fix:达人没粉丝

cooleshow-user/user-biz/src/main/java/com/yonge/cooleshow/biz/dal/service/impl/ImGroupServiceImpl.java

@@ -266,7 +266,9 @@ public class ImGroupServiceImpl extends ServiceImpl<ImGroupDao, ImGroup> impleme
             imGroup.setId(imGroupId);
             this.baseMapper.insert(imGroup);
             List<GroupMember> groupMembers = imGroupMemberService.initGroupMember(imGroupId, imGroup.getCreateBy(), true, ImGroupMemberRoleType.TEACHER);
-            groupMembers.addAll(imGroupMemberService.initGroupMembers(imGroupId, studentIdList, ImGroupMemberRoleType.STUDENT));
+            if (!CollectionUtils.isEmpty(studentIdList)) {
+                groupMembers.addAll(imGroupMemberService.initGroupMembers(imGroupId, studentIdList, ImGroupMemberRoleType.STUDENT));
+            }
             //创建融云群
             this.rtcCreate(sysUser.getId(), imGroupId, imGroup.getName());
             //加入融云群