download.java

基于Spring2.5的精品课程网站

package org.adam.servlet;

import java.io.IOException;


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


import org.adam.service.impl.DownloadServiceBean;
import org.adam.tools.Factory;

@SuppressWarnings("serial")
public class Download extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html;charset=gbk");
		request.setCharacterEncoding("GBK");
		response.setCharacterEncoding("GBK");
		HttpSession session=request.getSession();
		int upload_id=Integer.parseInt(request.getParameter("upload_id"));
		session.setAttribute("upload_id", upload_id);
		DownloadServiceBean download=(DownloadServiceBean)Factory.getBeanName("downloadService");		
		if(session.getAttribute("teacherID")!=null ||session.getAttribute("studentID")!=null){
			download.download(request, response);
		}else{
			response.sendRedirect("downerror.jsp");
		}		
	}

}