public void doGet(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {



		// 获得用户请求的时候，封装在request中的cooike信息

		Cookie[] cookies = request.getCookies();

		// 遍历cookie数组

		Cookie targetCookie = findTargetCookie(cookies, "lastvisit");



		response.setContentType("text/html;charset=utf-8");

		if (targetCookie == null) {



			response.getWriter().print("您第一次来！！");



		} else {

			String strTime = targetCookie.getValue();

			long time = Long.parseLong(strTime);

			Date dateTime = new Date(time);

			response.getWriter().print("您上次的访问时间是:"+dateTime.toLocaleString() );

		}

		

		//写出时间

		Cookie cook = new Cookie("lastvisit",System.currentTimeMillis()+"");

		response.addCookie(cook);



	}



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

		// TODO Auto-generated method stub

		if (cookies == null) {

			// null

			return null;

		}

		for (Cookie cookie : cookies) {

			if (cookie.getName().equals(name)) {

				// 找到目标cookie

				return cookie;

			}



		}

		return null;

	}