...

examcloud-core-examwork-service/src/main/java/cn/com/qmth/examcloud/core/examwork/service/impl/ExamStudentServiceImpl.java

@@ -328,10 +328,14 @@ public class ExamStudentServiceImpl implements ExamStudentService {
 		if (null != examStudentInfo.getSpecialBeginTime()) {
 			examStudent.setExt4(DateUtil.format(examStudentInfo.getSpecialBeginTime(),
 					DatePatterns.CHINA_DEFAULT));
+		} else {
+			examStudent.setExt4(null);
 		}
 		if (null != examStudentInfo.getSpecialEndTime()) {
 			examStudent.setExt5(DateUtil.format(examStudentInfo.getSpecialEndTime(),
 					DatePatterns.CHINA_DEFAULT));
+		} else {
+			examStudent.setExt5(null);
 		}
 
 		Boolean enable = examStudentInfo.getEnable();