calloutservlet.java

来自「这是AJAX的一个HTML实现！ HTML标签AJAX的实现！」· Java 代码 · 共 60 行

/**
 * Copyright 2005 Darren L. Spurgeon
 * 
 * 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 net.sourceforge.ajaxtags.demo.servlet;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sourceforge.ajaxtags.servlets.BaseAjaxServlet;
import net.sourceforge.ajaxtags.xml.AjaxXmlBuilder;

/**
 * An example servlet that responds to an ajax:callout tag action. This servlet
 * would be referenced by the baseUrl attribute of the JSP tag.
 * <p>
 * This servlet should generate XML in the following format:
 * </p>
 * <code><![CDATA[<?xml version="1.0"?>
 * <list>
 *   <item value="Item1">First Item</item>
 *   <item value="Item2">Second Item</item>
 *   <item value="Item3">Third Item</item>
 * </list>]]></code>
 * 
 * @author Darren L. Spurgeon
 * @version $Revision: 28 $ $Date$
 */
public class CalloutServlet extends BaseAjaxServlet {

    /**
     * @see BaseAjaxServlet#getXmlContent(javax.servlet.http.HttpServletRequest,
     *      javax.servlet.http.HttpServletResponse)
     */
    public String getXmlContent(HttpServletRequest request,
	    HttpServletResponse response) {

	String param = request.getParameter("q");
	if (param == null) {
	    param = request.getParameter("editorId");
	    return request.getParameter("value");
	}
	return new AjaxXmlBuilder().addItemAsCData(
		"Callout Header",
		"<p>This is a test of the 'callout.view'</p><p>You asked about:<br/><b>"
			+ param + "</b>.</p>").toString();
    }
}