網站提示上次訪問時間的代碼

public class CookieDemo extends HttpServlet {

 public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
 
  response.setCharacterEncoding("UTF-8");
  response.setHeader("Content-Type", "text/html;charset=UTF-8");
  PrintWriter out = response.getWriter();
  
  //你得到上次訪問的cookie對象
  out.print("您上次訪問的時間是: ");
  Cookie cookies[] = request.getCookies();
  for (int i = 0; cookies!=null && i < cookies.length; i++) {
   Cookie cookie = cookies[i];
   if("lastTime".equals(cookie.getName())){
    String lastTime = cookie.getValue();
    Date date = new Date(Long.parseLong(lastTime));
    out.println(date.toLocaleString());
   }
  }
  
  //記錄這次cookie信息  記錄你這次訪問日期
  //創建Cookie
  Cookie ck = new Cookie("lastTime", System.+"");
  //有效日期爲0時 創建cookie到會話結束 刪除cookie
  ck.setMaxAge(3600);//1小時
  ck.setPath("/20111024/CookieDemo.do");
  //發送給你的響應
  response.addCookie(ck);
  
  
  
  
 }

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

  doGet(request, response);
 }

}