为了实现保持登录状态,可以用cookie来解决这一问题
假设过期时间为30分钟,校验发生在服务器,借助过滤器,可以这样写
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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);
}
}
}
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但是页面直接跳转了,也没有一个提示,显得不是很友好,可以这样
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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('登录超时,请重新登录');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);
}
}
}
}
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但是,假如是ajax请求呢?
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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('登录超时,请重新登录');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);
}
}
}
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以上所述是小编给大家介绍的Asp.net 中mvc 实现超时弹窗后跳转功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://www.cnblogs.com/cheesebar/archive/2017/02/10/6386479.html