修复推荐系统api

Change-Id: I3d35c2a6dd923c70d0eefdbe81916ec863c77df2
diff --git a/Merge/back_rhj/app/models/recall/swing_recall.py b/Merge/back_rhj/app/models/recall/swing_recall.py
index bf7fdd6..5bab5b7 100644
--- a/Merge/back_rhj/app/models/recall/swing_recall.py
+++ b/Merge/back_rhj/app/models/recall/swing_recall.py
@@ -36,7 +36,7 @@
                 WHERE type IN ('like', 'favorite', 'comment')
             """)
             interactions = cursor.fetchall()
-            
+            print(f"获取到{len(interactions)}条用户-物品交互数据")
             for user_id, post_id in interactions:
                 self.user_items[user_id].add(post_id)
                 self.item_users[post_id].add(user_id)