diff --git a/src/main/java/io/spring/api/UsersApi.java b/src/main/java/io/spring/api/UsersApi.java
index bcb7dd7..e05fadb 100644
--- a/src/main/java/io/spring/api/UsersApi.java
+++ b/src/main/java/io/spring/api/UsersApi.java
@@ -2,7 +2,6 @@ package io.spring.api;
 
 import com.fasterxml.jackson.annotation.JsonRootName;
 import io.spring.api.exception.InvalidRequestException;
-import io.spring.application.user.UserData;
 import io.spring.application.user.UserQueryService;
 import io.spring.application.user.UserWithToken;
 import io.spring.core.user.EncryptService;
@@ -21,7 +20,6 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import javax.validation.Valid;
-
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
diff --git a/src/main/java/io/spring/application/article/ArticleData.java b/src/main/java/io/spring/application/article/ArticleData.java
index a574836..94ece20 100644
--- a/src/main/java/io/spring/application/article/ArticleData.java
+++ b/src/main/java/io/spring/application/article/ArticleData.java
@@ -1,7 +1,6 @@
 package io.spring.application.article;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.annotation.JsonRootName;
 import io.spring.application.profile.ProfileData;
 import lombok.AllArgsConstructor;
 import lombok.Data;
diff --git a/src/main/java/io/spring/application/profile/UserRelationshipQueryService.java b/src/main/java/io/spring/application/profile/UserRelationshipQueryService.java
index c533880..8d42c82 100644
--- a/src/main/java/io/spring/application/profile/UserRelationshipQueryService.java
+++ b/src/main/java/io/spring/application/profile/UserRelationshipQueryService.java
@@ -1,6 +1,5 @@
 package io.spring.application.profile;
 
-import io.spring.application.article.ArticleData;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Component;
diff --git a/src/main/java/io/spring/application/user/UserData.java b/src/main/java/io/spring/application/user/UserData.java
index a3f863a..b8a2e67 100644
--- a/src/main/java/io/spring/application/user/UserData.java
+++ b/src/main/java/io/spring/application/user/UserData.java
@@ -1,6 +1,5 @@
 package io.spring.application.user;
 
-import com.fasterxml.jackson.annotation.JsonRootName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
diff --git a/src/main/java/io/spring/application/user/UserQueryService.java b/src/main/java/io/spring/application/user/UserQueryService.java
index 70be101..227f79c 100644
--- a/src/main/java/io/spring/application/user/UserQueryService.java
+++ b/src/main/java/io/spring/application/user/UserQueryService.java
@@ -1,8 +1,6 @@
 package io.spring.application.user;
 
-import com.fasterxml.jackson.annotation.JsonRootName;
 import io.spring.application.JwtService;
-import lombok.Getter;
 import org.springframework.stereotype.Service;
 
 @Service
diff --git a/src/main/java/io/spring/application/user/UserReadService.java b/src/main/java/io/spring/application/user/UserReadService.java
index a16400e..08998b9 100644
--- a/src/main/java/io/spring/application/user/UserReadService.java
+++ b/src/main/java/io/spring/application/user/UserReadService.java
@@ -1,6 +1,5 @@
 package io.spring.application.user;
 
-import io.spring.application.profile.ProfileData;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Component;
diff --git a/src/test/java/io/spring/application/tag/TagsQueryServiceTest.java b/src/test/java/io/spring/application/tag/TagsQueryServiceTest.java
index 1e6c2c2..1b47384 100644
--- a/src/test/java/io/spring/application/tag/TagsQueryServiceTest.java
+++ b/src/test/java/io/spring/application/tag/TagsQueryServiceTest.java
@@ -11,7 +11,7 @@ import org.springframework.context.annotation.Import;
 import org.springframework.test.context.junit4.SpringRunner;
 
 import static org.hamcrest.CoreMatchers.is;
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertThat;
 
 @RunWith(SpringRunner.class)
 @MybatisTest