xwork-core-source-2.3.1.2源码

/* * Copyright 2002-2006,2009 The Apache Software Foundation. * * 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.opensymphony.xwork2.config.providers; import com.opensymphony.xwork2.Action; import com.opensymphony.xwork2.ObjectFactory; import com.opensymphony.xwork2.XWorkException; import com.opensymphony.xwork2.config.Configuration; import com.opensymphony.xwork2.config.ConfigurationException; import com.opensymphony.xwork2.config.ConfigurationProvider; import com.opensymphony.xwork2.config.ConfigurationUtil; import com.opensymphony.xwork2.config.entities.*; import com.opensymphony.xwork2.config.entities.UnknownHandlerConfig; import com.opensymphony.xwork2.config.impl.LocatableFactory; import com.opensymphony.xwork2.inject.Container; import com.opensymphony.xwork2.inject.ContainerBuilder; import com.opensymphony.xwork2.inject.Inject; import com.opensymphony.xwork2.inject.Scope; import com.opensymphony.xwork2.util.*; import com.opensymphony.xwork2.util.location.LocatableProperties; import com.opensymphony.xwork2.util.location.Location; import com.opensymphony.xwork2.util.location.LocationUtils; import com.opensymphony.xwork2.util.logging.Logger; import com.opensymphony.xwork2.util.logging.LoggerFactory; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.xml.sax.InputSource; import org.apache.commons.lang.StringUtils; import java.io.IOException; import java.io.InputStream; import java.lang.reflect.Modifier; import java.net.URL; import java.util.*; /** * Looks in the classpath for an XML file, "xwork.xml" by default, * and uses it for the XWork configuration. * * @author tmjee * @author Rainer Hermanns * @author Neo * @version $Revision: 1133947 $ */ public class XmlConfigurationProvider implements ConfigurationProvider { private static final Logger LOG = LoggerFactory.getLogger(XmlConfigurationProvider.class); private List<Document> documents; private Set<String> includedFileNames; private String configFileName; private ObjectFactory objectFactory; private Set<String> loadedFileUrls = new HashSet<String>(); private boolean errorIfMissing; private Map<String, String> dtdMappings; private Configuration configuration; private boolean throwExceptionOnDuplicateBeans = true; public XmlConfigurationProvider() { this("xwork.xml", true); } public XmlConfigurationProvider(String filename) { this(filename, true); } public XmlConfigurationProvider(String filename, boolean errorIfMissing) { this.configFileName = filename; this.errorIfMissing = errorIfMissing; Map<String, String> mappings = new HashMap<String, String>(); mappings.put("-//Apache Struts//XWork 2.3//EN", "xwork-2.3.dtd"); mappings.put("-//Apache Struts//XWork 2.1.3//EN", "xwork-2.1.3.dtd"); mappings.put("-//Apache Struts//XWork 2.1//EN", "xwork-2.1.dtd"); mappings.put("-//Apache Struts//XWork 2.0//EN", "xwork-2.0.dtd"); mappings.put("-//Apache Struts//XWork 1.1.1//EN", "xwork-1.1.1.dtd"); mappings.put("-//Apache Struts//XWork 1.1//EN", "xwork-1.1.dtd"); mappings.put("-//Apache Struts//XWork 1.0//EN", "xwork-1.0.dtd"); setDtdMappings(mappings); } public void setThrowExceptionOnDuplicateBeans(boolean val) { this.throwExceptionOnDuplicateBeans = val; } public void setDtdMappings(Map<String, String> mappings) { this.dtdMappings = Collections.unmodifiableMap(mappings); } @Inject public void setObjectFactory(ObjectFactory objectFactory) { this.objectFactory = objectFactory; } /** * Returns an unmodifiable map of DTD mappings */ public Map<String, String> getDtdMappings() { return dtdMappings; } public void init(Configuration configuration) { this.configuration = configuration; this.includedFileNames = configuration.getLoadedFileNames(); loadDocuments(configFileName); } public void destroy() { } @Override public boolean equals(Object o) { if (this == o) { return true; } if (!(o instanceof XmlConfigurationProvider)) { return false; } final XmlConfigurationProvider xmlConfigurationProvider = (XmlConfigurationProvider) o; if ((configFileName != null) ? (!configFileName.equals(xmlConfigurationProvider.configFileName)) : (xmlConfigurationProvider.configFileName != null)) { return false; } return true; } @Override public int hashCode() { return ((configFileName != null) ? configFileName.hashCode() : 0); } private void loadDocuments(String configFileName) { try { loadedFileUrls.clear(); documents = loadConfigurationFiles(configFileName, null); } catch (ConfigurationException e) { throw e; } catch (Exception e) { throw new ConfigurationException("Error loading configuration file " + configFileName, e); } } public void register(ContainerBuilder containerBuilder, LocatableProperties props) throws ConfigurationException { if (LOG.isInfoEnabled()) { LOG.info("Parsing configuration file [" + configFileName + "]"); } Map<String, Node> loadedBeans = new HashMap<String, Node>(); for (Document doc : documents) { Element rootElement = doc.getDocumentElement(); NodeList children = rootElement.getChildNodes(); int childSize = children.getLength(); for (int i = 0; i < childSize; i++) { Node childNode = children.item(i); if (childNode instanceof Element) { Element child = (Element) childNode; final String nodeName = child.getNodeName(); if ("bean".equals(nodeName)) { String type = child.getAttribute("type"); String name = child.getAttribute("name"); String impl = child.getAttribute("class"); String onlyStatic = child.getAttribute("static"); String scopeStr = child.getAttribute("scope"); boolean optional = "true".equals(child.getAttribute("optional")); Scope scope = Scope.SINGLETON; if ("default".equals(scopeStr)) { scope = Scope.DEFAULT; } else if ("request".equals(scopeStr)) { scope = Scope.REQUEST; } else if ("session".equals(scopeStr)) { scope = Scope.SESSION; } else if ("singleton".equals(scopeStr)) { scope = Scope.SINGLETON; } else if ("thread".equals(scopeStr)) { scope = Scope.THREAD; } if (StringUtils.isEmpty(name)) { name = Container.DEFAULT_NAME; } try { Class cimpl = ClassLoaderUtil.loadClass(impl, getClass()); Class ctype = cimpl; if (StringUtils.isNotEmpty(type)) {