ASP.NET 打包压缩下载文件

/// 

        /// 打包下载二维码按钮
        /// 
        /// 根据当前勾选数据查询二维码照片是否已上传至文件服务器，如果已上传则获取对应二维码照片文件流，如果未上传则先上传至文件服务器后获取对应二维码照片文件流，最后批量压缩文件并弹框选择文件存放路径
        /// 
        /// 
        [GridPostBack(GridPostBackMode.CheckedRows, true, "dgList")]
        protected void btnZipDown_Click(WuhanIns.Web.MiniUI.MiniButton sender, WuhanIns.Web.MiniUI.Core.AjaxActionEventArgs e)
        {
            HrStaffBaseItem[] detailItem = e.GetRequestParam("dgList");
            if (detailItem.Count() <= 0)
            {
                JSAlert("请至少选择一条记录!");
                return;
            }

            #region 验证数据状态
            string strMsg = string.Empty;
            string SubContractorName = string.Empty;
            string projectid = e.GetRequestParam("Project_Id");
            List baseInfos = HrSubcontractorManager.Find(true);
            foreach (HrStaffBaseItem BaseItem in detailItem)
            {
                if (baseInfos != null && baseInfos.Count() > 0)
                {
                    IEnumerable entities = baseInfos.Where(x => x.Id == BaseItem.SubcontractorId && x.ProjectId == projectid);
                    if (entities != null && entities.Count() > 0)
                    {
                        SubContractorName = entities.First().SubcontractorName;
                    }
                }
                if (string.IsNullOrEmpty(BaseItem.CurState.ToString()))
                {
                    strMsg += "分包商" + SubContractorName + "，人员" + BaseItem.Name + "当前状态为待进场， \n";
                }
                else if (BaseItem.CurState == EPC人员状态.待进场 || BaseItem.CurState == EPC人员状态.进场审批中 || BaseItem.CurState == EPC人员状态.已退场)
                {
                    strMsg += "分包商" + SubContractorName + "，人员" + BaseItem.Name + "当前状态为" + BaseItem.CurState.ToString() + "， \n";
                }
                if (BaseItem.IsBlackList == 人员黑名单状态.拉入黑名单审批中)
                {
                    strMsg += "分包商" + SubContractorName + "，人员" + BaseItem.Name + "当前状态为" + BaseItem.IsBlackList.ToString() + "， \n";
                }
            }
            if (!string.IsNullOrEmpty(strMsg))
            {
                JSAlert(strMsg + "不能执行当前操作!");
                return;
            }
            #endregion

            string strAddress = Server.MapPath("../TempFiles/ZipFiles/");
            if (Directory.Exists(strAddress)) //如果文件夹存在则删除，初始化
            {
                Directory.Delete(strAddress, true);//删除指定的目录并（如果指示）删除该目录中的所有子目录和文件。
            }
            string zipPath = Server.MapPath("../TempFiles/ZipFiles/") + "人员二维码打包下载" + DateTime.Now.ToString("yyyyMMddHHmmss");//压缩文件存放路径
            string filePath = string.Empty;
            List files = new List();//批量压缩文件路径

            string FileType = "HrStaffBase人员二维码";
            string FileId = string.Empty;//文件ID
            string FileName = string.Empty;//文件名，带后缀
            byte[] QRCodeByte = null;
            string enCodeString = string.Empty;
            StringBuilder strErr = new StringBuilder();
            foreach (HrStaffBaseItem item in detailItem)
            {
                FileInfoListOutput file = client.ListFileInfo(item.Id, FileType).FirstOrDefault();//步骤1，根据ID与FileType获取指定文件
                if (file != null)
                {
                    #region 已上传文件服务器
                    FileId = file != null ? file.FileId : null;
                    FileName = file != null ? file.FileName : null;
                    if (!string.IsNullOrEmpty(FileId))
                    {
                        #region 步骤2，单个文件生成压缩文件
                        if (!Directory.Exists(zipPath)) //如果文件夹不存在则创建
                        {
                            Directory.CreateDirectory(zipPath);
                        }
                        filePath = zipPath + "\\" + FileName;
                        byte[] fileData = client.DownloadFile(file.FileId).Result;//根据FileId从文件服务器获取文件流
                        ZipHelper.BytesToFile(fileData, zipPath, filePath);//在临时路径中生成临时文件，用于压缩
                        #endregion
                    }
                    #endregion
                }
                else
                {
                    #region 生成二维码图片并返回对应二维码图片字节流
                    enCodeString = item.Id + "&" + item.Name + "&" + item.IdentityCard + "&" + item.Position.ToString() + "&" + item.SubcontractorId + "&" + item.SupplyName;
                    FileName = item.Name + "&" + item.IdentityCard + ".jpg";
                    string FileDirPath = Server.MapPath("../TempFiles/QRCode/");
                    string QRCodefilePath = FileDirPath + FileName;//必须经过这一步操作才能变成有效路径
                    if (!Directory.Exists(FileDirPath))
                    {
                        Directory.CreateDirectory(FileDirPath);
                    }
                    QRCodeByte = client.CreateQRByte(enCodeString, ErrorCorrectionLevel.L, ImageFormat.Jpeg, 4, Color.Black, QRCodefilePath);
                    #endregion

                    #region 单个文件上传文件服务器，文件流上传
                    byte[] bytes = QRCodeByte;
                    string dept_id = UserContext.CurrentUser.AccCompanyId;
                    if (UserContext.CurrentUser.IsAccCompanyInner && !UserContext.CurrentUser.IsSystemAdmin)//内部单位
                    {
                        dept_id = UserContext.CurrentUser.DeptId;
                    }
                    Dictionary metaData = new Dictionary();
                    metaData.Add("ContentType", "application/octet-stream"); //mime类型
                    metaData.Add("From", "劳务人员管理");
                    metaData.Add("busiId", item.Id);
                    metaData.Add("FileType", FileType);
                    metaData.Add("ContractId", item.SubcontractorId);
                    metaData.Add("BusiTitle", item.Name + "&" + item.IdentityCard + "人员二维码");
                    metaData.Add("UploadDeptId", dept_id);
                    client.Upload(item.Id, "", FileType, FileName, bytes, metaData);
                    #endregion

                    #region 单个文件生成压缩文件
                    FileInfoListOutput fileInfo = client.ListFileInfo(item.Id, FileType).FirstOrDefault();//步骤1，根据ID与FileType获取指定文件
                    if (fileInfo != null)
                    {
                        if (!Directory.Exists(zipPath)) //如果文件夹不存在则创建
                        {
                            Directory.CreateDirectory(zipPath);
                        }
                        filePath = zipPath + "\\" + FileName;
                        byte[] fileData = client.DownloadFile(fileInfo.FileId).Result;//根据FileId从文件服务器获取文件流
                        ZipHelper.BytesToFile(fileData, zipPath, filePath);//在临时路径中生成临时文件，用于压缩
                    }
                    #endregion
                }
            }

            #region 步骤3，打包压缩指定路径文件，并弹框选择下载路径
            ICSharpCode.SharpZipLib.Checksum.Crc32 crc = new ICSharpCode.SharpZipLib.Checksum.Crc32();
            string zipFilePath = (zipPath + ".zip");
            ZipHelper.CreateZip(zipPath, zipFilePath);//根据临时文件夹路径生成打包压缩文件
            if (Directory.Exists(zipPath))
                Directory.Delete(zipPath, true);//删除临时文件夹及文件

            UrlParams urlParam = new UrlParams();
            urlParam.AddParameter("FILE_PATH", zipFilePath.Replace("\\", "|"));
            string url = urlParam.GetUrl("../DownLoadFile.aspx");//弹框选择下载文件存放路径
            this.JSShowWindow(url, true);
            #endregion
        }

using Gma.QrCodeNet.Encoding;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using WuhanIns.Infrastructure.Dtos;
using WuhanIns.Infrastructure.Utils;

namespace InsHR.Business.Util
{
    public class FileClient
    {
        private const string FullTextSearchUrl = "api/file/search";
        private const string RemoveByBusiUrl = "api/file/remove/{0}/{1}";
        private const string RemoveUrl = "api/file/remove/{0}";
        private const string FileInfoUrl = "api/file/fileinfo/{0}";
        private const string FileInfoListUrl = "api/file/fileinfos/{0}/{1}";
        private const string DownloadAssociatedFileUrl = "api/file/download/{0}/{1}";
        private const string DownloadUrl = "api/file/download/{0}";
        private const string UploadUrl = "api/file/upload";
        private const string UploadChunkUrl = "api/file/UploadChunk";
        private const string BeginUploadChunk = "api/file/BeginUploadChunk";
        private const string EndUploadChunk = "api/file/EndUploadChunk";
        private const string IndexFileUrl = "api/file/IndexFile";
        private const string IsExistUrl = "api/Doc/IsExist/{0}/{1}";
        private const string ForceCovertDocUrl = "api/Doc/ForceCovertDoc";

        private readonly string _serverUrl;
        private readonly int _chunkSize;

        public FileClient(string serverUrl)
            : this(serverUrl, 500 * 1000)
        {
        }

        public FileClient(string serverUrl, int chunkSize)
        {
            this._chunkSize = chunkSize;
            this._serverUrl = serverUrl;

        }

        public string Upload(string busiId, string sfileCode, string fileType, HttpPostedFile fileData, IDictionary metaData)
        {
            using (HttpClient client = new HttpClient())
            {
                using (var content = new MultipartFormDataContent())//表明是通过multipart/form-data的方式上传数据  
                {
                    NameValueCollection namevals = new NameValueCollection();
                    namevals.Add("busiId", busiId);
                    namevals.Add("fileCode", sfileCode);
                    namevals.Add("fileType", fileType);
                    namevals.Add("metaData", JsonHelper.Serialize(metaData));
                    var formDatas = GetFormDataByteArrayContent(namevals);//获取键值集合对应的ByteArrayContent集合  
                    HashSet fileset = new HashSet();
                    fileset.Add(fileData);
                    var files = GetFileByteArrayContent(fileset);//获取文件集合对应的ByteArrayContent集合  
                    Action> act = (dataContents) =>
                    {//声明一个委托，该委托的作用就是将ByteArrayContent集合加入到MultipartFormDataContent中  
                        foreach (var byteArrayContent in dataContents)
                        {
                            content.Add(byteArrayContent);
                        }
                    };
                    act(formDatas);//执行act  
                    act(files);//执行act  
                    try
                    {
                        return WebApiHelper.Post>(this._serverUrl, UploadUrl, content).First();
                    }
                    catch (Exception ex)
                    {
                        throw ex;
                    }
                }
            }
        }

        private List GetFileByteArrayContent(HashSet files)
        {
            List list = new List();
            foreach (var file in files)
            {
                byte[] by = new byte[file.ContentLength];
                file.InputStream.Read(by, 0, by.Length);
                file.InputStream.Close();
                var fileContent = new ByteArrayContent(by);
                fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
                {
                    FileName = file.FileName,
                };
                list.Add(fileContent);
            }
            return list;
        }

        public string Upload(string busiId, string sfileCode, string fileType, string fileName, byte[] fileData, IDictionary metaData)
        {
            using (HttpClient client = new HttpClient())
            {
                using (var content = new MultipartFormDataContent())//表明是通过multipart/form-data的方式上传数据  
                {
                    NameValueCollection namevals = new NameValueCollection();
                    namevals.Add("busiId", busiId);
                    namevals.Add("fileCode", sfileCode);
                    namevals.Add("fileType", fileType);
                    namevals.Add("metaData", JsonHelper.Serialize(metaData));
                    var formDatas = GetFormDataByteArrayContent(namevals);//获取键值集合对应的ByteArrayContent集合 
                    var files = GetFileByteArrayContent(fileData, fileName);//获取文件集合对应的ByteArrayContent集合  
                    Action> act = (dataContents) =>
                    {//声明一个委托，该委托的作用就是将ByteArrayContent集合加入到MultipartFormDataContent中  
                        foreach (var byteArrayContent in dataContents)
                        {
                            content.Add(byteArrayContent);
                        }
                    };
                    act(formDatas);//执行act  
                    act(files);//执行act 
                    try
                    {
                        return WebApiHelper.Post>(this._serverUrl, UploadUrl, content).First();
                    }
                    catch (Exception ex)
                    {
                        throw ex;
                    }
                }
            }
        }

        private List GetFileByteArrayContent(byte[] Data, string sFileName)
        {
            List list = new List();
            var fileContent = new ByteArrayContent(Data);
            fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
            {
                FileName = sFileName,
            };
            list.Add(fileContent);
            return list;
        }
        /// 
  
        /// 获取键值集合对应的ByteArrayContent集合  
        /// 
  
        ///   
        ///   
        private List GetFormDataByteArrayContent(NameValueCollection collection)
        {
            List list = new List();
            foreach (var key in collection.AllKeys)
            {
                if (collection[key] != null)
                {
                    var dataContent = new ByteArrayContent(Encoding.UTF8.GetBytes(collection[key]));
                    dataContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
                    {
                        Name = key
                    };
                    list.Add(dataContent);
                }
            }
            return list;
        }


        public bool Remove(string fileId)
        {
            return WebApiHelper.Get(this._serverUrl, string.Format(RemoveUrl, fileId));
        }

        public async Task DownloadFile(string fileId)
        {
            return await WebApiHelper.GetByteArrayAsync(this._serverUrl, string.Format(DownloadUrl, fileId)).ConfigureAwait(false);
        }

        public async Task DownloadFileByFileType(string fileId, string associatedFileType)
        {
            return await WebApiHelper.GetByteArrayAsync(this._serverUrl, string.Format(DownloadAssociatedFileUrl, fileId, associatedFileType)).ConfigureAwait(false);
        }

        public List ListFileInfo(string busiId, string sFileType)
        {
            return WebApiHelper.Get>(this._serverUrl, string.Format(FileInfoListUrl, busiId, sFileType));
        }

        public FileInfoListOutput GetFileInfo(string sFileId)
        {
            return WebApiHelper.Get(this._serverUrl, string.Format(FileInfoUrl, sFileId));
        }

        public FileFullTextSearchOutput FullTextSearch(FullTextSearchInput input)
        {
            return WebApiHelper.Post(this._serverUrl, FullTextSearchUrl, input);
        }


        public string Upload(string fileName, byte[] fileBytes, IDictionary metadata, Action reportProgress)
        {
            var fileHash = Md5Helper.Hash(fileBytes);

            var chunkCount = fileBytes.Count() / this._chunkSize;
            if (chunkCount * this._chunkSize < fileBytes.Count())
            {
                chunkCount++;
            }

            string fileId = string.Empty;
            RetryHelper.Retry(
                    () =>
                    {
                        fileId = WebApiHelper.Post(this._serverUrl, BeginUploadChunk, new { FileHash = fileHash, FileName = fileName, Metadata = metadata });
                    },
                    3,
                    typeof(Exception)
                );
            if (!string.IsNullOrWhiteSpace(fileId))
            {
                if (reportProgress != null)
                {
                    reportProgress(100);
                }

                return fileId;
            }

            var oldPercent = 0;
            for (var index = 0; index < chunkCount; index++)
            {
                RetryHelper.Retry(
                    () =>
                    {
                        var uploadResult = WebApiHelper.Post(this._serverUrl, UploadChunkUrl, new { ChunkData = fileBytes.Skip(index * this._chunkSize).Take(this._chunkSize).ToArray(), FileHash = fileHash, Index = index });
                        if (!uploadResult.Contains("上传成功"))
                        {
                            throw new Exception(uploadResult);
                        }
                    },
                    3,
                    typeof(Exception)
                );

                if (reportProgress != null)
                {
                    var newPercent = ((index * 100) / chunkCount);
                    if (newPercent > oldPercent && newPercent < 100)
                    {
                        reportProgress(newPercent);
                        oldPercent = newPercent;
                    }
                }
            }

            RetryHelper.Retry(
                    () =>
                    {
                        fileId = WebApiHelper.Post(this._serverUrl, EndUploadChunk, new { ChunkCount = chunkCount, FileHash = fileHash, FileName = fileName });
                    },
                    3,
                    typeof(Exception)
                );

            if (reportProgress != null)
            {
                reportProgress(100);
            }

            return fileId;
        }

        public async Task DownloadFile(string fileId, Action reportProgress)
        {
            long rangeStart = 0;
            long rangeEnd = this._chunkSize - 1;
            long maxLength = 0;
            var oldPercent = 0;
            using (var memoryStream = new MemoryStream())
            {
                while (true)
                {
                    var response = await WebApiHelper.GetResponse(this._serverUrl, string.Format(DownloadUrl, fileId), new Dictionary { { "Range", string.Format("bytes={0}-{1}", rangeStart, rangeEnd) } }).ConfigureAwait(false);

                    if (response.Content.Headers.GetValues("Content-Type").First().Contains("application/json"))
                    {
                        var webApiResponse = JsonHelper.Deserialize>(response.Content.ReadAsStringAsync().Result);

                        throw new Exception(webApiResponse.Message);
                    }

                    if (maxLength == 0)
                    {
                        var contentRange = response.Content.Headers.GetValues("Content-Range").First();
                        maxLength = long.Parse(contentRange.Split('/')[1]);
                    }

                    var responseStream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);

                    await responseStream.CopyToAsync(memoryStream).ConfigureAwait(false);

                    if (rangeEnd >= maxLength)
                    {
                        if (reportProgress != null)
                        {
                            reportProgress(100);
                        }
                        return memoryStream.ToArray();
                    }

                    if (reportProgress != null)
                    {
                        if (reportProgress != null)
                        {
                            var newPercent = Convert.ToInt32(rangeEnd * 100 / maxLength);
                            if (newPercent > oldPercent && newPercent < 100)
                            {
                                reportProgress(newPercent);
                                oldPercent = newPercent;
                            }
                        }
                    }

                    rangeStart = rangeEnd + 1;
                    rangeEnd += this._chunkSize;
                }
            }
        }


        public void File2Doc(DocInfoUnput input)
        {
            try
            {
                bool bExist = IsExistDoc(input.BusiId, input.FileType);
                if (!bExist)
                {
                    string bSave = ForceCovertDoc(input);

                }
            }
            catch (Exception ex)
            {
            }
        }
        private bool IsExistDoc(string sBusId, string sFileType)
        {
            return WebApiHelper.Get(this._serverUrl, string.Format(IsExistUrl, sBusId, sFileType));
        }

        private string ForceCovertDoc(DocInfoUnput input)
        {
            try
            {
                return WebApiHelper.Post(this._serverUrl, ForceCovertDocUrl, input);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        
        /// 

        /// 生成二维码文件流
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        public byte[] CreateQRByte(string content, ErrorCorrectionLevel level, ImageFormat imgFormat, int size, Color bgColor, string filePath)
        {
            #region

            #region 生成二维码，并保存二维码图片
            QrEncoder qrEncoder = new QrEncoder(level);
            QrCode qrCode = qrEncoder.Encode(content);//生成二维码
            System.Drawing.Bitmap image;
            image = new Bitmap(qrCode.Matrix.Width * size, qrCode.Matrix.Height * size);
            image.SetResolution(180f, 180f);

            Graphics gdiobj = Graphics.FromImage(image);
            gdiobj.CompositingQuality = CompositingQuality.HighQuality;
            gdiobj.SmoothingMode = SmoothingMode.HighQuality;
            gdiobj.InterpolationMode = InterpolationMode.HighQualityBicubic;
            gdiobj.PixelOffsetMode = PixelOffsetMode.HighQuality;
            for (Int32 i = 0; i < qrCode.Matrix.Height; i++)
            {
                for (Int32 j = 0; j < qrCode.Matrix.Width; j++)
                {
                    if (qrCode.Matrix.InternalArray[i, j])
                    {
                        gdiobj.FillRectangle(new SolidBrush(bgColor), i * size, j * size, size, size);
                    }
                }
            }
            System.Drawing.Imaging.EncoderParameters ep = new System.Drawing.Imaging.EncoderParameters(1);
            ep.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 800L);

            image.Save(filePath);//保存二维码图片
            #endregion

            #region 根据二维码图片生成字节返回数据
            if (File.Exists(filePath))//生成二维码字节返回数据
            {
                byte[] datas = null;
                using (FileStream stream = new FileStream(filePath, FileMode.Open))
                {
                    datas = new byte[stream.Length];
                    stream.Read(datas, 0, datas.Length);
                }
                try
                {
                    File.Delete(filePath);//删除当前生成的二维码，初始化
                }
                catch
                {

                }
                return datas;
            }
            return null;
            #endregion

            #endregion
        }

    }



    public class FileInfoListOutput
    {
        public FileInfoListOutput()
        {
        }
        /// 

        /// 文件名称
        /// 
        public string FileName { set; get; }
        /// 

        /// 文件ID，文件存储到文件服务器后生成的ID，用于后续操作改文件
        /// 
        public string FileId { set; get; }
        /// 

        /// 文件编码，文件的业务编码
        /// 
        public string FileCode { set; get; }
        /// 

        /// 业务ID，业务系统中文件管理的业务数据的ID，用于从业务加载对应文件
        /// 
        public string BusiId { set; get; }

        public string FileSize { set; get; }

        /// 

        /// 文件类型，业务端自定义，可以用于后续查询和其他操作
        /// 
        public string FileType { set; get; }
        /// 

        /// 上传时间
        /// 
        public DateTime UploadDate { get; set; }

        public string ExtProperty { set; get; }

        public IDictionary Metadata { set; get; }
    }

    public class FullTextSearchInput
    {
        public string Keywords { get; set; }
        public int From { get; set; }
        public int Size { get; set; }
        public IDictionary Metadata { get; set; }
    }
    public class FileFullTextSearchOutput
    {
        public IEnumerable Files { get; set; }

        public long Count { get; set; }

        public class File
        {
            public string Id { get; set; }
            public string FileName { get; set; }
            public DateTime UploadDate { get; set; }
            public Dictionary> Highlights { get; set; }
        }
    }

    public class DocInfoUnput
    {
        public DocInfoUnput()
        {
        }
        /// 

        /// 业务ID，业务系统中文件管理的业务数据的ID，用于从业务加载对应文件
        /// 
        public string BusiId { set; get; }
        /// 

        /// 文件类型，业务端自定义，可以用于后续查询和其他操作
        /// 
        public string FileType { set; get; }
        /// 

        /// 业务编码
        /// 
        public string BusiCode { set; get; }
        /// 

        /// 业务明恒
        /// 
        public string BusiTitle { set; get; }
        /// 

        /// 合同ID
        /// 
        public string ContractId { set; get; }
        /// 

        /// 所属WBS
        /// 
        public string QWBSId { set; get; }
        /// 

        /// 上传单位ID
        /// 
        public string UploadDeptId { set; get; }
        /// 

        /// 上传单位
        /// 
        public DateTime UploadDate { set; get; }
        /// 

        /// 所属模块
        /// 
        public string FromModule { set; get; }
    }
}

using ICSharpCode.SharpZipLib.Checksum;
using ICSharpCode.SharpZipLib.Zip;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace InsHR.Business.Util
{
    public class ZipHelper
    {
        /// 

        /// 压缩文件
        /// 
        /// 
        /// 
        public static void CreateZip(string sourceFilePath, string destinationZipFilePath)
        {
            if (sourceFilePath[sourceFilePath.Length - 1] != System.IO.Path.DirectorySeparatorChar)
                sourceFilePath += System.IO.Path.DirectorySeparatorChar;

            ZipOutputStream zipStream = new ZipOutputStream(File.Create(destinationZipFilePath));
            zipStream.SetLevel(0);  // 压缩级别 0-9
            CreateZipFiles(sourceFilePath, zipStream, sourceFilePath);

            zipStream.Finish();
            zipStream.Close();
        }

        /// 

        /// 递归压缩文件
        /// 
        /// 待压缩的文件或文件夹路径
        /// 打包结果的zip文件路径（类似 D:\WorkSpace\a.zip）,全路径包括文件名和.zip扩展名
        /// 
        private static void CreateZipFiles(string sourceFilePath, ZipOutputStream zipStream, string staticFile)
        {
            Crc32 crc = new Crc32();
            string[] filesArray = Directory.GetFileSystemEntries(sourceFilePath);
            foreach (string file in filesArray)
            {
                if (Directory.Exists(file))                     //如果当前是文件夹，递归
                {
                    CreateZipFiles(file, zipStream, staticFile);
                }

                else                                            //如果是文件，开始压缩
                {
                    FileStream fileStream = File.OpenRead(file);

                    byte[] buffer = new byte[fileStream.Length];
                    fileStream.Read(buffer, 0, buffer.Length);
                    string tempFile = file.Substring(staticFile.LastIndexOf("\\") + 1);
                    ZipEntry entry = new ZipEntry(tempFile);

                    entry.DateTime = DateTime.Now;
                    entry.Size = fileStream.Length;
                    fileStream.Close();
                    crc.Reset();
                    crc.Update(buffer);
                    entry.Crc = crc.Value;
                    zipStream.PutNextEntry(entry);

                    zipStream.Write(buffer, 0, buffer.Length);
                }
            }
        }
        /// 

        /// 压缩文件夹
        /// 
        /// 
        /// 
        /// 压缩率0（无压缩）9（压缩率最高）
        public static void ZipDir(string dirToZip, string zipedFileName, int compressionLevel = 4)
        {
            if (Path.GetExtension(zipedFileName) != ".zip")
            {
                zipedFileName = zipedFileName + ".zip";
            }
            using (var zipoutputstream = new ZipOutputStream(File.Create(zipedFileName)))
            {
                zipoutputstream.SetLevel(compressionLevel);
                Crc32 crc = new Crc32();
                Hashtable fileList = GetAllFies(dirToZip);
                foreach (DictionaryEntry item in fileList)
                {
                    FileStream fs = new FileStream(item.Key.ToString(), FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                    byte[] buffer = new byte[fs.Length];
                    fs.Read(buffer, 0, buffer.Length);
                    // ZipEntry entry = new ZipEntry(item.Key.ToString().Substring(dirToZip.Length + 1));
                    ZipEntry entry = new ZipEntry(Path.GetFileName(item.Key.ToString()))
                    {
                        DateTime = (DateTime)item.Value,
                        Size = fs.Length
                    };
                    fs.Close();
                    crc.Reset();
                    crc.Update(buffer);
                    entry.Crc = crc.Value;
                    zipoutputstream.PutNextEntry(entry);
                    zipoutputstream.Write(buffer, 0, buffer.Length);
                }
            }
        }

        /// 
  
        /// 获取所有文件  
        /// 
  
        ///   
        public static Hashtable GetAllFies(string dir)
        {
            Hashtable filesList = new Hashtable();
            DirectoryInfo fileDire = new DirectoryInfo(dir);
            if (!fileDire.Exists)
            {
                throw new FileNotFoundException("目录:" + fileDire.FullName + "没有找到!");
            }

            GetAllDirFiles(fileDire, filesList);
            GetAllDirsFiles(fileDire.GetDirectories(), filesList);
            return filesList;
        }

        /// 
  
        /// 获取一个文件夹下的所有文件夹里的文件  
        /// 
  
        ///   
        ///   
        public static void GetAllDirsFiles(IEnumerable dirs, Hashtable filesList)
        {
            foreach (DirectoryInfo dir in dirs)
            {
                foreach (FileInfo file in dir.GetFiles("*.*"))
                {
                    filesList.Add(file.FullName, file.LastWriteTime);
                }
                GetAllDirsFiles(dir.GetDirectories(), filesList);
            }
        }

        /// 
  
        /// 获取一个文件夹下的文件  
        /// 
  
        /// 目录名称
        /// 文件列表HastTable  
        public static void GetAllDirFiles(DirectoryInfo dir, Hashtable filesList)
        {
            foreach (FileInfo file in dir.GetFiles("*.*"))
            {
                filesList.Add(file.FullName, file.LastWriteTime);
            }
        }

        /// 
  
        /// 功能：解压zip格式的文件。  
        /// 
  
        /// 压缩文件路径  
        /// 解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹  
        /// 解压是否成功  
        public static void UnZip(string zipFilePath, string unZipDir)
        {
            if (zipFilePath == string.Empty)
            {
                throw new Exception("压缩文件不能为空！");
            }
            if (!File.Exists(zipFilePath))
            {
                throw new FileNotFoundException("压缩文件不存在！");
            }
            //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹  
            if (unZipDir == string.Empty)
                unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
            if (!unZipDir.EndsWith("/"))
                unZipDir += "/";
            if (!Directory.Exists(unZipDir))
                Directory.CreateDirectory(unZipDir);

            using (var s = new ZipInputStream(File.OpenRead(zipFilePath)))
            {

                ZipEntry theEntry;
                while ((theEntry = s.GetNextEntry()) != null)
                {
                    string directoryName = Path.GetDirectoryName(theEntry.Name);
                    string fileName = Path.GetFileName(theEntry.Name);
                    if (!string.IsNullOrEmpty(directoryName))
                    {
                        Directory.CreateDirectory(unZipDir + directoryName);
                    }
                    if (directoryName != null && !directoryName.EndsWith("/"))
                    {
                    }
                    if (fileName != String.Empty)
                    {
                        using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
                        {

                            int size;
                            byte[] data = new byte[2048];
                            while (true)
                            {
                                size = s.Read(data, 0, data.Length);
                                if (size > 0)
                                {
                                    streamWriter.Write(data, 0, size);
                                }
                                else
                                {
                                    break;
                                }
                            }
                        }
                    }
                }
            }
        }

        /// 

        /// 压缩单个文件
        /// 
        /// 被压缩的文件名称(包含文件路径)，文件的全路径
        /// 压缩后的文件名称(包含文件路径)，保存的文件名称
        /// 压缩率0（无压缩）到 9（压缩率最高）
        public static void ZipFile(string filePath, string zipedFileName, int compressionLevel = 9)
        {
            // 如果文件没有找到，则报错 
            if (!File.Exists(filePath))
            {
                throw new FileNotFoundException("文件：" + filePath + "没有找到！");
            }
            // 如果压缩后名字为空就默认使用源文件名称作为压缩文件名称
            if (string.IsNullOrEmpty(zipedFileName))
            {
                string oldValue = Path.GetFileName(filePath);
                if (oldValue != null)
                {
                    zipedFileName = filePath.Replace(oldValue, "") + Path.GetFileNameWithoutExtension(filePath) + ".zip";
                }
            }
            // 如果压缩后的文件名称后缀名不是zip，就是加上zip，防止是一个乱码文件
            if (Path.GetExtension(zipedFileName) != ".zip")
            {
                zipedFileName = zipedFileName + ".zip";
            }
            // 如果指定位置目录不存在，创建该目录  C:\Users\yhl\Desktop\大汉三通
            string zipedDir = zipedFileName.Substring(0, zipedFileName.LastIndexOf("\\", StringComparison.Ordinal));
            if (!Directory.Exists(zipedDir))
            {
                Directory.CreateDirectory(zipedDir);
            }
            // 被压缩文件名称
            string filename = filePath.Substring(filePath.LastIndexOf("\\", StringComparison.Ordinal) + 1);
            var streamToZip = new FileStream(filePath, FileMode.Open, FileAccess.Read);
            var zipFile = File.Create(zipedFileName);
            var zipStream = new ZipOutputStream(zipFile);
            var zipEntry = new ZipEntry(filename);
            zipStream.PutNextEntry(zipEntry);
            zipStream.SetLevel(compressionLevel);
            var buffer = new byte[2048];
            Int32 size = streamToZip.Read(buffer, 0, buffer.Length);
            zipStream.Write(buffer, 0, size);
            try
            {
                while (size < streamToZip.Length)
                {
                    int sizeRead = streamToZip.Read(buffer, 0, buffer.Length);
                    zipStream.Write(buffer, 0, sizeRead);
                    size += sizeRead;
                }
            }
            finally
            {
                zipStream.Finish();
                zipStream.Close();
                streamToZip.Close();
            }
        }

        /// 
 
        /// 压缩单个文件 
        /// 
 
        /// 要进行压缩的文件名，全路径 
        /// 压缩后生成的压缩文件名,全路径 
        public void ZipFile(string fileToZip, string zipedFile)
        {
            // 如果文件没有找到，则报错 
            if (!File.Exists(fileToZip))
            {
                throw new FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!");
            }
            using (FileStream fileStream = File.OpenRead(fileToZip))
            {
                byte[] buffer = new byte[fileStream.Length];
                fileStream.Read(buffer, 0, buffer.Length);
                fileStream.Close();
                using (FileStream zipFile = File.Create(zipedFile))
                {
                    using (ZipOutputStream zipOutputStream = new ZipOutputStream(zipFile))
                    {
                        // string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\\") + 1);
                        string fileName = Path.GetFileName(fileToZip);
                        var zipEntry = new ZipEntry(fileName)
                        {
                            DateTime = DateTime.Now,
                            IsUnicodeText = true
                        };
                        zipOutputStream.PutNextEntry(zipEntry);
                        zipOutputStream.SetLevel(5);
                        zipOutputStream.Write(buffer, 0, buffer.Length);
                        zipOutputStream.Finish();
                        zipOutputStream.Close();
                    }
                }
            }
        }

        /// 

        /// 压缩多个目录或文件
        /// 
        /// 待压缩的文件夹或者文件，全路径格式,是一个集合
        /// 压缩后的文件名，全路径格式
        /// 压宿密码
        /// 
        public static bool ZipManyFilesOrDictorys(IEnumerable folderOrFileList, string zipedFile, string password)
        {
            bool res = true;
            using (var s = new ZipOutputStream(File.Create(zipedFile)))
            {
                s.SetLevel(6);
                if (!string.IsNullOrEmpty(password))
                {
                    s.Password = password;
                }
                foreach (string fileOrDir in folderOrFileList)
                {
                    //是文件夹
                    if (Directory.Exists(fileOrDir))
                    {
                        res = ZipFileDictory(fileOrDir, s, "");
                    }
                    else
                    {
                        //文件
                        res = ZipFileWithStream(fileOrDir, s);
                    }
                }
                s.Finish();
                s.Close();
                return res;
            }
        }

        /// 

        /// 带压缩流压缩单个文件
        /// 
        /// 要进行压缩的文件名
        /// 
        /// 
        private static bool ZipFileWithStream(string fileToZip, ZipOutputStream zipStream)
        {
            //如果文件没有找到，则报错
            if (!File.Exists(fileToZip))
            {
                throw new FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!");
            }
            //FileStream fs = null;
            FileStream zipFile = null;
            ZipEntry zipEntry = null;
            bool res = true;
            try
            {
                zipFile = File.OpenRead(fileToZip);
                byte[] buffer = new byte[zipFile.Length];
                zipFile.Read(buffer, 0, buffer.Length);
                zipFile.Close();
                zipEntry = new ZipEntry(Path.GetFileName(fileToZip));
                zipStream.PutNextEntry(zipEntry);
                zipStream.Write(buffer, 0, buffer.Length);
            }
            catch
            {
                res = false;
            }
            finally
            {
                if (zipEntry != null)
                {
                }

                if (zipFile != null)
                {
                    zipFile.Close();
                }
                GC.Collect();
                GC.Collect(1);
            }
            return res;

        }

        /// 

        /// 递归压缩文件夹方法
        /// 
        /// 
        /// 
        /// 
        private static bool ZipFileDictory(string folderToZip, ZipOutputStream s, string parentFolderName)
        {
            bool res = true;
            ZipEntry entry = null;
            FileStream fs = null;
            Crc32 crc = new Crc32();
            try
            {
                //创建当前文件夹
                entry = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
                s.PutNextEntry(entry);
                s.Flush();
                //先压缩文件，再递归压缩文件夹
                var filenames = Directory.GetFiles(folderToZip);
                foreach (string file in filenames)
                {
                    //打开压缩文件
                    fs = File.OpenRead(file);
                    byte[] buffer = new byte[fs.Length];
                    fs.Read(buffer, 0, buffer.Length);
                    entry = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/" + Path.GetFileName(file)));
                    entry.DateTime = DateTime.Now;
                    entry.Size = fs.Length;
                    fs.Close();
                    crc.Reset();
                    crc.Update(buffer);
                    entry.Crc = crc.Value;
                    s.PutNextEntry(entry);
                    s.Write(buffer, 0, buffer.Length);
                }

            }
            catch
            {
                res = false;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                }
                if (entry != null)
                {
                }
                GC.Collect();
                GC.Collect(1);
            }
            var folders = Directory.GetDirectories(folderToZip);
            foreach (string folder in folders)
            {
                if (!ZipFileDictory(folder, s, Path.Combine(parentFolderName, Path.GetFileName(folderToZip))))
                {
                    return false;
                }
            }
            return res;
        }

        public static void BytesToFile(byte[] bytes, string filePath, string filename)
        {
            //生成解压目录
            Directory.CreateDirectory(filePath);

            using (MemoryStream ms = new MemoryStream(bytes))
            {
                using (FileStream fs = new FileStream(filename, FileMode.Create, FileAccess.Write))
                {
                    ms.WriteTo(fs);
                }
            }
        }

    }
}

using InsSysLib.Core.Util;
using System;
using System.IO;
using System.Web;

namespace InsHR.WebUI
{
    public partial class DownLoadFile : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string filepath = UrlParams.GetParam("FILE_PATH");
            string filePath = filepath.Replace("|", "\\");
            string filename = Path.GetFileName(filePath);
            FileStream iStream = null;
            try
            {

                iStream = new System.IO.FileStream(filePath, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read);
                long dataToRead;
                int length;
                byte[] buffer = new Byte[100000000];
                dataToRead = iStream.Length;
                Response.Clear();
                Response.ClearHeaders();
                Response.ClearContent();
                Response.ContentType = "application/octet-stream";
                Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8));  //下载的时候下载原来的文件名称
                while (dataToRead > 0)
                {
                    if (Response.IsClientConnected)
                    {
                        length = iStream.Read(buffer, 0, 100000000);
                        Response.OutputStream.Write(buffer, 0, length);
                        Response.Flush();
                        dataToRead = dataToRead - length;
                    }
                    else
                    {
                        dataToRead = -1;
                    }
                }
                //POIExcelUtils.DeleteDir(filePath);

            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
            finally
            {
                if (iStream != null)
                {
                    iStream.Close();
                    if (File.Exists(filePath))
                    {
                        //File.Delete(filePath);//删除临时打包压缩文件
                        POIExcelUtils.DeleteDir(filePath);//删除指定目录下的所有文件及其文件夹
                    }
                }
                Response.End();
               
            }

        }
    }
}

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DownLoadFile.aspx.cs" Inherits="InsHR.WebUI.DownLoadFile" %>