记录上一次访问时间 Cookie的使用

 Cookie[] cookies = request.getCookies();
  Cookie name = getcookieByName(cookies,"time");
  Date data=new Date();
  if(name==null){
  response.getWriter().write("第一次访问时间"+data.toLocaleString());
  }else{
  response.getWriter().write("上一次访问时间"+ new Date(Long.parseLong(name.getValue())).toLocaleString());
  }
  name=new Cookie("time", data.getTime()+"");
response.addCookie(name);

private Cookie getcookieByName(Cookie[] cookies, String name) {

      if(cookies==null){

     return null;

      }

   

      for(Cookie c:cookies){

    if(name.equals(c.getName())){

    return c;

    }

      }

      return null;

      

}