diff --git a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties
index 4d880443..c9c1c9f6 100644
--- a/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties
+++ b/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/resources/bootstrap.properties
@@ -18,18 +18,18 @@ spring.cloud.nacos.password=nacos
 #spring.cloud.nacos.config.shared-data-ids=common.properties,base-common.properties
 
 ## recommended.
-spring.cloud.nacos.config.shared-configs[0].data-id= test2.yaml
+spring.cloud.nacos.config.shared-configs[0].data-id=test2.yaml
 spring.cloud.nacos.config.shared-configs[0].refresh=true
 ## the default value is 'DEFAULT_GROUP' , if not specified.
-spring.cloud.nacos.config.shared-configs[0].group= GROUP_APP1
+spring.cloud.nacos.config.shared-configs[0].group=GROUP_APP1
 
 ## not recommended.
 #spring.cloud.nacos.config.ext-config[0]=ext.properties
 ## recommended.
-spring.cloud.nacos.config.extension-configs[0].data-id= extension1.properties
+spring.cloud.nacos.config.extension-configs[0].data-id=extension1.properties
 spring.cloud.nacos.config.extension-configs[0].refresh=true
-spring.cloud.nacos.config.extension-configs[1].data-id= test1.yml
-spring.cloud.nacos.config.extension-configs[1].refresh= true
+spring.cloud.nacos.config.extension-configs[1].data-id=test1.yml
+spring.cloud.nacos.config.extension-configs[1].refresh=true