public ActionResult BatchDownloadFiles(string str, int type)

        {

            var idList = str.Split(',').ToList().ConvertAll(x => int.Parse(x));

            MemoryStream ms = new MemoryStream();

            ZipOutputStream zos = new ZipOutputStream(ms);

            zos.IsStreamOwner = false;

            zos.SetLevel();//设置压缩级别

            var rsp = new GetListByDetailIDListRequest

            {

                UserID = CurrentUserId,

                JobTypeID = type,

                IDList = idList

            }.GetResponse();

            if (rsp.IsSuccess)

            {

                rsp.Data.ForEach(dto =>

                {

                    var filebyte = ByteOfGetOrderFiles(dto);   //byte类型的数据

                    ZipEntry entry = new ZipEntry(fileName);  //定义新的压缩数据对象

                    zos.PutNextEntry(entry);

                    zos.Write(filebyte, , filebyte.Length);  //写入

                });

            }

            zos.Finish();

            zos.Close();

            ms.Position = ;

            return File(ms, "application/x-zip-compressed", string.Format("批量下载文件-{0}.zip", DateTime.Now.ToString("yyyy年MM月dd HH时mm分ss秒")));

        }

        public byte[] ByteOfGetOrderFiles(ExtractRecordDetailDTO dto)

        {

            var stream = DownloadFile(dto.SourceFile);

            byte[] buffur = new byte[stream.Length];

            stream.Read(buffur, , (int)stream.Length);

            return buffur;

        }

　　　　public static Stream DownloadFile(string path)

　　　　{

　　　　　　using (var client = new WebClient())

　　　　　　{

　　　　　　　　var stream = client.DownloadData(path);

　　　　　　　　var outStream = new MemoryStream(stream);

　　　　　　　　return outStream;

　　　　　　}

　　　　}