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@@ -141,6 +141,9 @@ public class ImUserFriendServiceImpl extends BaseServiceImpl<Long, ImUserFriend>
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//获取班级关联的学员列表
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Set<Integer> studentIds = classGroupStudentMapperDao.queryStudentIdsByClassGroupId(courseSchedule.getClassGroupId(),null,null);
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ClassGroup classGroup = classGroupDao.get(courseSchedule.getClassGroupId());
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+ if(classGroup == null){
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+ return;
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+ }
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GroupType groupType = classGroup.getGroupType();
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List<ImUserFriend> imUserFriends = saveImUserFriends(studentIds, teacherIds, groupType, classGroup.getMusicGroupId());
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if(imUserFriends.size() > 0){
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