Show session time remaining

Question

Show session time remaining

Navigation

#1 by (2 votes)
#2 by (1 votes)

4

I'm working with JSP and Servlet. I want to display on the jsp page the time remaining to expire the session I set in my web.xml:

<session-config>
    <session-timeout>30</session-timeout>
</session-config>

Has anyone done anything like this?

session jsp servlet timeout

asked by anonymous 04.02.2015 / 20:38

2 answers

Count in two tables How to display multiple values of a JSON in PHP

score 2 · Answer 1

You can use the getLastAccessedTime() method that returns the time (in milliseconds) of the last session request.

And then, use the getMaxInactiveInterval() method to get the maximum time interval (in seconds) that the container will keep this session open.

Having these two values, just subtract the session time by the time of the last request, remembering that one method returns the value in milliseconds while the other returns in seconds:

Long segundos = session.getMaxInactiveInterval() -
                (System.currentTimeMillis() - session.getLastAccessedTime()) / 1000;

Conversion, for minutes for example, can be done through an object TimeUnit :

long minutosRestantes = TimeUnit.SECONDS.toMinutes(segundos);
out.print(minutosRestantes); // Exibe o tempo (em minutos) restante

score 1 · Answer 2

With the HttpSession class (represented by the implicit object session in the JSP) you can retrieve the last access time using the getLastAccessedTime() method, which will return the time in milliseconds, so you can manipulate it using some class of dates with Calendar or Date