//Webside_load导出网站
 function Webside_load(sID, iWebTemplateID) {//alert(0);
   //alert(sID); alert(iWebTemplateID);
   //被赋值的目录：就是模板ID下的文件夹以及文件
   sTartDir = "http://www.cnblogs.com/uploadfile/webTemplate/" + iWebTemplateID;
   //目标目录：就是作品ID下
   sEndDir = "http://www.cnblogs.com/uploadfile/showweb/" + sID + "/";
   //alert(sourceDir); alert(targetDir);
 
   var variable = ["sTartDir", "sEndDir"];
   var value = [sTartDir, sEndDir]; //alert(value);
   Request("getWebList", variable, value, getBack, WebUrl + "http://www.cnblogs.com/copy.ashx", svrNamespace);
 
 }
 function getBack() {
   var xmlhttp = xmlHttpRequest;
   var Result = xmlhttp.responseText;
   alert(Result);
 }

<%@ WebHandler Language="C#" Class="copy" %>
 
 using System;
 using System.Web;
 using System.IO;
 
 public class copy : IHttpHandler
 {
   //采用递归的方式遍历，文件夹和子文件中的所有文件。
   public void ProcessRequest(HttpContext context)
   {
     HttpRequest Request = context.Request;
     HttpResponse Response = context.Response;
     HttpServerUtility Server = context.Server;
     //指定输出头和编码
     context.Response.ContentType = "text/html";
     Response.Charset = "utf-8";
 
     HttpFileCollection fs = HttpContext.Current.Request.Files;
     
     string sTartDir = Request.Form["sTartDir"];
     string sEndDir = Request.Form["sEndDir"];
     sTartDir = System.Web.HttpContext.Current.Server.MapPath(sTartDir);
     sEndDir = System.Web.HttpContext.Current.Server.MapPath(sEndDir);
     //Test
     //string sTartDir = System.Web.HttpContext.Current.Server.MapPath("../uploadfile/webTemplate/2");
     //string sEndDir = System.Web.HttpContext.Current.Server.MapPath("../uploadfile/showweb/2012082700000001/");
     MyDirectory_Copy(sTartDir, sEndDir);
     
     Response.Write("成功导出！");
   }
   
   static void MyDirectory_Copy(string sTartDir, string sEndDir)
   {
     //判断两个目录是否都是存在的
     if (!Directory.Exists(sTartDir))
       return;
     if (!Directory.Exists(sEndDir))
       return;
 
     //获取文件夹名字
     string sTarteFolderName = sTartDir.Replace(Directory.GetParent(sTartDir).ToString(), "").Replace(Path.DirectorySeparatorChar.ToString(), "");
     //判断是否该文件夹赋值成功
     if (sTartDir == sEndDir + sTarteFolderName)
       return;
 
     //要复制到的路径 
     string endPath = sEndDir + Path.DirectorySeparatorChar.ToString() + sTarteFolderName;
     if (Directory.Exists(endPath))
     {
       Directory.Delete(endPath, true);
     }
 
     Directory.CreateDirectory(endPath);
 
     //复制文件 
     string[] files = Directory.GetFiles(sTartDir);
     for (int i = 0; i < files.Length; i++)
     {
       File.Copy(files[i], endPath + Path.DirectorySeparatorChar.ToString() + Path.GetFileName(files[i]));
     }
     //复制目录 
     string[] dires = Directory.GetDirectories(sTartDir);
     for (int j = 0; j < dires.Length; j++)
     {
       MyDirectory_Copy(dires[j], endPath);
     }
   } 
 
  
 
   public bool IsReusable
   {
     get
     {
       return false;
     }
   }  
 }