diff --git a/src/main/java/top/suyiiyii/sims/controller/RecordController.java b/src/main/java/top/suyiiyii/sims/controller/RecordController.java
index cff3af0..adaf094 100644
--- a/src/main/java/top/suyiiyii/sims/controller/RecordController.java
+++ b/src/main/java/top/suyiiyii/sims/controller/RecordController.java
@@ -173,8 +173,8 @@ RecordController {
         }
         List<Integer> idByCategoryName = categoryService.getIdByCategoryName(categoryName);
         for (Integer i : idByCategoryName) {
-            Integer sid = recordService.getSidByCategoryId(i);
-            studentIds.add(sid);
+            List<Integer> sid = recordService.getSidByCategoryId(i);
+            studentIds.addAll(sid);
         }
         List<Record> records=new ArrayList<>();
         HashSet<Integer> studentIds1= new HashSet<>(studentIds);
@@ -214,9 +214,9 @@ RecordController {
         }
         List<Integer> idByCategoryName = categoryService.getIdByCategoryName(categoryName);
         for (Integer i : idByCategoryName) {
-            Integer sid = recordService.getSidByCategoryId(i);
+            List<Integer> sid = recordService.getSidByCategoryId(i);
             if(sid!=null) {
-                studentIds.add(sid);
+                studentIds.addAll(sid);
             }
         }
         List<Record> records=new ArrayList<>();
diff --git a/src/main/java/top/suyiiyii/sims/controller/UserController.java b/src/main/java/top/suyiiyii/sims/controller/UserController.java
index ed3b62a..8348da7 100644
--- a/src/main/java/top/suyiiyii/sims/controller/UserController.java
+++ b/src/main/java/top/suyiiyii/sims/controller/UserController.java
@@ -4,7 +4,6 @@ import cn.hutool.core.util.StrUtil;
 import io.swagger.v3.oas.annotations.Operation;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpSession;
-import jakarta.validation.constraints.Max;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
diff --git a/src/main/java/top/suyiiyii/sims/mapper/RecordMapper.java b/src/main/java/top/suyiiyii/sims/mapper/RecordMapper.java
index 2ccd16c..a35517c 100644
--- a/src/main/java/top/suyiiyii/sims/mapper/RecordMapper.java
+++ b/src/main/java/top/suyiiyii/sims/mapper/RecordMapper.java
@@ -76,7 +76,7 @@ public interface RecordMapper {
 
 
 @Select("select student_id from record where category_id = #{i}")
-    Integer getSidByCategoryId(Integer i);
+    List<Integer> getSidByCategoryId(Integer i);
 @Select("SELECT * FROM record WHERE student_id = #{sid} LIMIT #{page},#{size}")
     List<Record> getRecordsById(int page, int size, Integer sid);
 @Select("SELECT id FROM record WHERE id = #{id}")
diff --git a/src/main/java/top/suyiiyii/sims/service/RecordService.java b/src/main/java/top/suyiiyii/sims/service/RecordService.java
index 69edbd1..3b525b2 100644
--- a/src/main/java/top/suyiiyii/sims/service/RecordService.java
+++ b/src/main/java/top/suyiiyii/sims/service/RecordService.java
@@ -74,7 +74,7 @@ public class RecordService {
 
 
 
-    public  Integer getSidByCategoryId(Integer i) {
+    public  List<Integer> getSidByCategoryId(Integer i) {
         return recordMapper.getSidByCategoryId(i);
     }