Java tutorial
/* * Copyright 2012 The Athena Project * * The Athena Project licenses this file to you 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 com.athena.sqs; import javax.servlet.ServletContext; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; import org.apache.log4j.Logger; import org.springframework.context.ApplicationContext; import org.springframework.web.context.WebApplicationContext; /** * <pre> <?xml version="1.0" encoding="ISO-8859-1"?> <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/your-config.xml</param-value> </context-param> OR <servlet> <servlet-name>MessageInitializer</servlet-name> <servlet-class>com.athena.sqs.MessageListener</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/your-config.xml</param-value> </init-param> </servlet> </web-app> </pre> */ public class MessageDispatchListener implements ServletContextListener { private final Logger logger = Logger.getLogger(this.getClass()); //private @Autowired SQSExtractorConfig config; private String sqsConfigLocation; public void contextInitialized(ServletContextEvent sce) { ServletContext servletContext = sce.getServletContext(); sqsConfigLocation = servletContext.getInitParameter("sqsConfigLocation"); String realPath = servletContext.getRealPath(sqsConfigLocation); if (logger.isDebugEnabled()) { logger.debug("****************** SQS Config ******************"); logger.debug("LOCATION : " + sqsConfigLocation); logger.debug("REAL LOCATION : " + realPath); logger.debug("************************************************"); } ApplicationContext applicationContext = (ApplicationContext) servletContext .getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE); // TODO : You can load your own application config here } public void contextDestroyed(ServletContextEvent arg0) { // TODO Auto-generated method stub } }