*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String username=request.getParameter("username");
String userpwd=request.getParameter("userpwd");
Usert user=new Usert(username,userpwd);
HttpSession session=request.getSession(true);
if(new UserDAO().CheckLogin(user)){
session.setAttribute("user","登陆成功!");
response.sendRedirect("loginok.jsp");