diff --git a/iot-common/iot-common-doc/src/main/java/cc/iotkit/swagger/config/SwaggerAutoConfiguration.java b/iot-common/iot-common-doc/src/main/java/cc/iotkit/swagger/config/SwaggerAutoConfiguration.java
index 86dff023..ec9e87ce 100644
--- a/iot-common/iot-common-doc/src/main/java/cc/iotkit/swagger/config/SwaggerAutoConfiguration.java
+++ b/iot-common/iot-common-doc/src/main/java/cc/iotkit/swagger/config/SwaggerAutoConfiguration.java
@@ -9,6 +9,8 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.HttpMethod;
+import springfox.documentation.builders.*;
+import springfox.documentation.service.*;
 import springfox.documentation.spi.DocumentationType;
 import springfox.documentation.spring.web.plugins.ApiSelectorBuilder;
 import springfox.documentation.spring.web.plugins.Docket;