当登陆成功以后，本浏览器将在3秒后跳转到登陆页面，如果没有跳转，请点击超链接

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

 public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException
 {
  response.setHeader("Refresh", "3;url='/ResponseDemo5/MyJsp.jsp'");
  response.getWriter().write("恭喜你，登陆成功，本浏览器将在3秒后跳转到登陆页面，如果没有跳转，请点击超链接");
 }