| /* |
| * 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 org.apache.shiro.web.env; |
| |
| import javax.servlet.ServletContextEvent; |
| import javax.servlet.ServletContextListener; |
| |
| /** |
| * Bootstrap listener to startup and shutdown the web application's Shiro |
| * {@link WebEnvironment} at ServletContext startup and shutdown respectively. This class exists only to |
| * implement the {@link ServletContextListener} interface. All 'real' logic is done in the parent |
| * {@link EnvironmentLoader} class. |
| * <h2>Usage</h2> |
| * Define the following in {@code web.xml}: |
| * <pre> |
| * <listener> |
| * <listener-class><code>org.apache.shiro.web.env.EnvironmentLoaderListener</code></listener-class> |
| * </listener> |
| * </pre> |
| * Configuration options, such as the {@code WebEnvironment} class to instantiate as well as Shiro configuration |
| * resource locations are specified as {@code ServletContext} {@code context-param}s and are documented in the |
| * {@link EnvironmentLoader} JavaDoc. |
| * <h2>Shiro Filter</h2> |
| * This listener is almost always defined in conjunction with the |
| * {@link org.apache.shiro.web.servlet.ShiroFilter ShiroFilter} to ensure security operations for web requests. Please |
| * see the {@link org.apache.shiro.web.servlet.ShiroFilter ShiroFilter} JavaDoc for more. |
| * |
| * |
| * @see EnvironmentLoader |
| * @see org.apache.shiro.web.servlet.ShiroFilter ShiroFilter |
| * @since 1.2 |
| */ |
| public class EnvironmentLoaderListener extends EnvironmentLoader implements ServletContextListener { |
| |
| /** |
| * Initializes the Shiro {@code WebEnvironment} and binds it to the {@code ServletContext} at application |
| * startup for future reference. |
| * |
| * @param sce the ServletContextEvent triggered upon application startup |
| */ |
| public void contextInitialized(ServletContextEvent sce) { |
| initEnvironment(sce.getServletContext()); |
| } |
| |
| /** |
| * Destroys any previously created/bound {@code WebEnvironment} instance created by |
| * the {@link #contextInitialized(javax.servlet.ServletContextEvent)} method. |
| * |
| * @param sce the ServletContextEvent triggered upon application shutdown |
| */ |
| public void contextDestroyed(ServletContextEvent sce) { |
| destroyEnvironment(sce.getServletContext()); |
| } |
| } |