refactor: 修改QuizStudentAnswer字段名

src/main/java/nju/seec/helper/entity/QuizStudentAnswer.java

@@ -43,9 +43,9 @@ public class QuizStudentAnswer {
     @Column(nullable = false)
     private Map<String, Object> answers;
 
-    @Column(name = "modified_at", nullable = false)
+    @Column(name = "submit_at", nullable = false)
     @UpdateTimestamp
-    private LocalDateTime modifiedAt;
+    private LocalDateTime submitAt;
 
     @Column(name = "submit_number", nullable = false, columnDefinition = "int default 1 not null")
     private Integer submitNumber = 0;

src/main/java/nju/seec/helper/vo/quiz/QuizStudentAnswerVO.java

@@ -18,10 +18,22 @@ public class QuizStudentAnswerVO {
     private Long studentId;
     private String studentName;
 
+    /**
+     * 回答情况
+     */
     private Map<String, Object> answers;
 
-    private LocalDateTime modifiedAt;
+    /**
+     * 提交时间
+     */
+    private LocalDateTime submitAt;
+    /**
+     * 已提交次数
+     */
     private Integer submitNumber;
+    /**
+     * 自动化判分的分数
+     */
     private BigDecimal score;
 
     public QuizStudentAnswerVO(@NonNull QuizStudentAnswer quizStudentAnswer) {
@@ -30,7 +42,7 @@ public class QuizStudentAnswerVO {
         this.studentId = quizStudentAnswer.getStudent().getId();
         this.studentName = quizStudentAnswer.getStudent().getName();
         this.answers = quizStudentAnswer.getAnswers();
-        this.modifiedAt = quizStudentAnswer.getModifiedAt();
+        this.submitAt = quizStudentAnswer.getSubmitAt();
         this.submitNumber = quizStudentAnswer.getSubmitNumber();
         this.score = quizStudentAnswer.getScore();
     }