显示用户上次访问页面的时间

import javax.servlet.http.cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ax  extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //设置编码格式
        response.setContentType("text/html;Charset=UTF-8");

        String lastAccessTime = null;
        //获取所有cookie
        cookie[] cookies = request.getcookies();
        //遍历cookies数组
        String lastAccess = "2";
        for (int i=0;cookies != null && i