/// <summary>
/// 下载文件
/// </summary>
/// <param name="urlFormat">API接口地址格式</param>
/// <param name="stream">下载的文件流信息</param>
/// <param name="querys">需要传递的参数</param>
public static void Download(string urlFormat, Stream stream, params string[] querys)
{
RequestUtility.Download(string.Format(urlFormat, querys), stream);
}