ASP.NET jquery uploadify Session丢失
jquery uploadify 2.2
默认情况下,有浏览器在后台取不到Session。如何支持Session?查询了很多网页,方案非原创。
有两步:
一、网站前台
1、在js中写入下面两个变量
var auth = "<% = Request.Cookies[FormsAuthentication.FormsCookieName]==null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value %>"; var ASPSESSID = "<%= Session.SessionID %>";
2、
上传时,将这两个值,传递到后台。
$('#Id').uploadify('settings', 'formData', { 'ASPSESSID': ASPSESSID, 'AUTHID': auth });
二、后台
在Global.asax文件Application_BeginRequest事件中增加下面的方法
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);
}
}
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