Java tutorial
/* * $Id: SEOActionNameBuilder.java 1292705 2012-02-23 08:40:53Z lukaszlenart $ * * 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.convention; import com.opensymphony.xwork2.inject.Inject; import com.opensymphony.xwork2.util.logging.Logger; import com.opensymphony.xwork2.util.logging.LoggerFactory; import org.apache.commons.lang3.StringUtils; /** * <p> * This class converts the class name into a SEO friendly name by recognizing * camel casing and inserting dashes. This also converts everything to * lower case if desired. And this will also strip off the word <b>Action</b> * from the class name. * </p> */ public class SEOActionNameBuilder implements ActionNameBuilder { private static final Logger LOG = LoggerFactory.getLogger(SEOActionNameBuilder.class); private String actionSuffix = "Action"; private boolean lowerCase; private String separator; @Inject public SEOActionNameBuilder(@Inject(value = "struts.convention.action.name.lowercase") String lowerCase, @Inject(value = "struts.convention.action.name.separator") String separator) { this.lowerCase = Boolean.parseBoolean(lowerCase); this.separator = separator; } /** * @param actionSuffix (Optional) Classes that end with these value will be mapped as actions * (defaults to "Action") */ @Inject(value = "struts.convention.action.suffix", required = false) public void setActionSuffix(String actionSuffix) { if (StringUtils.isNotBlank(actionSuffix)) { this.actionSuffix = actionSuffix; } } public String build(String className) { String actionName = className; if (actionName.equals(actionSuffix)) throw new IllegalStateException( "The action name cannot be the same as the action suffix [" + actionSuffix + "]"); // Truncate Action suffix if found if (actionName.endsWith(actionSuffix)) { actionName = actionName.substring(0, actionName.length() - actionSuffix.length()); } // Convert to underscores char[] ca = actionName.toCharArray(); StringBuilder build = new StringBuilder("" + ca[0]); boolean lower = true; for (int i = 1; i < ca.length; i++) { char c = ca[i]; if (Character.isUpperCase(c) && lower) { build.append(separator); lower = false; } else if (!Character.isUpperCase(c)) { lower = true; } build.append(c); } actionName = build.toString(); if (lowerCase) { actionName = actionName.toLowerCase(); } if (LOG.isTraceEnabled()) { LOG.trace("Changed action name from [#0] to [#1]", className, actionName); } return actionName; } }