REQ-2907: 查询单位时指定pageSize

im-center-server/src/main/java/cn/axzo/im/service/impl/MessageHistoryServiceImpl.java

@@ -333,7 +333,10 @@ public class MessageHistoryServiceImpl extends ServiceImpl<MessageHistoryMapper,
             return Collections.emptyMap();
         }
 
-        return organizationalUnitApi.page(OrganizationalUnitQuery.builder().unitIds(ouIds).build())
+        OrganizationalUnitQuery query = new OrganizationalUnitQuery();
+        query.setUnitIds(ouIds);
+        query.setPageSize(param.getPageSize() + 1L);
+        return organizationalUnitApi.page(query)
                 .getData()
                 .getList()
                 .stream()