diff --git a/api-boot-samples/api-boot-sample-security-oauth-jwt/src/main/java/org/minbox/framework/api/boot/sample/PhoneCodeOauthTokenGranter.java b/api-boot-samples/api-boot-sample-security-oauth-jwt/src/main/java/org/minbox/framework/api/boot/sample/PhoneCodeOauthTokenGranter.java
index 0699c1e8829bf9bb0003abcfbedb975fdd2cda66..daceaf0034eade5908cfc2e2f4c0b9a590e32a1b 100644
--- a/api-boot-samples/api-boot-sample-security-oauth-jwt/src/main/java/org/minbox/framework/api/boot/sample/PhoneCodeOauthTokenGranter.java
+++ b/api-boot-samples/api-boot-sample-security-oauth-jwt/src/main/java/org/minbox/framework/api/boot/sample/PhoneCodeOauthTokenGranter.java
@@ -45,6 +45,7 @@ public class PhoneCodeOauthTokenGranter implements ApiBootOauthTokenGranter {
      * logger instance
      */
     static Logger logger = LoggerFactory.getLogger(PhoneCodeOauthTokenGranter.class);
+
     /**
      * 获取Token时使用grant_type=phone_code授权方式
      */