| /* |
| * 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.config; |
| |
| import com.opensymphony.xwork2.ActionContext; |
| import com.opensymphony.xwork2.config.ConfigurationException; |
| import com.opensymphony.xwork2.config.providers.XmlConfigurationProvider; |
| import com.opensymphony.xwork2.inject.ContainerBuilder; |
| import com.opensymphony.xwork2.inject.Context; |
| import com.opensymphony.xwork2.inject.Factory; |
| import com.opensymphony.xwork2.util.location.LocatableProperties; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import javax.servlet.ServletContext; |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.*; |
| |
| /** |
| * Override Xwork class so we can use an arbitrary config file |
| */ |
| public class StrutsXmlConfigurationProvider extends XmlConfigurationProvider { |
| |
| private static final Logger LOG = LogManager.getLogger(StrutsXmlConfigurationProvider.class); |
| private File baseDir = null; |
| private String filename; |
| private String reloadKey; |
| private ServletContext servletContext; |
| |
| /** |
| * Constructs the configuration provider |
| * |
| * @param errorIfMissing If we should throw an exception if the file can't be found |
| */ |
| public StrutsXmlConfigurationProvider(boolean errorIfMissing) { |
| this("struts.xml", errorIfMissing, null); |
| } |
| |
| /** |
| * Constructs the configuration provider |
| * |
| * @param filename The filename to look for |
| * @param errorIfMissing If we should throw an exception if the file can't be found, @deprecated and should be dropped |
| * @param ctx Our ServletContext |
| */ |
| public StrutsXmlConfigurationProvider(String filename, @Deprecated boolean errorIfMissing, ServletContext ctx) { |
| super(filename, errorIfMissing); |
| this.servletContext = ctx; |
| this.filename = filename; |
| reloadKey = "configurationReload-"+filename; |
| Map<String,String> dtdMappings = new HashMap<String,String>(getDtdMappings()); |
| dtdMappings.put("-//Apache Software Foundation//DTD Struts Configuration 2.0//EN", "struts-2.0.dtd"); |
| dtdMappings.put("-//Apache Software Foundation//DTD Struts Configuration 2.1//EN", "struts-2.1.dtd"); |
| dtdMappings.put("-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN", "struts-2.1.7.dtd"); |
| dtdMappings.put("-//Apache Software Foundation//DTD Struts Configuration 2.3//EN", "struts-2.3.dtd"); |
| dtdMappings.put("-//Apache Software Foundation//DTD Struts Configuration 2.5//EN", "struts-2.5.dtd"); |
| dtdMappings.put("-//Apache Software Foundation//DTD Struts Configuration 2.6//EN", "struts-2.6.dtd"); |
| setDtdMappings(dtdMappings); |
| File file = new File(filename); |
| if (file.getParent() != null) { |
| this.baseDir = file.getParentFile(); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see com.opensymphony.xwork2.config.providers.XmlConfigurationProvider#register(com.opensymphony.xwork2.inject.ContainerBuilder, java.util.Properties) |
| */ |
| @Override |
| public void register(ContainerBuilder containerBuilder, LocatableProperties props) throws ConfigurationException { |
| if (servletContext != null && !containerBuilder.contains(ServletContext.class)) { |
| containerBuilder.factory(ServletContext.class, new Factory<ServletContext>() { |
| public ServletContext create(Context context) throws Exception { |
| return servletContext; |
| } |
| public Class<? extends ServletContext> type() { |
| return servletContext.getClass(); |
| } |
| }); |
| } |
| super.register(containerBuilder, props); |
| } |
| |
| /* (non-Javadoc) |
| * @see com.opensymphony.xwork2.config.providers.XmlConfigurationProvider#init(com.opensymphony.xwork2.config.Configuration) |
| */ |
| @Override |
| public void loadPackages() { |
| ActionContext ctx = ActionContext.getContext(); |
| ctx.put(reloadKey, Boolean.TRUE); |
| super.loadPackages(); |
| } |
| |
| /** |
| * Look for the configuration file on the classpath and in the file system |
| * |
| * @param fileName The file name to retrieve |
| * @see com.opensymphony.xwork2.config.providers.XmlConfigurationProvider#getConfigurationUrls |
| */ |
| @Override |
| protected Iterator<URL> getConfigurationUrls(String fileName) throws IOException { |
| URL url = null; |
| if (baseDir != null) { |
| url = findInFileSystem(fileName); |
| if (url == null) { |
| return super.getConfigurationUrls(fileName); |
| } |
| } |
| if (url != null) { |
| List<URL> list = new ArrayList<>(); |
| list.add(url); |
| return list.iterator(); |
| } else { |
| return super.getConfigurationUrls(fileName); |
| } |
| } |
| |
| protected URL findInFileSystem(String fileName) throws IOException { |
| URL url = null; |
| File file = new File(fileName); |
| LOG.debug("Trying to load file: {}", file); |
| |
| // Trying relative path to original file |
| if (!file.exists()) { |
| file = new File(baseDir, fileName); |
| } |
| if (file.exists()) { |
| try { |
| url = file.toURI().toURL(); |
| } catch (MalformedURLException e) { |
| throw new IOException("Unable to convert "+file+" to a URL"); |
| } |
| } |
| return url; |
| } |
| |
| /** |
| * Overrides needs reload to ensure it is only checked once per request |
| */ |
| @Override |
| public boolean needsReload() { |
| ActionContext ctx = ActionContext.getContext(); |
| if (ctx != null) { |
| return ctx.get(reloadKey) == null && super.needsReload(); |
| } else { |
| return super.needsReload(); |
| } |
| |
| } |
| |
| public String toString() { |
| return ("Struts XML configuration provider ("+filename+")"); |
| } |
| } |