void Application_BeginRequest(object sender, EventArgs e)  
  {
    try { 
      string session_param_name = "ASPSESSID"; 
      string session_cookie_name = "ASP.NET_SessionId"; 
      if (HttpContext.Current.Request.Form[session_param_name] != null) 
      { 
        UpdateCookie(session_cookie_name, HttpContext.Current.Request.Form[session_param_name]); 
      } 
      else if (HttpContext.Current.Request.QueryString[session_param_name] != null) 
      { 
        UpdateCookie(session_cookie_name, HttpContext.Current.Request.QueryString[session_param_name]); 
      } 
    }
    catch { 
    } 

    //此处是身份验证
    try { 
      string auth_param_name = "AUTHID"; 
      string auth_cookie_name = FormsAuthentication.FormsCookieName; 
      if (HttpContext.Current.Request.Form[auth_param_name] != null) 
      { 
        UpdateCookie(auth_cookie_name, HttpContext.Current.Request.Form[auth_param_name]); 
      } 
      else if (HttpContext.Current.Request.QueryString[auth_param_name] != null) 
      { 
        UpdateCookie(auth_cookie_name, HttpContext.Current.Request.QueryString[auth_param_name]);
      } 
    }
    catch { }
  }

  private void UpdateCookie(string cookie_name, string cookie_value)
  {
    HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
    if (null == cookie)
    {
      cookie = new HttpCookie(cookie_name);
    }
    cookie.Value = cookie_value;
    HttpContext.Current.Request.Cookies.Set(cookie);//重新设定请求中的cookie值，将服务器端的session值赋值给它
  }

 　　this.hfAuth.Value = Request.Cookies[FormsAuthentication.FormsCookieName] == null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value;
   

   this.hfAspSessID.Value = Session.SessionID;

  InitUpload: function(auth, AspSessID) {
    $("#uploadify").uploadify({
      uploader: 'Scripts/jqueryplugins/Infrastructure/uploadify.swf',
      script: 'Handlers/ResourceHandler.ashx?OpType=UploadResource',
      cancelImg: 'Scripts/jqueryplugins/Infrastructure/cancel.png',
      queueID: 'fileQueue',
      sizeLimit: '21480000000',
      wmode: 'transparent ',
      fileExt: '*.zip,*.jpg, *.rar,*.doc,*.docx,*.xls,*.xlsx,*.png,*.pptx,*.ppt,*.pdf,*.swf,*.txt',
      auto: false,
      multi: true,
      scriptData: { ASPSESSID: AspSessID, AUTHID: auth },

if (this.LoginInfo == null)
{
  // 解决uploadify兼容火狐谷歌浏览器上传问题
  // 但是，此代码使系统有安全隐患，Flash程序请求该系统不需要验证
  // 要解决此安全隐患，需要Flash程序传用户名和密码过来验证，但是该用户名和密码不能写在前端以便被不法用户看到
  if (Request.UserAgent == "Shockwave Flash")
  {
    return;
  }
  else
  {
    filterContext.Result = RedirectToAction("LoginAgain", "Account", new { Area = "Auth" });
    return;
  }
}

$(function () {
  $.ajax({
    url: "/Auth/Account/GetUserNamePwd",
    type: "POST",
    dataType: "json",
    data: {},
    success: function (data) {
      $("#uploadify").uploadify({
        height: 25,
        width: 100,
        swf: '/Content/Plugins/UploadifyJs/uploadify.swf',
        uploader: 'UploadFile',
        formData: {
          userName: data.data.userName, //ajax获取的用户名
          pwd: data.data.pwd //ajax获取的密码
        },
        buttonText: '选择文件上传',
        fileSizeLimit: '4MB',
        fileTypeDesc: '文件',
        fileTypeExts: '*.*',
        queueID: 'fileQueue',
        multi: true,
        onUploadSuccess: function (fileObj, data, response) {
          var d = eval("(" + data + ")");
          $(".uploadify-queue-item").find(".data").html("  上传完成");
          $("#url").val(d.url);
          $("#name").val(d.name);
        },
        onUploadError: function (event, ID, fileObj, errorObj) {
          if (event.size > 4 * 1024 * 1024) {
            alert('超过文件上传大小限制（4M）！');
            return;
          }
          alert('上传失败');
        }
      }); //end uploadify
    }
  });
});    //end $

......
if (this.LoginInfo == null)
{ 
  // 解决uploadify兼容火狐谷歌浏览器上传问题
  // 但是，此代码使系统有安全隐患，Flash程序请求该系统不需要验证
  // 要解决此安全隐患，需要Flash程序传用户名和密码过来验证，但是该用户名和密码不能写在前端以便被不法用户看到
  if (Request.UserAgent == "Shockwave Flash")
  {
    string userName = Request.Params["userName"];
    string pwd = Request.Params["pwd"];
    if (!string.IsNullOrWhiteSpace(userName) && !string.IsNullOrWhiteSpace(pwd))
    {
      AuthDAL authDAL = new AuthDAL();
      sys_user user = authDAL.GetUserInfoByName(userName);
      if (user != null && user.password == pwd)
      {
        return;
      }
    }
  }
  else
  {
    filterContext.Result = RedirectToAction("LoginAgain", "Account", new { Area = "Auth" });
    return;
  }
}
......

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">


<%
 String syscontext = request.getContextPath();

%>

<% 
  String path = request.getContextPath(); 
  String basePath = request.getScheme() + "://" 
      + request.getServerName() + ":" + request.getServerPort() 
      + path; 
  
  String sessionid = session.getId();
  
%>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" type="text/css" href="<%=syscontext %>/webcontent/resourceManage/wallpapaer/uploadify/uploadify.css" />
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="<%=syscontext %>/webcontent/resourceManage/wallpapaer/uploadify/jquery.uploadify-3.1.min.js"></script>

<!-- 注意我使用的jquery uploadify版本-->


<script type="text/javascript">
//用来计算上传成功的图片数
var successCount = 1;

$(function() {
 var uploadUrl = '<%=basePath%>/uploadresource.do;jsessionid=<%=sessionid%>?Func=uploadwallpaper2Dfs';
 
 var swfUrl2 = "<%=basePath%>/webcontent/resourceManage/wallpapaer/uploadify/uploadify.swf";
  $('#file_upload').uploadify({
    'swf'   : swfUrl2,
    'uploader' : uploadUrl,
    // Put your options here
    'removeCompleted' : false,
    'auto' : false,
    'method'  : 'post',
    'onUploadSuccess' : function(file, data, response) {
      add2SuccessTable(data);
    }
  });
});



/**
 * 将成功上传的图片展示出来
 */
function add2SuccessTable(data){
 var jsonObj = JSON.parse(data);
 for(var i =0; i < jsonObj.length; i++){
  var oneObj = jsonObj[i];
  var fileName = oneObj.fileName;
  var imgUrl = oneObj.imgUrl;
  
  var td_FileName = "<td>"+fileName+"</td>";
  var td_imgUrl = "<td><img width='150' src='"+imgUrl+"'></img></td>";
  var oper = "<td><input type='button' value='删除' onclick='deleteRow("+successCount+")'/></td>";
  var tr = "<tr id='row"+successCount+"'>"+successCount+td_FileName+td_imgUrl+oper+"</tr>";
  
  $("#successTable").append(tr);
  
  successCount++;
 }
 
}



function deleteRow(i){
 $("#row"+i).empty();
 $("#row"+i).remove();
}
</script>


<title>Insert title here</title>
</head>
<body>
<input type="file" name="file_upload" id="file_upload" />
 <p> 
  <a href="javascript:$('#file_upload').uploadify('upload','*')">开始上传</a>  
  <a href="javascript:$('#file_upload').uploadify('cancel', '*')">取消所有上传</a>
 </p> 
<table id="successTable">
 <tr>
  <td>文件名</td>
  <td>图片</td>
  <td>操作</td>
 </tr>
</table>
</body>
</html>