group, @RequestParam("content") String content)
-            throws NacosException {
-        if (StringUtils.isEmpty(group)) {
-            group = DEFAULT_GROUP;
-        }
-        ConfigService configService = nacosConfigManager.getConfigService();
-        return configService.publishConfig(dataId, group, content);
-    }
-    
-    /**
-     * Delete configuration
-     *
-     * @param dataId
-     * @param group
-     * @return
-     * @throws NacosException
-     */
-    @RequestMapping("remoteConfig")
-    public boolean remoteConfig(@RequestParam("dataId") String dataId,
-            @RequestParam(value = "group", required = false) String group) throws NacosException {
-        if (StringUtils.isEmpty(group)) {
-            group = DEFAULT_GROUP;
-        }
-        ConfigService configService = nacosConfigManager.getConfigService();
-        return configService.removeConfig(dataId, group);
-    }
-    
-    /**
-     * Add listener configuration information
-     *
-     * @param dataId
-     * @param group
-     * @throws NacosException
-     */
-    @RequestMapping("listener")
-    public String listenerConfig(@RequestParam("dataId") String dataId,
-            @RequestParam(value = "group", required = false) String group) throws NacosException {
-        if (StringUtils.isEmpty(group)) {
-            group = DEFAULT_GROUP;
-        }
-        ConfigService configService = nacosConfigManager.getConfigService();
-        configService.addListener(dataId, group, new Listener() {
-            @Override
-            public Executor getExecutor() {
-                return null;
-            }
-            
-            @Override
-            public void receiveConfigInfo(String configInfo) {
-                System.out.println("[Listen for configuration changes]:" + configInfo);
-            }
-        });
-        return "Add Lister successfully!";
-    }
+
+	public static final String DEFAULT_GROUP = "DEFAULT_GROUP";
+
+	@Autowired
+	private NacosConfigManager nacosConfigManager;
+
+	/**
+	 * Get configuration information
+	 *
+	 * @param dataId
+	 * @param group
+	 * @return
+	 * @throws NacosException
+	 */
+	@RequestMapping("getConfig")
+	public String getConfig(@RequestParam("dataId") String dataId,
+			@RequestParam(value = "group", required = false) String group)
+			throws NacosException {
+		if (StringUtils.isEmpty(group)) {
+			group = DEFAULT_GROUP;
+		}
+		ConfigService configService = nacosConfigManager.getConfigService();
+		return configService.getConfig(dataId, group, 2000);
+	}
+
+	/**
+	 * Publish configuration
+	 *
+	 * @param dataId
+	 * @param group
+	 * @param content
+	 * @return
+	 * @throws NacosException
+	 */
+	@RequestMapping("publishConfig")
+	public boolean publishConfig(@RequestParam("dataId") String dataId,
+			@RequestParam(value = "group", required = false) String group,
+			@RequestParam("content") String content) throws NacosException {
+		if (StringUtils.isEmpty(group)) {
+			group = DEFAULT_GROUP;
+		}
+		ConfigService configService = nacosConfigManager.getConfigService();
+		return configService.publishConfig(dataId, group, content);
+	}
+
+	/**
+	 * Delete configuration
+	 *
+	 * @param dataId
+	 * @param group
+	 * @return
+	 * @throws NacosException
+	 */
+	@RequestMapping("remoteConfig")
+	public boolean remoteConfig(@RequestParam("dataId") String dataId,
+			@RequestParam(value = "group", required = false) String group)
+			throws NacosException {
+		if (StringUtils.isEmpty(group)) {
+			group = DEFAULT_GROUP;
+		}
+		ConfigService configService = nacosConfigManager.getConfigService();
+		return configService.removeConfig(dataId, group);
+	}
+
+	/**
+	 * Add listener configuration information
+	 *
+	 * @param dataId
+	 * @param group
+	 * @throws NacosException
+	 */
+	@RequestMapping("listener")
+	public String listenerConfig(@RequestParam("dataId") String dataId,
+			@RequestParam(value = "group", required = false) String group)
+			throws NacosException {
+		if (StringUtils.isEmpty(group)) {
+			group = DEFAULT_GROUP;
+		}
+		ConfigService configService = nacosConfigManager.getConfigService();
+		configService.addListener(dataId, group, new Listener() {
+			@Override
+			public Executor getExecutor() {
+				return null;
+			}
+
+			@Override
+			public void receiveConfigInfo(String configInfo) {
+				System.out.println("[Listen for configuration changes]:" + configInfo);
+			}
+		});
+		return "Add Lister successfully!";
+	}
 }
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ValueAnnotationExample.java b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ValueAnnotationExample.java
index 821aff30f..32c2687a3 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ValueAnnotationExample.java
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/example/ValueAnnotationExample.java
@@ -34,26 +34,26 @@ import java.util.Map;
 @RequestMapping("/nacos/annotation")
 @RefreshScope
 public class ValueAnnotationExample {
-    
-    @Value("${spring.cloud.nacos.config.serveraddr:}")
-    private String serveraddr;
-    
-    @Value("${spring.cloud.nacos.config.prefix:}")
-    private String prefix;
-    
-    @Value("${spring.cloud.nacos.config.group:}")
-    private String group;
-    
-    @Value("${spring.cloud.nacos.config.namespace:}")
-    private String namespace;
-    
-    @GetMapping
-    public Map<String, String> getConfigInfo() {
-        Map<String, String> result = new HashMap<>();
-        result.put("serveraddr", serveraddr);
-        result.put("prefix", prefix);
-        result.put("group", group);
-        result.put("namespace", namespace);
-        return result;
-    }
+
+	@Value("${spring.cloud.nacos.config.serveraddr:}")
+	private String serveraddr;
+
+	@Value("${spring.cloud.nacos.config.prefix:}")
+	private String prefix;
+
+	@Value("${spring.cloud.nacos.config.group:}")
+	private String group;
+
+	@Value("${spring.cloud.nacos.config.namespace:}")
+	private String namespace;
+
+	@GetMapping
+	public Map<String, String> getConfigInfo() {
+		Map<String, String> result = new HashMap<>();
+		result.put("serveraddr", serveraddr);
+		result.put("prefix", prefix);
+		result.put("group", group);
+		result.put("namespace", namespace);
+		return result;
+	}
 }
diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/model/NacosConfigInfo.java b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/model/NacosConfigInfo.java
index cacfd0307..b77458166 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/model/NacosConfigInfo.java
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/model/NacosConfigInfo.java
@@ -22,57 +22,56 @@ import org.springframework.cloud.context.config.annotation.RefreshScope;
 @ConfigurationProperties(prefix = "spring.cloud.nacos.config")
 @RefreshScope
 public class NacosConfigInfo {
-    
-    /**
-     * Nacos server address
-     */
-    private String serveraddr;
-    
-    /**
-     * Data Id prefix
-     */
-    private String prefix;
-    
-    /**
-     * Nacos group
-     */
-    private String group;
-    
-    /**
-     * Nacos namespace
-     */
-    private String namespace;
-    
-    public String getServeraddr() {
-        return serveraddr;
-    }
-    
-    public void setServeraddr(String serveraddr) {
-        this.serveraddr = serveraddr;
-    }
-    
-    public String getPrefix() {
-        return prefix;
-    }
-    
-    public void setPrefix(String prefix) {
-        this.prefix = prefix;
-    }
-    
-    public String getGroup() {
-        return group;
-    }
-    
-    public void setGroup(String group) {
-        this.group = group;
-    }
-    
-    public String getNamespace() {
-        return namespace;
-    }
-    
-    public void setNamespace(String namespace) {
-        this.namespace = namespace;
-    }
-}
 
+	/**
+	 * Nacos server address
+	 */
+	private String serveraddr;
+
+	/**
+	 * Data Id prefix
+	 */
+	private String prefix;
+
+	/**
+	 * Nacos group
+	 */
+	private String group;
+
+	/**
+	 * Nacos namespace
+	 */
+	private String namespace;
+
+	public String getServeraddr() {
+		return serveraddr;
+	}
+
+	public void setServeraddr(String serveraddr) {
+		this.serveraddr = serveraddr;
+	}
+
+	public String getPrefix() {
+		return prefix;
+	}
+
+	public void setPrefix(String prefix) {
+		this.prefix = prefix;
+	}
+
+	public String getGroup() {
+		return group;
+	}
+
+	public void setGroup(String group) {
+		this.group = group;
+	}
+
+	public String getNamespace() {
+		return namespace;
+	}
+
+	public void setNamespace(String namespace) {
+		this.namespace = namespace;
+	}
+}