examples/tomcat6/apache-tomcat-6.0.35-src/webapps/examples/WEB-INF/classes/listeners/SessionListener.java
Merged with mercurial revision 4f3cc813be4 (8 changesets total)
Merged changesets:
- f14cd4bbd33f: Jan Vrany, 2015-03-11 11:41 +0000: Zulu support: added Zulu7 and Zulu8 JavaReleases
- f8bc54a17beb: Jan Vrany, 2015-03-11 12:38 +0000: Java release: On UNIX, prefer OpenJDK over Zulu, on Windows, prefer Zulu over Oracle JDK
- 5dd55aa7d949: Jan Vrany, 2015-03-12 14:50 +0000: Zulu support: move natives from OracleJDK7 to OpenJDK7 as they are used by OpenJDK7 on Windows
- 2127b5057d60: Jan Vrany, 2015-03-13 09:40 +0000: testing: improved run-all.rb script to run tests with different configurations.
- a6d8f5c2ad73: Jan Vrany, 2015-03-13 13:33 +0000: Updated .hgignore
- e18d5c89221d: Jan Vrany, 2015-03-13 16:09 +0000: Java release: consult 64bit registry entries as well as 32 bit when searching for installed JDKs
- 183e4567bda7: Jan Vrany, 2015-03-17 20:56 +0000: Java release: added #is32bit & #is64bit testing methods
- 4f3cc813be4b: Jan Vrany, 2015-03-19 17:27 +0000: settings: JavaCodeLibrary validation refactored and improved
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package listeners;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
/**
* Example listener for context-related application events, which were
* introduced in the 2.3 version of the Servlet API. This listener
* merely documents the occurrence of such events in the application log
* associated with our servlet context.
*
* @author Craig R. McClanahan
* @version $Id: SessionListener.java,v 1.5 2015-03-20 13:29:43 vrany Exp $
*/
public final class SessionListener
implements ServletContextListener,
HttpSessionAttributeListener, HttpSessionListener {
// ----------------------------------------------------- Instance Variables
/**
* The servlet context with which we are associated.
*/
private ServletContext context = null;
// --------------------------------------------------------- Public Methods
/**
* Record the fact that a servlet context attribute was added.
*
* @param event The session attribute event
*/
public void attributeAdded(HttpSessionBindingEvent event) {
log("attributeAdded('" + event.getSession().getId() + "', '" +
event.getName() + "', '" + event.getValue() + "')");
}
/**
* Record the fact that a servlet context attribute was removed.
*
* @param event The session attribute event
*/
public void attributeRemoved(HttpSessionBindingEvent event) {
log("attributeRemoved('" + event.getSession().getId() + "', '" +
event.getName() + "', '" + event.getValue() + "')");
}
/**
* Record the fact that a servlet context attribute was replaced.
*
* @param event The session attribute event
*/
public void attributeReplaced(HttpSessionBindingEvent event) {
log("attributeReplaced('" + event.getSession().getId() + "', '" +
event.getName() + "', '" + event.getValue() + "')");
}
/**
* Record the fact that this web application has been destroyed.
*
* @param event The servlet context event
*/
public void contextDestroyed(ServletContextEvent event) {
log("contextDestroyed()");
this.context = null;
}
/**
* Record the fact that this web application has been initialized.
*
* @param event The servlet context event
*/
public void contextInitialized(ServletContextEvent event) {
this.context = event.getServletContext();
log("contextInitialized()");
}
/**
* Record the fact that a session has been created.
*
* @param event The session event
*/
public void sessionCreated(HttpSessionEvent event) {
log("sessionCreated('" + event.getSession().getId() + "')");
}
/**
* Record the fact that a session has been destroyed.
*
* @param event The session event
*/
public void sessionDestroyed(HttpSessionEvent event) {
log("sessionDestroyed('" + event.getSession().getId() + "')");
}
// -------------------------------------------------------- Private Methods
/**
* Log a message to the servlet context application log.
*
* @param message Message to be logged
*/
private void log(String message) {
if (context != null)
context.log("SessionListener: " + message);
else
System.out.println("SessionListener: " + message);
}
}