int HttpFileImpl::saveTo(const filesystem::path &pathAndFileName) const
{
    LOG_TRACE << "save uploaded file:" << pathAndFileName;
    auto wPath = utils::toNativePath(pathAndFileName.native());
    std::ofstream file(wPath, std::ios::binary);
    if (file.is_open())
    {
        file.write(fileContent_.data(), fileContent_.size());
        file.close();
        return 0;
    }
    else
    {
        LOG_ERROR << "save failed!";
        return -1;
    }
}