struts-2.0.11.1源码

/* * $Id: Dispatcher.java 566474 2007-08-16 02:55:44Z jholmes $ * * 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.struts2.dispatcher; import java.io.File; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Locale; import java.util.Map; import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.struts2.ServletActionContext; import org.apache.struts2.StrutsConstants; import org.apache.struts2.StrutsStatics; import org.apache.struts2.config.*; import org.apache.struts2.config.ClasspathConfigurationProvider.ClasspathPageLocator; import org.apache.struts2.config.ClasspathConfigurationProvider.PageLocator; import org.apache.struts2.dispatcher.mapper.ActionMapping; import org.apache.struts2.dispatcher.multipart.MultiPartRequest; import org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper; import org.apache.struts2.util.AttributeMap; import org.apache.struts2.util.ClassLoaderUtils; import org.apache.struts2.util.ObjectFactoryDestroyable; import org.apache.struts2.views.freemarker.FreemarkerManager; import com.opensymphony.xwork2.util.FileManager; import com.opensymphony.xwork2.*; import com.opensymphony.xwork2.Result; import com.opensymphony.xwork2.config.Configuration; import com.opensymphony.xwork2.config.ConfigurationException; import com.opensymphony.xwork2.config.ConfigurationManager; import com.opensymphony.xwork2.config.ConfigurationProvider; import com.opensymphony.xwork2.config.providers.XmlConfigurationProvider; import com.opensymphony.xwork2.inject.Container; import com.opensymphony.xwork2.inject.ContainerBuilder; import com.opensymphony.xwork2.inject.Inject; import com.opensymphony.xwork2.util.LocalizedTextUtil; import com.opensymphony.xwork2.util.ObjectTypeDeterminer; import com.opensymphony.xwork2.util.ObjectTypeDeterminerFactory; import com.opensymphony.xwork2.util.ValueStack; import com.opensymphony.xwork2.util.ValueStackFactory; import com.opensymphony.xwork2.util.location.Location; import com.opensymphony.xwork2.util.location.LocationUtils; import com.opensymphony.xwork2.util.location.LocatableProperties; import com.opensymphony.xwork2.util.profiling.UtilTimerStack; import freemarker.template.Template; /** * A utility class the actual dispatcher delegates most of its tasks to. Each instance * of the primary dispatcher holds an instance of this dispatcher to be shared for * all requests. * * @see org.apache.struts2.dispatcher.FilterDispatcher * @see org.apache.struts2.portlet.dispatcher.Jsr168Dispatcher */ public class Dispatcher { /** * Provide a logging instance. */ private static final Log LOG = LogFactory.getLog(Dispatcher.class); /** * Provide a thread local instance. */ private static ThreadLocal<Dispatcher> instance = new ThreadLocal<Dispatcher>(); /** * Store list of DispatcherListeners. */ private static List<DispatcherListener> dispatcherListeners = new ArrayList<DispatcherListener>(); /** * Store ConfigurationManager instance, set on init. */ private ConfigurationManager configurationManager; /** * Store whether portlet support is active * (set to true by Jsr168Dispatcher). */ private static boolean portletSupportActive; /** * Store state of StrutsConstants.STRUTS_DEVMODE setting. */ private static boolean devMode; /** * Store state of StrutsConstants.STRUTS_I18N_ENCODING setting. */ private static String defaultEncoding; /** * Store state of StrutsConstants.STRUTS_LOCALE setting. */ private static String defaultLocale; /** * Store state of StrutsConstants.STRUTS_MULTIPART_SAVEDIR setting. */ private static String multipartSaveDir; /** * Provide list of default configuration files. */ private static final String DEFAULT_CONFIGURATION_PATHS = "struts-default.xml,struts-plugin.xml,struts.xml"; /** * Store state of STRUTS_DISPATCHER_PARAMETERSWORKAROUND. * <p/> * The workaround is for WebLogic. * We try to autodect WebLogic on Dispatcher init. * The workaround can also be enabled manually. */ private boolean paramsWorkaroundEnabled = false; /** * Provide the dispatcher instance for the current thread. * * @return The dispatcher instance */ public static Dispatcher getInstance() { return instance.get(); } /** * Store the dispatcher instance for this thread. * * @param instance The instance */ public static void setInstance(Dispatcher instance) { Dispatcher.instance.set(instance); // Tie the ObjectFactory threadlocal instance to this Dispatcher instance if (instance != null) { Container cont = instance.getContainer(); if (cont != null) { ObjectFactory.setObjectFactory(cont.getInstance(ObjectFactory.class)); } else { LOG.warn("This dispatcher instance doesn't have a container, so the object factory won't be set."); } } else { ObjectFactory.setObjectFactory(null); } } /** * Add a dispatcher lifecycle listener. * * @param listener The listener to add */ public static synchronized void addDispatcherListener(DispatcherListener listener) { dispatcherListeners.add(listener); } /** * Remove a specific dispatcher lifecycle listener. * * @param listener The listener */ public static synchronized void removeDispatcherListener(DispatcherListener listener) { dispatcherListeners.remove(listener); } private ServletContext servletContext; private Map<String, String> initParams; /** * Create the Dispatcher instance for a given ServletContext and set of initialization parameters. * * @param servletContext Our servlet context * @param initParams The set of initialization parameters */ public Dispatcher(ServletContext servletContext, Map<String, String> initParams) { this.servletContext = servletContext; this.initParams = initParams; } /** * Modify state of StrutsConstants.STRUTS_DEVMODE setting. * @param mode New setting */ @Inject(StrutsConstants.STRUTS_DEVMODE) public static void setDevMode(String mode) { devMode = "true".equals(mode); } /** * Modify state of StrutsConstants.STRUTS_LOCALE setting. * @param val New setting */ @Inject(value=StrutsConstants.STRUTS_LOCALE, required=false) public static void setDefaultLocale(String val) { defaultLocale = val; } /** * Modify state of StrutsConstants.STRUTS_I18N_ENCODING setting. * @param val New setting */ @Inject(StrutsConstants.STRUTS_I18N_ENCODING) public static void setDefaultEncoding(Stri