001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 019 package jsp2.examples.simpletag; 020 021 import java.io.IOException; 022 import java.util.ArrayList; 023 024 import javax.servlet.jsp.JspException; 025 import javax.servlet.jsp.JspWriter; 026 import javax.servlet.jsp.tagext.DynamicAttributes; 027 import javax.servlet.jsp.tagext.SimpleTagSupport; 028 029 /** 030 * SimpleTag handler that echoes all its attributes 031 */ 032 public class EchoAttributesTag 033 extends SimpleTagSupport 034 implements DynamicAttributes { 035 private ArrayList keys = new ArrayList(); 036 private ArrayList values = new ArrayList(); 037 038 public void doTag() throws JspException, IOException { 039 JspWriter out = getJspContext().getOut(); 040 for (int i = 0; i < keys.size(); i++) { 041 String key = (String) keys.get(i); 042 Object value = values.get(i); 043 out.println("<li>" + key + " = " + value + "</li>"); 044 } 045 } 046 047 public void setDynamicAttribute(String uri, String localName, 048 Object value) 049 throws JspException { 050 keys.add(localName); 051 values.add(value); 052 } 053 }