diff --git a/authorization-server/src/main/java/io/bluemoon/authorizationserver/AuthorizationServerApplication.java b/authorization-server/src/main/java/io/bluemoon/authorizationserver/AuthorizationServerApplication.java
index ddfa3f3..4c336bf 100644
--- a/authorization-server/src/main/java/io/bluemoon/authorizationserver/AuthorizationServerApplication.java
+++ b/authorization-server/src/main/java/io/bluemoon/authorizationserver/AuthorizationServerApplication.java
@@ -2,8 +2,11 @@ package io.bluemoon.authorizationserver;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
 
+import java.util.Date;
+
 @SpringBootApplication
 @EnableResourceServer
 public class AuthorizationServerApplication {
diff --git a/authorization-server/src/main/java/io/bluemoon/authorizationserver/domain/social/UserArgumentResolver.java b/authorization-server/src/main/java/io/bluemoon/authorizationserver/domain/social/UserArgumentResolver.java
index 274e63f..ced2707 100644
--- a/authorization-server/src/main/java/io/bluemoon/authorizationserver/domain/social/UserArgumentResolver.java
+++ b/authorization-server/src/main/java/io/bluemoon/authorizationserver/domain/social/UserArgumentResolver.java
@@ -61,6 +61,7 @@ public class UserArgumentResolver implements HandlerMethodArgumentResolver {
 //                Map<String, String> map = (HashMap<String, String>) authentication.getUserAuthentication().getDetails();
 //                User convertUser = convertUser(String.valueOf(authentication.getAuthorities().toArray()[0]), map);
                 OAuth2AuthenticationToken authentication = (OAuth2AuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
+                // SecurityContext 사용자의 보호 및 인증된 세션
                 Map<String, Object> map = authentication.getPrincipal().getAttributes();
                 System.out.println(map.toString());
                 User convertUser = convertUser(authentication.getAuthorizedClientRegistrationId(), map);