Disable persistent sessions in Tomcat embedded (which includes wicket sessions) (works at least with tomcat 7.0.54)

DisableTomcatPersistentSessions.java

        Tomcat tomcat = new Tomcat() {
            @Override
            public Host getHost() {
                if (host == null) {
                    host = new StandardHost() {
                        @Override
                        public void addChild(final Container child) {
                            if (child instanceof StandardContext) {
                                setupContextWithNonpersistentSessionManager(child);
                            }
                            super.addChild(child);
                        }

                        private void setupContextWithNonpersistentSessionManager(final Container child) {
                            StandardManager mgr = new StandardManager();
                            mgr.setPathname(null);
                            child.setManager(mgr);
                        }
                    };
                    host.setName(hostname);
                    getEngine().addChild(host);
                }
                return host;
            }
        };
        tomcat.start();