HttpResponse输出文件

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm3.aspx.cs" Inherits="布局.WebForm3" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:Button ID ="btnExport" runat ="server" Text ="导出"

            onclick="btnExport_Click" />

    </div>

    </form>

</body>

</html>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.IO;

namespace 布局

{

    public partial class WebForm3 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

        }

        protected void btnExport_Click(object sender, EventArgs e)

        {

            try

            {

                List<FileInfo> fileList = new List<FileInfo>();

                string fileName1 = @"D:\Export\新建 Microsoft Office Excel 工作表1.xlsx";

                string fileName2 = @"D:\Export\新建 Microsoft Office Excel 工作表2.xlsx";

                fileList.Add(new FileInfo(fileName1));

                fileList.Add(new FileInfo(fileName2));

                string fileName = "Export_" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".zip";

                //调用方法

                string targetZipFilePath =Server.MapPath("/")+ "Export\\" + fileName;// 扩展名可随意

                //压缩csv文件

                FileCompression.Compress(fileList, targetZipFilePath, , );

                //把压缩文件输出到浏览器

                System.Web.HttpResponse Response = System.Web.HttpContext.Current.Response;

                Response.Clear();

                Response.ContentType = "application/zip";

                Response.AddHeader("Content-Disposition", "attachment; FileName=" + HttpUtility.UrlEncode(fileName));

                Response.BinaryWrite(File2Bytes(targetZipFilePath));

                Response.OutputStream.Flush();

                Response.OutputStream.Close();

                Response.End();//这句代码不能少，否则可能导致输出的文件数据不全，导致解压时出现压缩格式未知的错误

                //删除产生的压缩文件

                try

                {

                    FileInfo fi1 = new FileInfo(targetZipFilePath);

                    fi1.Delete();

                }

                catch (Exception ex)

                { }

            }

            catch (Exception ex)

            {

                ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "CreateExcelErrorTip", "alert('Export Failed！');", true);

                return;

            }

        }

        public static byte[] File2Bytes(string path)

        {

            if (!System.IO.File.Exists(path))

            {

                return new byte[];

            }

            FileInfo fi = new FileInfo(path);

            byte[] buff = new byte[fi.Length];

            FileStream fs = fi.OpenRead();

            fs.Read(buff, , Convert.ToInt32(fs.Length));

            fs.Close();

            return buff;

        }

    }

}

压缩用到的

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.IO;

using ICSharpCode.SharpZipLib.Zip;

using System.Threading;

namespace 布局

{

    public class FileCompression

    {

        public FileCompression()

        {

            //

            // TODO: 在此处添加构造函数逻辑

            //

        }

        #region 加密、压缩文件

        /// <summary>

        /// 压缩文件

        /// </summary>

        /// <param name="fileNames">要打包的文件列表</param>

        /// <param name="GzipFileName">目标文件名</param>

        /// <param name="CompressionLevel">压缩品质级别（0~9）</param>

        /// <param name="SleepTimer">休眠时间（单位毫秒）</param>

        public static void Compress(List<FileInfo> fileNames, string GzipFileName, int CompressionLevel, int SleepTimer)

        {

            ZipOutputStream s = new ZipOutputStream(File.Create(GzipFileName));

            try

            {

                s.SetLevel(CompressionLevel);   //0 - store only to 9 - means best compression

                foreach (FileInfo file in fileNames)

                {

                    FileStream fs = null;

                    try

                    {

                        fs = file.Open(FileMode.Open, FileAccess.ReadWrite);

                    }

                    catch

                    { continue; }

                    //  方法二，将文件分批读入缓冲区

                    byte[] data = new byte[];

                    int size = ;

                    ZipEntry entry = new ZipEntry(Path.GetFileName(file.Name));

                    entry.DateTime = (file.CreationTime > file.LastWriteTime ? file.LastWriteTime : file.CreationTime);

                    s.PutNextEntry(entry);

                    while (true)

                    {

                        size = fs.Read(data, , size);

                        if (size <= ) break;

                        s.Write(data, , size);

                    }

                    fs.Close();

                    file.Delete();

                    Thread.Sleep(SleepTimer);

                }

            }

            finally

            {

                s.Finish();

                s.Close();

            }

        }

        #endregion

        #region 解密、解压缩文件

        /// <summary>

        /// 解压缩文件

        /// </summary>

        /// <param name="GzipFile">压缩包文件名</param>

        /// <param name="targetPath">解压缩目标路径</param>

        public static void Decompress(string GzipFile, string targetPath)

        {

            //string directoryName = Path.GetDirectoryName(targetPath + "\\") + "\\";

            string directoryName = targetPath;

            if (!Directory.Exists(directoryName)) Directory.CreateDirectory(directoryName);//生成解压目录

            string CurrentDirectory = directoryName;

            byte[] data = new byte[];

            int size = ;

            ZipEntry theEntry = null;

            using (ZipInputStream s = new ZipInputStream(File.OpenRead(GzipFile)))

            {

                while ((theEntry = s.GetNextEntry()) != null)

                {

                    if (theEntry.IsDirectory)

                    {// 该结点是目录

                        if (!Directory.Exists(CurrentDirectory + theEntry.Name)) Directory.CreateDirectory(CurrentDirectory + theEntry.Name);

                    }

                    else

                    {

                        if (theEntry.Name != String.Empty)

                        {

                            //解压文件到指定的目录

                            using (FileStream streamWriter = File.Create(CurrentDirectory + theEntry.Name))

                            {

                                while (true)

                                {

                                    size = s.Read(data, , data.Length);

                                    if (size <= ) break;

                                    streamWriter.Write(data, , size);

                                }

                                streamWriter.Close();

                            }

                        }

                    }

                }

                s.Close();

            }

        }

        #endregion

    }

}

压缩DLL https://pan.baidu.com/s/1kIgRcvvzB5ZybHITsRi4ZQ

巴特西

HttpResponse输出文件

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