fix群成员机构ID

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

@@ -304,7 +304,8 @@ public class ImGroupServiceImpl extends BaseServiceImpl<String, ImGroup> impleme
 
     @Override
     public List<ImGroup> queryByUserId(Integer userId, String search,String groupType) {
-        List<ImGroup> imGroups = imGroupDao.queryByUserId(userId, search, groupType);
+        List<ImGroup> imGroups = imGroupDao.queryByUserId(userId, search, groupType).stream()
+            .filter(Objects::nonNull).collect(Collectors.toList());
         for (ImGroup item : imGroups) {
             if (Objects.nonNull(item.getGroupType()) && StringUtils.isBlank(item.getImg())) {
                 item.setImg(item.getGroupType().getAvatar());
@@ -492,7 +493,8 @@ public class ImGroupServiceImpl extends BaseServiceImpl<String, ImGroup> impleme
         }
         List<String> imGroupIds = imGroupMembers.stream().map(ImGroupMember::getImGroupId).collect(Collectors.toList());
         // 群组没人，删除群组
-        List<ImGroup> imGroups = imGroupDao.queryByUserId(userId.intValue(),null, ImGroup.GroupTypeEnum.SCHOOL.getCode());
+        List<ImGroup> imGroups = imGroupDao.queryByUserId(userId.intValue(),null, ImGroup.GroupTypeEnum.SCHOOL.getCode()).stream()
+            .filter(Objects::nonNull).collect(Collectors.toList());
 
 
         imGroupMemberDao.deleteByUserId(userId);