bug fix

examcloud-core-oe-student-service/src/main/java/cn/com/qmth/examcloud/core/oe/student/service/impl/ExamControlServiceImpl.java

@@ -837,7 +837,7 @@ public class ExamControlServiceImpl implements ExamControlService {
         //默认删除7天以前的数据
         int days = PropertyHolder.getInt("oe.cleanTempFileAnswer.thresholdDays", 7);
         Date dateBeforeDays = DateUtils.addDays(new Date(), -1 * days);
-        examFileAnswerTempRepo.deleteByCreationTimeBefore(dateBeforeDays);
+        examFileAnswerTempRepo.deleteByCreationTime(dateBeforeDays);
     }
 
     /**