Java Modify session Default time

Address: http://blog.sina.com.cn/s/blog_4d19b6210100h04c.html

The session has a default expiration time in the program, where the default time for Tomcat is 30 minutes, so we can manually set the expiration time of the session as needed, and here are three ways to set the expiration time of the session:

1. Set in <session-config> in TOMCAT-->CONF-->CONF/WEB.XM:

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

2. Define in the Web.xml of the project:

<session-config>
<session-timeout>20</session-timeout>
</session-config>

Note: 20 set expiration time to 20 minutes test pass

3. Define in the program:

Session.setmaxinactiveinterval (30*60);

Set the unit to seconds, set to-1 never expires