diff --git a/src/main/java/com/sztzjy/financial_bigdata/entity/tea_dto/TeaExamManageDto.java b/src/main/java/com/sztzjy/financial_bigdata/entity/tea_dto/TeaExamManageDto.java
index ffa5bd5..34e0fc5 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/entity/tea_dto/TeaExamManageDto.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/entity/tea_dto/TeaExamManageDto.java
@@ -3,6 +3,8 @@ package com.sztzjy.financial_bigdata.entity.tea_dto;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.springframework.lang.Nullable;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.math.BigDecimal;
@@ -14,6 +16,7 @@ import java.util.Date;
  */
 @Data
 @NoArgsConstructor
+@ToString
 public class TeaExamManageDto {
     @ApiModelProperty("考试管理ID")
     private String examManageId;
@@ -81,5 +84,6 @@ public class TeaExamManageDto {
     @ApiModelProperty("判断题答案(id, answer)")
     private String judgeAnswer;
 
+    @Nullable
     private MultipartFile file;
 }
diff --git a/src/main/java/com/sztzjy/financial_bigdata/mapper/StuStudentExamMapper.java b/src/main/java/com/sztzjy/financial_bigdata/mapper/StuStudentExamMapper.java
index c6f83f0..e9a2876 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/mapper/StuStudentExamMapper.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/mapper/StuStudentExamMapper.java
@@ -44,6 +44,6 @@ public interface StuStudentExamMapper {
 
     int selectLastExamRank(@Param("userId") String userId);
 
-    @Select("SELECT se.total_score,te.exam_name FROM stu_student_exam se JOIN tea_exam_manage te on se.exam_manage_id = te.exam_manage_id WHERE se.userid =#{userID} ORDER BY end_time ASC")
+    @Select("SELECT se.total_score,te.exam_name FROM stu_student_exam se JOIN tea_exam_manage te on se.exam_manage_id = te.exam_manage_id WHERE se.userid =#{userId} ORDER BY end_time ASC")
     List<Map<String, BigDecimal>> getTestScoresLineChart(@Param("userId") String userId);
 }
\ No newline at end of file