3.2版uploadify详细例子（含FF和IE SESSION问题）

最近做项目中碰到上传需要显示进度的问题，通过uploadfiy很好的解决了这个问题不过(IE9出现了按钮不能点击的问题，至今仍找不到良策)

在使用uploadfiy3.2版本时需要下载jquery.tmpl.min.js并引用在Jquery下面

 $("#uploadify").uploadify({
                'uploader': '/LZKS/Handler/BigFileUpLoadHandler.ashx',
                'swf': '/LZKS/Scripts/uploadify/uploadify.swf',
                'cancelImage': '/LZKS/Scripts/uploadify/cancel.png',
                'queueID': 'fileQueue',
                //'auto': false,
                'multi': true,
                'buttonText': '文件上传',
                'formData': { 'ASPSESSID': ASPSESSID, 'AUTHID': auth },
                'onSelect': function (file) {
                    $('#uploadify').uploadifySettings('formData', { 'ASPSESSID': ASPSESSID, 'AUTHID': auth });
                    alert(formDate);
                },
                'onComplete': function (file, data, response) {
                },

                'onQueueComplete': function () {
                    alert("上传完成！");
                    $('#fileQueue').attr('style', 'visibility :hidden');
                },
                'onSelectError': function (file, errorCode, errorMsg) {
                    $('#fileQueue').attr('style', 'visibility :hidden');
                },
                'onUploadStart': function (file) {
                    $('#fileQueue').attr('style', 'top:200px;left:400px;400px;height :400px;visibility :visible');
                }
            });
        });

用uplodify上传还有一个小问题就是在FF下session将会出现丢失的情况 ，在Gobal中加入如下代码来将上传过程中定义的session传至服务器上

 protected void Application_BeginRequest(object sender, EventArgs e)
        {
            /* we guess at this point session is not already retrieved by application so we recreate cookie with the session id... */
            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
            {
            }

            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);
        }

在JS加载前面定义下面两个变量

 var auth = "<% = Request.Cookies[FormsAuthentication.FormsCookieName]==null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value %>";
 var ASPSESSID = "<%= Session.SessionID %>";

Handler文件代码如下：
  public class BigFileUpLoadHandler : IHttpHandler, IRequiresSessionState
    {
        DALFile Fdal = new DALFile();
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            VideoUpLoad(context, CLSOFT.Web.LZKS.Edu.Globe.filename);
        }
        public void VideoUpLoad(HttpContext context, string fileFolderName)
        {
            context.Response.Charset = "utf-8";
            string aaaaaaa=context.Request.QueryString["sessionid"];
            HttpPostedFile file = context.Request.Files["Filedata"];
            string uploadPath = HttpContext.Current.Server.MapPath(UploadFileCommon.CreateDir(fileFolderName));
            if (file != null)
            {
                if (!Directory.Exists(uploadPath))
                {
                    Directory.CreateDirectory(uploadPath);
                }
                Model.ModelFile model = new Model.ModelFile();
                model.File_ID = Guid.NewGuid().ToString();
                model.File_Name = file.FileName;
                model.File_Path = UploadFileCommon.CreateDir(fileFolderName);
                model.File_Size = file.ContentLength;
                model.File_Extension = file.FileName.Substring(file.FileName.LastIndexOf('.') + 1);
                model.File_Date = DateTime.Now;
                model.File_CurrentMan = CLSOFT.Web.LZKS.Edu.Globe.name;
                file.SaveAs(uploadPath + model.File_Name);
            
                List<Model.ModelFile> list = null;
                if (context.Session["File"] == null)
                {
                    list = new List<Model.ModelFile>();
                }
                else
                {
                    list = context.Session["File"] as List<Model.ModelFile>;
                }
                list.Add(model);
                context.Session.Add("File", list);
            }
            else
            {
                context.Response.Write("0");
            } 
        }
//这段代码的功能是将多文件的信息存到context.Session["File"] as List<Model.ModelFileModel.ModelFile>为文件信息类 
//实现批量上传的信息给Session