我有一个asp.net网站,当会话超时(比如10分钟)时,我需要一个弹出层/提示框。弹出层会显示您的帐户会话因为不活动而将要过期,并提供继续会话或注销的选项。
我在网上看到了不同的方法来处理这个问题,但什么是最好/适当的方法?如果弹出层打开时间太长,我是否需要设置额外的超时时间?
<script type="text/javascript">
var sessionTimeoutWarning = "<%= System.Configuration.ConfigurationManager.AppSettings["SessionWarning"].ToString()%>";
var sessionTimeout = "<%= Session.Timeout %>";
var sTimeout = parseInt(sessionTimeoutWarning) * 60 * 1000;
setTimeout('SessionWarning()', sTimeout);
function SessionWarning() {
var message = "Your session will expire in another " +
(parseInt(sessionTimeout) - parseInt(sessionTimeoutWarning)) +
" mins! Please Save the data before the session expires";
alert(message);
}
</script>
我看了Pranay Rana的文章,觉得总体思路不错,但是代码需要精简优化。这是我的版本。如需查看平板电脑/移动设备问题,请参见以下内容:
<script language="javascript" type="text/javascript">
var minutesForWarning = 4;
var sessionTimeout = parseInt("@Session.Timeout"); // razor syntax, otherwise use <%= Session.Timeout %>
var showWarning = true;
function SessionWarning() {
showWarning = false;
alert("Your session will expire in " + minutesForWarning + " mins! Please refresh page to continue working.");
// leave a second for redirection fct to be called if expired in the meantime
setTimeout(function () { showWarning = true; }, 1000);
}
function RedirectToWelcomePage() {
if (showWarning)
alert("Session expired. You will be redirected to welcome page.");
document.getElementById('logoutForm').submit();
// window.location = "../Welcome.aspx"; // alternatively use window.location to change page
}
setTimeout('SessionWarning()', (sessionTimeout - minutesForWarning) * 60 * 1000);
setTimeout('RedirectToWelcomePage()', sessionTimeout * 60 * 1000);
</script>
在平板电脑或移动设备上,您不能依赖setTimeout,因为当设备被锁定或浏览器不活动时,JavaScript执行会被暂停。相反,我正在进行定期检查(在我的情况下,我认为每10秒足够):
<script language="javascript" type="text/javascript">
function addMinutes(date, minutes) {
return new Date(date.getTime() + minutes * 60 * 1000);
}
function remainingMinutes(date) {
return Math.round((date - (new Date()).getTime()) / 60 / 1000);
}
var minutesForWarning = 5;
var sessionTimeout = parseInt("@Session.Timeout");
var showWarning = true;
var showRedirect = true;
var timeToWarn = addMinutes(new Date(), sessionTimeout - minutesForWarning);
var timeToEnd = addMinutes(new Date(), sessionTimeout);
function CheckTime() {
if (showWarning && new Date() > timeToWarn && new Date() < timeToEnd) {
showRedirect = false;
showWarning = false;
alert("Your session will expire in " + remainingMinutes(timeToEnd)) + " mins! Please refresh page to continue working.");
}
if (new Date() > timeToEnd) {
if (showRedirect)
alert("Session expired. You will be redirected to welcome page ");
document.getElementById('logoutForm').submit();
// window.location = "../Welcome.aspx"; // alternatively use window.location to change page
}
if (showRedirect == false)
showRedirect = true;
}
setInterval(CheckTime, 10000);
</script>
(function ($, undefined) {
if (!window.session) {
window.session = {
monitorAuthenticationTimeout: function (redirectUrl, pingUrl, warningDuration, cushion) {
// If params not specified, use defaults.
redirectUrl = redirectUrl || "~/Account/Login";
pingUrl = pingUrl || "~/Account/Ping";
warningDuration = warningDuration || 45000;
cushion = cushion || 4000;
var timeoutStartTime,
timeout,
timer,
popup,
countdown,
pinging;
var updateCountDown = function () {
var secondsRemaining = Math.floor((timeout - ((new Date()).getTime() - timeoutStartTime)) / 1000),
min = Math.floor(secondsRemaining / 60),
sec = secondsRemaining % 60;
countdown.text((min > 0 ? min + ":" : "") + (sec < 10 ? "0" + sec : sec));
// If timeout hasn't expired, continue countdown.
if (secondsRemaining > 0) {
timer = window.setTimeout(updateCountDown, 1000);
}
// Else redirect to login.
else {
window.location = redirectUrl;
}
};
var showWarning = function () {
if (!popup) {
popup = $(
"<div style=\"text-align:center; padding:2em; color: black; font-color: black; background-color:white; border:2px solid red; position:absolute; left: 50%; top:50%; width:300px; height:120px; margin-left:-150px; margin-top:-90px\">" +
"<span style=\"font-size:1.4em; font-weight:bold;\">INACTIVITY ALERT!</span><br/><br/>" +
"You will be automatically logged off.<br/><br/>" +
"<span style=\"font-size:1.4em; font-weight:bold;\" id=\"countDown\"></span><br/><br/>" +
"Click anywhere on the page to continue working." +
"</div>")
.appendTo($("body"));
countdown = popup.find("#countDown");
}
popup.show();
updateCountDown();
};
var resetTimeout = function () {
// Reset timeout by "pinging" server.
if (!pinging) {
pinging = true;
var pingTime = (new Date()).getTime();
$.ajax({
type: "GET",
dataType: "json",
url: pingUrl,
}).success(function (result) {
// Stop countdown.
window.clearTimeout(timer);
if (popup) {
popup.hide();
}
// Subract time it took to do the ping from
// the returned timeout and a little bit of
// cushion so that client will be logged out
// just before timeout has expired.
timeoutStartTime = (new Date()).getTime();
timeout = result.timeout - (timeoutStartTime - pingTime) - cushion;
// Start warning timer.
timer = window.setTimeout(showWarning, timeout - warningDuration);
pinging = false;
});
}
};
// If user interacts with browser, reset timeout.
$(document).on("mousedown mouseup keydown keyup", "", resetTimeout);
$(window).resize(resetTimeout);
// Start fresh by reseting timeout.
resetTimeout();
},
};
}
})(jQuery);
window.session.monitorAuthenticationTimeout(
"/Account/Login", // You could also use "@FormsAuthentication.LoginUrl" in Razor.
"/Account/Ping");
public JsonResult Ping()
{
return Json(new {
timeout = FormsAuthentication.Timeout.TotalMilliseconds
},
JsonRequestBehavior.AllowGet);
}
<sessionState mode="StateServer" cookieless="false" timeout="180"></sessionState>
。如何分配var sessionTimeoutWarning
? - SearchForKnowledge