diff --git a/samples/security/src/main/java/com/supwisdom/leaveschool/app/security/core/userdetails/MyUserDetailsService.java b/samples/security/src/main/java/com/supwisdom/leaveschool/app/security/core/userdetails/MyUserDetailsService.java
index b4ea3d0..9ece847 100644
--- a/samples/security/src/main/java/com/supwisdom/leaveschool/app/security/core/userdetails/MyUserDetailsService.java
+++ b/samples/security/src/main/java/com/supwisdom/leaveschool/app/security/core/userdetails/MyUserDetailsService.java
@@ -28,6 +28,7 @@
     
     logger.debug("MyUserDetailsService.loadUserByUsername({})", username);
     
+    // TODO: 从数据库获取
     List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
     authorities.add(new SimpleGrantedAuthority("ROLE_USER"));