1、前退学生数量判断

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

@@ -215,7 +215,7 @@ public class TeacherAttendanceServiceImpl extends BaseServiceImpl<Long, TeacherA
 			List<StudentCourseHomework> studentCourseHomeworks = studentCourseHomeworkDao
 					.constructInitialStudentHomeworkRecordsWithPayment(teacherAttendance.getCourseScheduleId(),
 							courseHomework.getId());
-			if(!CollectionUtils.isEmpty(studentCourseHomeworks)){
+			if(CollectionUtils.isEmpty(studentCourseHomeworks)){
 				throw new BizException("此课程没有学生");
 			}
 			studentCourseHomeworkDao.batchInsertStudentCourseHomeworkRecord(studentCourseHomeworks);