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
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
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);
}
}
}
}
但是,假如是ajax请求呢?
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);
}
}
}
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脚本之家网站的支持！
