fix

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

@@ -773,7 +773,7 @@ public class ExamControlServiceImpl implements ExamControlService {
         FreezeTimeType freezeTimeType=FreezeTimeType.DURATION;
         ExamPropertyCacheBean freezeTimeTypeVal = ExamCacheTransferHelper
                 .getDefaultCachedExamProperty(examId, ExamProperties.FREEZE_TIME_TYPE.toString());
-        if (null != freezeTimeTypeVal && freezeTimeTypeVal.getHasValue()) {
+        if (null!= freezeTimeTypeVal && freezeTimeTypeVal.getHasValue()) {
         	freezeTimeType=FreezeTimeType.valueOf(freezeTimeTypeVal.getValue());
         }
         examingSession.setFreezeTime(StringUtil.toInteger(freezeTime.getValue()));
@@ -1702,7 +1702,7 @@ public class ExamControlServiceImpl implements ExamControlService {
         FreezeTimeType freezeTimeType=FreezeTimeType.DURATION;
         ExamPropertyCacheBean freezeTimeTypeVal = ExamCacheTransferHelper.getDefaultCachedExamProperty(
         		examBean.getId(), ExamProperties.FREEZE_TIME_TYPE.toString());
-        if (null == freezeTimeTypeVal || !freezeTimeTypeVal.getHasValue()) {
+        if (null!= freezeTimeTypeVal && freezeTimeTypeVal.getHasValue()) {
         	freezeTimeType=FreezeTimeType.valueOf(freezeTimeTypeVal.getValue());
         }
         examSessionInfo.setFreezeTimeType(freezeTimeType);