diff --git a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillRatingController.java b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillRatingController.java
index c25713df..b9f1e022 100644
--- a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillRatingController.java
+++ b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillRatingController.java
@@ -37,6 +37,9 @@ public class SkillRatingController extends BaseApiController {
     public ApiResponse<SkillRatingStatusResponse> getUserRating(
             @PathVariable Long skillId,
             @AuthenticationPrincipal PlatformPrincipal principal) {
+        if (principal == null) {
+            return ok("response.success.read", new SkillRatingStatusResponse((short) 0, false));
+        }
         Optional<Short> rating = skillRatingService.getUserRating(skillId, principal.userId());
         return ok(
                 "response.success.read",
diff --git a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillStarController.java b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillStarController.java
index e9ce9709..4a3e77f1 100644
--- a/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillStarController.java
+++ b/server/skillhub-app/src/main/java/com/iflytek/skillhub/controller/portal/SkillStarController.java
@@ -40,6 +40,9 @@ public class SkillStarController extends BaseApiController {
     public ApiResponse<Boolean> checkStarred(
             @PathVariable Long skillId,
             @AuthenticationPrincipal PlatformPrincipal principal) {
+        if (principal == null) {
+            return ok("response.success.read", false);
+        }
         boolean starred = skillStarService.isStarred(skillId, principal.userId());
         return ok("response.success.read", starred);
     }