exitform.java

来自「基于Spring2.5的精品课程网站」· Java 代码 · 共 39 行

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;
@SuppressWarnings("serial")
public class ExitForm extends HttpServlet {

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @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 doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		HttpSession session=request.getSession();
		if(null!=session.getAttribute("teacherID")){
			session.removeAttribute("teacherID");
			session.removeAttribute("subject");
		}else if(null!=session.getAttribute("studentID")){
			session.removeAttribute("studentID");
		}
		response.sendRedirect("/GoodSubject/index");
	}

}