Session expiration time setting

1. Web container settings

For example, the daily use of tomcat is set in web.xml

<session-config>

<session-timeout>15</session-timeout>

</session-config>

2. Project webxml

<session-config>

<session-timeout>15</session-timeout>

</session-config>

3. Set in Java code

session.setMaxInactiveInterval(30*60);//in seconds

The priority is 1<2<3

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