/*
* Copyright 2002-2008 the original author or authors.
*
* Licensed 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 org.springframework.web.util;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
/**
* Bootstrap listener for custom log4j initialization in a web environment.
* Delegates to {@link Log4jWebConfigurer} (see its javadoc for configuration details).
*
* <b>WARNING: Assumes an expanded WAR file</b>, both for loading the configuration
* file and for writing the log files. If you want to keep your WAR unexpanded or
* don't need application-specific log files within the WAR directory, don't use
* log4j setup within the application (thus, don't use Log4jConfigListener or
* Log4jConfigServlet). Instead, use a global, VM-wide log4j setup (for example,
* in JBoss) or JDK 1.4's <code>java.util.logging</code> (which is global too).
*
* <p>This listener should be registered before ContextLoaderListener in <code>web.xml</code>
* when using custom log4j initialization.
*
* @author Juergen Hoeller
* @since 13.03.2003
* @see Log4jWebConfigurer
* @see Log4jConfigServlet
* @see org.springframework.web.context.ContextLoaderListener
* @see org.springframework.web.context.ContextLoaderServlet
* @see WebAppRootListener
*/
public class Log4jConfigListener implements ServletContextListener {
public void contextInitialized(ServletContextEvent event) {
Log4jWebConfigurer.initLogging(event.getServletContext());
}
public void contextDestroyed(ServletContextEvent event) {
Log4jWebConfigurer.shutdownLogging(event.getServletContext());
}
}