1、服务指标；

2、增加课外训练待布置学员列表；
3、网管课续费提醒；

mec-biz/src/main/java/com/ym/mec/biz/service/impl/StudentServeServiceImpl.java

@@ -140,7 +140,8 @@ public class StudentServeServiceImpl implements StudentServeService {
                     studentExtracurricularExercisesSituation.setActualExercisesNum(1);
                     long replyNum = studentHomeworks.stream().filter(e -> YesOrNoEnum.YES.equals(e.getStatus())).count();
                     studentExtracurricularExercisesSituation.setExercisesReplyNum(replyNum>0?1:0);
-                    if(replyNum>0){
+                    long haveSubmitTimes = studentHomeworks.stream().filter(e -> Objects.nonNull(e.getSubmitTime())).count();
+                    if(replyNum>0&&haveSubmitTimes>0){
                         Date lastSubmitTime = studentHomeworks.stream().filter(e->Objects.nonNull(e.getSubmitTime())).max(Comparator.comparing(StudentServeCourseHomeworkDto::getSubmitTime)).get().getSubmitTime();
                         studentExtracurricularExercisesSituation.setLastSubmitTime(lastSubmitTime);
                     }
@@ -178,7 +179,8 @@ public class StudentServeServiceImpl implements StudentServeService {
                 studentExtracurricularExercisesSituation.setActualExercisesNum(1);
                 long replyNum = studentExercises.stream().filter(e -> e.getStatus()==1).count();
                 studentExtracurricularExercisesSituation.setExercisesReplyNum(replyNum>0?1:0);
-                if(replyNum>0){
+                long haveSubmitTimes = studentExercises.stream().filter(e->Objects.nonNull(e.getSubmitTime())).count();
+                if(replyNum>0&&haveSubmitTimes>0){
                     Date lastSubmitTime = studentExercises.stream().filter(e->Objects.nonNull(e.getSubmitTime())).max(Comparator.comparing(ExtracurricularExercisesReply::getSubmitTime)).get().getSubmitTime();
                     studentExtracurricularExercisesSituation.setLastSubmitTime(lastSubmitTime);
                 }