update

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

@@ -1521,13 +1521,21 @@ public class ClassGroupServiceImpl extends BaseServiceImpl<Integer, ClassGroup>
                 imFeignService.groupQuit(new ImGroupModel(classGroupId.toString(), imGroupMembers, classGroup.getName()));
             }
         }
+
         List<ClassGroupTeacherMapper> newTeacherMapperList = classGroup4MixDto.getClassGroupTeacherMapperList();
-        newTeacherMapperList.forEach(e->{
-            if(e.getTeacherRole() == TeachTypeEnum.BISHOP){
+        if(newTeacherMapperList.size() > 0){
+            //获取之前的班级老师
+            Set<Integer> groupTeacher = classGroupDao.findGroupTeacher(classGroupId);
+            groupTeacher.forEach(e->{
+                ImGroupMember[] imGroupMembers = {new ImGroupMember(e.toString())};
+                imFeignService.groupQuit(new ImGroupModel(classGroupId.toString(), imGroupMembers, classGroup.getName()));
+            });
+            newTeacherMapperList.forEach(e->{
                 ImGroupMember[] imGroupMembers = {new ImGroupMember(e.getUserId().toString())};
                 imFeignService.groupJoin(new ImGroupModel(classGroupId.toString(), imGroupMembers, classGroup.getName()));
-            }
-        });
+            });
+        }
+
         if (classGroup4MixDto.getCourseAddType().equals("onlyUpdateTeacher")) {
 			List<Integer> classGroupIds = new ArrayList<Integer>();
 			classGroupIds.add(classGroupId);