| /* |
| * $Id$ |
| * |
| * Copyright 2006 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 org.apache.struts2.dispatcher.mapper; |
| |
| import java.net.URLDecoder; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.StringTokenizer; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.struts2.RequestUtils; |
| |
| import com.opensymphony.xwork2.config.Configuration; |
| |
| /** |
| * A custom action mapper using the following format: |
| * <p/> |
| * <p/> |
| * <ul><tt>http://HOST/ACTION_NAME/PARAM_NAME1/PARAM_VALUE1/PARAM_NAME2/PARAM_VALUE2</tt></ul> |
| * <p/> |
| * You can have as many parameters you'd like to use. Alternatively the URL can be shortened to the following: |
| * <p/> |
| * <ul><tt>http://HOST/ACTION_NAME/PARAM_VALUE1/PARAM_NAME2/PARAM_VALUE2</tt></ul> |
| * <p/> |
| * This is the same as: |
| * <p/> |
| * <ul><tt>http://HOST/ACTION_NAME/ACTION_NAME + "Id"/PARAM_VALUE1/PARAM_NAME2/PARAM_VALUE2</tt></ul> |
| * <p/> |
| * Suppose for example we would like to display some articles by id at using the following URL sheme: |
| * <p/> |
| * <ul><tt>http://HOST/article/Id</tt></ul> |
| * <p/> |
| * <p/> |
| * Your action just needs a setArticleId() method, and requests such as /article/1, /article/2, etc will all map |
| * to that URL pattern. |
| * |
| */ |
| public class RestfulActionMapper implements ActionMapper { |
| protected static final Log LOG = LogFactory.getLog(RestfulActionMapper.class); |
| |
| /* (non-Javadoc) |
| * @see org.apache.struts2.dispatcher.mapper.ActionMapper#getMapping(javax.servlet.http.HttpServletRequest) |
| */ |
| public ActionMapping getMapping(HttpServletRequest request, Configuration config) { |
| String uri = RequestUtils.getServletPath(request); |
| |
| int nextSlash = uri.indexOf('/', 1); |
| if (nextSlash == -1) { |
| return null; |
| } |
| |
| String actionName = uri.substring(1, nextSlash); |
| HashMap<String,String> parameters = new HashMap<String,String>(); |
| try { |
| StringTokenizer st = new StringTokenizer(uri.substring(nextSlash), "/"); |
| boolean isNameTok = true; |
| String paramName = null; |
| String paramValue; |
| |
| // check if we have the first parameter name |
| if ((st.countTokens() % 2) != 0) { |
| isNameTok = false; |
| paramName = actionName + "Id"; |
| } |
| |
| while (st.hasMoreTokens()) { |
| if (isNameTok) { |
| paramName = URLDecoder.decode(st.nextToken(), "UTF-8"); |
| isNameTok = false; |
| } else { |
| paramValue = URLDecoder.decode(st.nextToken(), "UTF-8"); |
| |
| if ((paramName != null) && (paramName.length() > 0)) { |
| parameters.put(paramName, paramValue); |
| } |
| |
| isNameTok = true; |
| } |
| } |
| } catch (Exception e) { |
| LOG.warn(e); |
| } |
| |
| return new ActionMapping(actionName, "", "", parameters); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.struts2.dispatcher.mapper.ActionMapper#getUriFromActionMapping(org.apache.struts2.dispatcher.mapper.ActionMapping) |
| */ |
| public String getUriFromActionMapping(ActionMapping mapping) { |
| String base = mapping.getNamespace() + mapping.getName(); |
| for (Iterator iterator = mapping.getParams().entrySet().iterator(); iterator.hasNext();) { |
| Map.Entry entry = (Map.Entry) iterator.next(); |
| String name = (String) entry.getKey(); |
| if (name.equals(mapping.getName() + "Id")) { |
| base = base + "/" + entry.getValue(); |
| break; |
| } |
| } |
| |
| return base; |
| } |
| } |