實現逾時彈窗後跳轉功能的asp代碼執行個體

這篇文章主要介紹了Asp.net 中mvc 實現逾時彈窗後跳轉功能,非常不錯，具有參考借鑒價值，需要的朋友可以參考下

為了實現保持登入狀態,可以用cookie來解決這一問題

假設到期時間為30分鐘,校正發生在伺服器,藉助過濾器,可以這樣寫

 public class PowerFilter : AuthorizeAttribute  {    public override void OnAuthorization(AuthorizationContext filterContext)    {      var cookie = HttpContext.Current.Request.Cookies["loginInfo"];      if(null == cookie)      {        filterContext.Result = new RedirectResult("/admin/login/index");      }      else      {        cookie.Expires = DateTime.Now.AddMinutes(30);        HttpContext.Current.Response.Cookies.Remove("loginInfo");        HttpContext.Current.Response.Cookies.Add(cookie);      }    }  }

但是頁面直接跳轉了,也沒有一個提示,顯得不是很友好,可以這樣

public class PowerFilter : AuthorizeAttribute  {    public override void OnAuthorization(AuthorizationContext filterContext)    {      var cookie = HttpContext.Current.Request.Cookies["loginInfo"];      if(null == cookie)      {        filterContext.Result = new ContentResult()        {          Content = string          .Format("<script>alert('登入逾時,請重新登入');location.href='{0}'</script>","/admin/login/index")        };      }      else      {        cookie.Expires = DateTime.Now.AddMinutes(30);        HttpContext.Current.Response.Cookies.Remove("loginInfo");        HttpContext.Current.Response.Cookies.Add(cookie);      }    }  }}

但是,假如是ajax請求呢?

public class PowerFilter : AuthorizeAttribute  {    public override void OnAuthorization(AuthorizationContext filterContext)    {      var cookie = HttpContext.Current.Request.Cookies["loginInfo"];      if(null == cookie)      {        if(!filterContext.HttpContext.Request.IsAjaxRequest())        {          filterContext.Result = new ContentResult()          {            Content = string                 .Format("<script>alert('登入逾時,請重新登入');location.href='{0}'</script>","/admin/login/index")          };        }        else        {          filterContext.Result = new JsonResult()          {            Data = new { logoff = true,logurl = "/admin/login/index" },            ContentType = null,            ContentEncoding = null,            JsonRequestBehavior = JsonRequestBehavior.AllowGet          };        }      }      else      {        cookie.Expires = DateTime.Now.AddMinutes(30);        HttpContext.Current.Response.Cookies.Remove("loginInfo");        HttpContext.Current.Response.Cookies.Add(cookie);      }    }  }