Asp.Net MVC HttpContext.User.Identity.Name为空

Question

做单点登录的时候遇到的问题.
Hashtable singleOnline = (Hashtable)filterContext.HttpContext.Application["Online"];
// 判断当前SessionID是否存在
if (singleOnline != null && singleOnline.ContainsKey(filterContext.HttpContext.User.Identity.Name))
{
if (!singleOnline[filterContext.HttpContext.User.Identity.Name].Equals(filterContext.HttpContext.Session.SessionID))
{
filterContext.Result = new ContentResult() { Content = "if(confirm('你的账号已在别处登陆，是否返回登陆页面重新登陆？')){window.location.href='/Authentication/Login';}else{window.close();}" };
}
}

Answer 1

https://blog.csdn.net/fengxingxiake11/article/details/49992773?utm_source=blogxgwz4