Java tutorial
/* * Copyright 2006-2007 original author or authors. * * 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.ultrapower.eoms.common.plugin.ecside.common; import java.util.Iterator; import java.util.Map; import org.apache.commons.lang.StringUtils; /** * @author Wei Zijun * */ public class HTMLOptionsUtil { public static String getOptionsList(Map imap){ return HTMLOptionsUtil.getOptionsList(imap,null); } public static String getOptionsList(Map imap,Object defaultKey){ return HTMLOptionsUtil.getOptionsList(imap,defaultKey,null); } //LinkedHashMap is good public static String getOptionsList(Map imap,Object defaultKey ,String otherAttribute){ StringBuffer rs=new StringBuffer(); Iterator itor=imap.keySet().iterator(); while (itor.hasNext()){ // String key=(String)itor.next(); // String value=(String)imap.get(key); String key=String.valueOf(itor.next()); String value=convertString(imap.get(key),""); String selected=""; if (key.equals(defaultKey)){ selected="selected=\"selected\""; } otherAttribute=StringUtils.isBlank(otherAttribute)?"":" "+otherAttribute+" "; rs.append("<option value=\"").append(key).append("\" ").append(selected).append(otherAttribute).append(" >") .append(value).append("</option>\n"); } return rs.toString(); } public static String convertString(Object obj,String nullTo){ return obj==null?nullTo:obj.toString(); } }