stuupdatepassword.java

我实习时候的设计

package cn.yxh.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;

import cn.yxh.dao.LoginDAO;

public class StuUpdatePassword 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 {

	doPost(request,response);
	}

	/**
	 * 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 {
		
		String username = (String)request.getSession().getAttribute("studentid");
		String oldpassword = request.getParameter("password");
		String newpassword = request.getParameter("password1");
		String usertype = (String)request.getSession().getAttribute("usertype");
	
		
		System.out.println(username+" "+oldpassword+" "+newpassword+" "+usertype);
		
		boolean b = LoginDAO.updatePassword(username, oldpassword, newpassword, usertype);
		System.out.println(b);
		if(b) {
			request.getRequestDispatcher("StudentViewServlet").forward(request, response);
		}
	}

}