fix：对外课程冲突检测异常

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

@@ -154,21 +154,6 @@ public class CoursesGroupServiceImpl extends BaseServiceImpl<Long, CoursesGroup>
             newCourse.setName(courseGroup.getName());
             newCourse.setOrganId(courseGroup.getOrganId());
         }
-        try {
-            courseScheduleService.checkNewCourseSchedules(newCourses, false);
-        } catch (Exception e) {
-            TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
-            String errMessage;
-            String courseName = e.getMessage().substring(e.getMessage().indexOf(")-") + 2);
-            courseName = courseName.substring(0, courseName.indexOf("("));
-            String courseTime = e.getMessage().substring(e.getMessage().indexOf("在") + 1);
-            courseTime = courseTime.substring(0, courseTime.indexOf("至"));
-            errMessage = "现在课程：";
-            errMessage += courseName;
-            errMessage += "<br/>冲突时间：";
-            errMessage += courseTime;
-            return BaseController.failed(HttpStatus.FOUND, errMessage);
-        }
 
         CourseSchedule firstCourseSchedule = newCourses.stream().min(Comparator.comparing(CourseSchedule::getStartClassTime)).get();
         if (firstCourseSchedule.getStartClassTime().before(now)) {
@@ -221,6 +206,22 @@ public class CoursesGroupServiceImpl extends BaseServiceImpl<Long, CoursesGroup>
             courseSchedule.setCreateTime(now);
             courseSchedule.setUpdateTime(now);
         }
+
+        try {
+            courseScheduleService.checkNewCourseSchedules(newCourses, false);
+        } catch (Exception e) {
+            TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
+            String errMessage;
+            String courseName = e.getMessage().substring(e.getMessage().indexOf(")-") + 2);
+            courseName = courseName.substring(0, courseName.indexOf("("));
+            String courseTime = e.getMessage().substring(e.getMessage().indexOf("在") + 1);
+            courseTime = courseTime.substring(0, courseTime.indexOf("至"));
+            errMessage = "现在课程：";
+            errMessage += courseName;
+            errMessage += "<br/>冲突时间：";
+            errMessage += courseTime;
+            return BaseController.failed(HttpStatus.FOUND, errMessage);
+        }
         courseScheduleDao.batchAddCourseSchedules(newCourses);
 
         for (CourseSchedule courseSchedule : newCourses) {