fix

mec-im/src/main/java/com/ym/service/Impl/RoomServiceImpl.java

@@ -175,13 +175,13 @@ public class RoomServiceImpl implements RoomService {
             String endClassTime = DateUtil.format(schedule.getEndClassTime(), DateUtil.EXPANDED_TIME_FORMAT);
             schedule = courseScheduleDao.getLastCourse(schedule.getClassGroupId(), classDate + " " + endClassTime, schedule.getActualTeacherId(), continueCourseTime);
             if (schedule != null) {
-                surplusTime = DateUtil.minutesBetween(new Date(), schedule.getEndClassTime());
+                surplusTime = DateUtil.secondsBetween(new Date(), schedule.getEndClassTime());
             } else {
                 break;
             }
         }
         //获取当前课程剩余时长
-        roomResult.setSurplusTime(surplusTime * 60);
+        roomResult.setSurplusTime(Math.max(surplusTime, 0));
 
         return autoCloseNetworkRoomTime;
     }