cookie显示上次访问时间

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Calendar;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ShowLastAccessTime extends HttpServlet {

public ShowLastAccessTime() {
super();
}

protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//输出汉字 应控制编码方式
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
PrintWriter write = response.getWriter();
write.print("您上次访问时间为：");
//获取用户的时间cookie
Cookie[] cookies = request.getCookies();
for(int i = 0;cookies!=null&&i<cookies.length;i++){
if(cookies[i].getName().equals("lastAccessTime")){
long time = Long.parseLong(cookies[i].getValue());
Calendar date = Calendar.getInstance();
date.setTimeInMillis(time);
write.print(date.getTime().toString()+"<br/>");
}

}
//设置用户时间cookie
Cookie cookie = new Cookie("lastAccessTime",System.currentTimeMillis()+"");
cookie.setMaxAge(1*30*24*60*60);
response.addCookie(cookie);
}

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

}