jsp Í·Îļþ cookie

<%
Cookie[] cooks = request.getCookies();
String cookieName = "Mycookie";
boolean flag = false;
for(Cookie cook : cooks)
{
if(cook.getName().equals(cookieName))
{
    flag = true;
    break;
}
}
if(!flag){
String str=System.currentTimeMillis()+"";
Cookie cookie=new Cookie("Mycookie",str);
cookie.setMaxAge(365*24*60*60);
response.addCookie(cookie);
}
%>