servlet 源码

/* * 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.catalina.core; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.ObjectOutputStream; import java.io.Serializable; import java.util.ArrayList; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.Stack; import java.util.TreeMap; import javax.management.AttributeNotFoundException; import javax.management.ListenerNotFoundException; import javax.management.MBeanNotificationInfo; import javax.management.MBeanRegistrationException; import javax.management.MBeanServer; import javax.management.MalformedObjectNameException; import javax.management.Notification; import javax.management.NotificationBroadcasterSupport; import javax.management.NotificationEmitter; import javax.management.NotificationFilter; import javax.management.NotificationListener; import javax.management.ObjectName; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.servlet.FilterConfig; import javax.servlet.ServletContext; import javax.servlet.ServletContextAttributeListener; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; import javax.servlet.ServletException; import javax.servlet.ServletRequestAttributeListener; import javax.servlet.ServletRequestListener; import javax.servlet.http.HttpSessionAttributeListener; import javax.servlet.http.HttpSessionListener; import org.apache.AnnotationProcessor; import org.apache.catalina.Container; import org.apache.catalina.ContainerListener; import org.apache.catalina.Context; import org.apache.catalina.Engine; import org.apache.catalina.Globals; import org.apache.catalina.Host; import org.apache.catalina.InstanceListener; import org.apache.catalina.Lifecycle; import org.apache.catalina.LifecycleException; import org.apache.catalina.LifecycleListener; import org.apache.catalina.Loader; import org.apache.catalina.Manager; import org.apache.catalina.Wrapper; import org.apache.catalina.deploy.ApplicationParameter; import org.apache.catalina.deploy.ErrorPage; import org.apache.catalina.deploy.FilterDef; import org.apache.catalina.deploy.FilterMap; import org.apache.catalina.deploy.LoginConfig; import org.apache.catalina.deploy.MessageDestination; import org.apache.catalina.deploy.MessageDestinationRef; import org.apache.catalina.deploy.NamingResources; import org.apache.catalina.deploy.SecurityCollection; import org.apache.catalina.deploy.SecurityConstraint; import org.apache.catalina.loader.WebappLoader; import org.apache.catalina.session.StandardManager; import org.apache.catalina.startup.ContextConfig; import org.apache.catalina.startup.TldConfig; import org.apache.catalina.util.CharsetMapper; import org.apache.catalina.util.DefaultAnnotationProcessor; import org.apache.catalina.util.ExtensionValidator; import org.apache.catalina.util.RequestUtil; import org.apache.catalina.util.URLEncoder; import org.apache.juli.logging.Log; import org.apache.juli.logging.LogFactory; import org.apache.naming.ContextBindings; import org.apache.naming.resources.BaseDirContext; import org.apache.naming.resources.DirContextURLStreamHandler; import org.apache.naming.resources.FileDirContext; import org.apache.naming.resources.ProxyDirContext; import org.apache.naming.resources.WARDirContext; import org.apache.tomcat.util.modeler.Registry; /** * Standard implementation of the <b>Context</b> interface. Each * child container must be a Wrapper implementation to process the * requests directed to a particular servlet. * * @author Craig R. McClanahan * @author Remy Maucherat * @version $Revision: 664494 $ $Date: 2008-06-08 14:49:50 +0200 (Sun, 08 Jun 2008) $ */ public class StandardContext extends ContainerBase implements Context, Serializable, NotificationEmitter { private static transient Log log = LogFactory.getLog(StandardContext.class); // ----------------------------------------------------------- Constructors /** * Create a new StandardContext component with the default basic Valve. */ public StandardContext() { super(); pipeline.setBasic(new StandardContextValve()); broadcaster = new NotificationBroadcasterSupport(); } // ----------------------------------------------------- Class Variables /** * The descriptive information string for this implementation. */ private static final String info = "org.apache.catalina.core.StandardContext/1.0"; /** * Array containing the safe characters set. */ protected static URLEncoder urlEncoder; /** * GMT timezone - all HTTP dates are on GMT */ static { urlEncoder = new URLEncoder(); urlEncoder.addSafeCharacter('~'); urlEncoder.addSafeCharacter('-'); urlEncoder.addSafeCharacter('_'); urlEncoder.addSafeCharacter('.'); urlEncoder.addSafeCharacter('*'); urlEncoder.addSafeCharacter('/'); } // ----------------------------------------------------- Instance Variables /** * The alternate deployment descriptor name. */ private String altDDName = null; /** * Annotation processor. */ private AnnotationProcessor annotationProcessor = null; /** * Associated host name. */ private String hostName; /** * The antiJARLocking flag for this Context. */ private boolean antiJARLocking = false; /** * The antiResourceLocking flag for this Context. */ private boolean antiResourceLocking = false; /** * The set of application listener class names configured for this * application, in the order they were encountered in the web.xml file. */ private String applicationListeners[] = new String[0]; /** * The set of instantiated application event listener objects</code>. */ private transient Object applicationEventListenersObjects[] = new Object[0]; /** * The set of instantiated application lifecycle listener objects</code>. */ private transient Object applicationLifecycleListenersObjects[] = new Object[0]; /** * The set of application parameters defined for this application. */ private ApplicationParameter applicationParameters[] = new ApplicationParameter[0]; /** * The application available flag for this Context. */ private boolean available = false; /** * The broadcaster that sends j2ee notifications. */ private NotificationBroadcasterSupport broadcaster = null; /** * The Locale to character set mapper for this application. */ private transient CharsetMapper charsetMapper = null; /** * The Java class name of the CharsetMapper class to be created. */ private String charsetMapperClass = "org.apache.catalina.util.CharsetMapper"; /** * The path to a file to save this Context information. */ private String configFile = null;