modules/web/ignite-appserver-test/src/main/webapp/WEB-INF/web.xml

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<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

    <listener>
        <listener-class>org.apache.ignite.startup.servlet.ServletContextListenerStartup</listener-class>
    </listener>

    <filter>
        <filter-name>IgniteWebSessionsFilter</filter-name>
        <filter-class>org.apache.ignite.cache.websession.WebSessionFilter</filter-class>
    </filter>

    <!-- You can also specify a custom URL pattern. -->
    <filter-mapping>
        <filter-name>IgniteWebSessionsFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- Specify Ignite configuration (relative to META-INF folder or Ignite_HOME). -->
    <context-param>
        <param-name>IgniteConfigurationFilePath</param-name>
        <param-value>config/default-config.xml </param-value>
    </context-param>

    <!-- Specify the name of Ignite cache for web sessions. -->
    <context-param>
        <param-name>IgniteWebSessionsCacheName</param-name>
        <param-value>atomic</param-value>
    </context-param>

</web-app>