public List<Long> batchSelectImageIds(Long templateId){List<Long> imageIdList = new ArrayList<>();int count = templateBlackImageRelMapper.selectImageCount(templateId);int limit = 500;//批量查询次数int batchSelectCount = count % limit == 0 ? count / limit : count / limit + 1;int start = 0;int end = 0;for (int i=1;i<=batchSelectCount;i++){end = i==batchSelectCount ? end + count%limit : end+limit;List<Long> imageIds = templateBlackImageRelMapper.batchSelectImageIds(templateId,start,limit);start = end;imageIdList.addAll(imageIds);}return imageIdList;}