用ICSharpCode.SharpZipLib.Zip实现下载整个文件目录
using ICSharpCode.SharpZipLib.Zip;
using System.IO;
public partial class Default2 : System.Web.UI.Page
{
ZipOutputStream zos = null;
String strBaseDir = "";
protected void Page_Load(object sender, EventArgs e)
{
dlZipDir(Server.MapPath("test"), "test");
//网站根目录建立一个test文件夹,里面随便放几个文件进去,子文件夹也行
}
protected void dlZipDir(string strPath, string strFileName)
{
MemoryStream ms = null;
Response.ContentType = "application/octet-stream";
strFileName = HttpUtility.UrlEncode(strFileName).Replace('+', ' ');
Response.AddHeader("Content-Disposition", "attachment; filename=" + strFileName + ".zip");
ms = new MemoryStream();
zos = new ZipOutputStream(ms);
strBaseDir = strPath + "\\";
addZipEntry(strBaseDir);
zos.Finish();
zos.Close();
Response.Clear();
Response.BinaryWrite(ms.ToArray());
Response.End();
}
protected void addZipEntry(string PathStr)
{
DirectoryInfo di = new DirectoryInfo(PathStr);
foreach (DirectoryInfo item in di.GetDirectories())
{
addZipEntry(item.FullName);
}
foreach (FileInfo item in di.GetFiles())
{
FileStream fs = File.OpenRead(item.FullName);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
string strEntryName = item.FullName.Replace(strBaseDir, "");
ZipEntry entry = new ZipEntry(strEntryName);
zos.PutNextEntry(entry);
zos.Write(buffer, 0, buffer.Length);
fs.Close();
}
}
}
用递归的方式，调用addZipEntry遍历目标文件夹中所有的文件或子文件夹，将压缩数据暂时放入MemoryStream内存流中，然后用Response.BinaryWrite输出到页面
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