dropdownservlet.java

来自「这是AJAX的一个HTML实现！ HTML标签AJAX的实现！」· Java 代码 · 共 65 行

/**
 * Copyright 2005 Darren L. Spurgeon
 * Copyright 2007 Jens Kapitza
 * 
 * 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 java.util.List;

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

import net.sourceforge.ajaxtags.demo.Car;
import net.sourceforge.ajaxtags.demo.CarService;
import net.sourceforge.ajaxtags.servlets.BaseAjaxServlet;
import net.sourceforge.ajaxtags.xml.AjaxXmlBuilder;

/**
 * An example servlet that responds to an ajax:select tag action. This servlet
 * would be referenced by the baseUrl attribute of the JSP tag.
 * 
 * @author Darren L. Spurgeon
 * @author Jens Kapitza
 * @version $Revision: 28 $ $Date$
 */
public class DropdownServlet extends BaseAjaxServlet {

    /**
     * @see BaseAjaxServlet#getXmlContent(javax.servlet.http.HttpServletRequest,
     *      javax.servlet.http.HttpServletResponse)
     */
    public String getXmlContent(HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	String make = request.getParameter("make");

	// Get maker from your service bean
	CarService service = new CarService();
	List<Car> list = service.getModelsByMake(make);
	AjaxXmlBuilder xml = new AjaxXmlBuilder();
	int c = 0;
	for (Car car : list) {
	    String param3 = "false";
	    // i select each 4 value
	    if (c == 3) {
		param3 = "true";
	    }
	    c++;
	    xml.addItem(car.getModel(), true, car.getModel(), param3);
	}
	return xml.toString();
    }

}