toggleservlet.java

来自「这是AJAX的一个HTML实现！ HTML标签AJAX的实现！」· Java 代码 · 共 59 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 java.io.IOException;
import java.io.PrintWriter;

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

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

    public void doGet(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {

	String rating = request.getParameter("rating");
	if (rating != null && rating.length() > 0) {
	    if ("2".equals(request.getParameter("type")))
		request.getSession().setAttribute("toggleRatingOnOff", rating);
	    else
		request.getSession().setAttribute("toggleRating", rating);
	} else {
	    rating = "";
	}

	PrintWriter pw = response.getWriter();
	pw.write(rating);
	pw.close();
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {
	doGet(request, response);
    }

}