asp.net 文件打包下载

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使用的是ICSharpCode.SharpZipLib

下载地址http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Zip;

namespace UploadifyDemo
{
    public partial class DownLoad : System.Web.UI.Page
    {
        //文件夹路径物理路径
        string ObjDirPath = "E:\\ctt\\other\\test";
        string ZipPath =  "downLoad";
        string ZipName = "\\downlaod" + DateTime.Now.ToString("yyyy-MM-dd-hh-mm") + ".zip";

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                //文件打包
                fileToZip();
                //下载打包文件
                Response.Redirect(ZipPath+ZipName);

            }
        }

        ///
        /// 文件打包
        ///
        protected void fileToZip()
        {
            //判断是否存在
            if (Directory.Exists(ObjDirPath))
            {
                //zip保存目录
                if (!Directory.Exists(Server.MapPath(ZipPath)))
                    Directory.CreateDirectory(Server.MapPath(ZipPath));
                //打开文件夹
                DirectoryInfo SourceDir = new DirectoryInfo(ObjDirPath);
                List listFilePath = new List();
                // 得到文件夹里面所有文件路径
                foreach (FileSystemInfo file in SourceDir.GetFileSystemInfos())
                    listFilePath.Add(file.FullName);
                if (listFilePath.Count > 0)
                {
                    ZipOutputStream u = new ZipOutputStream(File.Create(Server.MapPath(ZipPath) + ZipName));  //新建压缩文件流   “ZipOutputStream”
                    foreach (string s in listFilePath)
                    {
                        this.AddZipEntry(s, u, out u);
                    }
                    u.Finish();   //   结束压缩
                    u.Close();
                    //添加下载链接
                    //HtmlAnchor a = new HtmlAnchor();
                    //a.HRef ="downLoad"+ZipName;
                    //a.Title = "点击批量下载";
                    //a.InnerHtml = "批量下载";
                    //this.divC.Controls.Add(a);
                }
            }
        }
        ///
        /// 压缩文件p为客户端传回来的文件列表：文件名+压缩包的名称
        ///
        /// 文件路径名称
        public void ZipFile(string filePath)
        {
            ZipOutputStream u = new ZipOutputStream(File.Create(Server.MapPath(ZipPath) + ZipName));  //新建压缩文件流   “ZipOutputStream”
            this.AddZipEntry(filePath, u, out u);   //向压缩文件流加入内容
            u.Finish();   //   结束压缩
            u.Close();
           
        }
        ///
        /// 添加压缩项目
        ///
        /// p 为需压缩的文件或文件夹
        /// u为现有的源ZipOutputStream
        /// out j为已添加“ZipEntry”的“ZipOutputStream”
        public void AddZipEntry(string p, ZipOutputStream u, out ZipOutputStream j)
        {
            //if (Directory.Exists(p))     //文件夹的处理
            //{
            //    DirectoryInfo di = new DirectoryInfo(p);
            //    foreach (DirectoryInfo tem in di.GetDirectories())     //获取子目录
            //    {
            //        ZipEntry z = new ZipEntry(tem.FullName + "\\ ");   //末尾“\\”用于文件夹的标记
            //        u.PutNextEntry(z);         //此句不可少，否则空目录不会被添加
            //        p = Path .GetFileName (tem.FullName);
            //        this.AddZipEntry(p, u, out u);               //递归
            //    }
            //    foreach (FileInfo temp in di.GetFiles())     //获取此目录的文件
            //    {
            //        p = Path.GetFileName(temp.FullName);
            //        this.AddZipEntry(p, u, out u);             //递归
            //    }
            //}
            if (File.Exists(p))     //文件的处理
            {
                u.SetLevel(9);             //压缩等级
                FileStream f = File.OpenRead(p);
                byte[] b = new byte[f.Length];
                f.Read(b, 0, b.Length);                     //将文件流加入缓冲字节中
                ZipEntry z = new ZipEntry(Path.GetFileName (p));
                u.PutNextEntry(z);                           //为压缩文件流提供一个容器
                u.Write(b, 0, b.Length);   //写入字节
                f.Close();
            }
            j = u;         //返回已添加数据的“ZipOutputStream”
        }
    }
}