public class CookieDemo extends HttpServlet {        @Override    protected void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        //创建cookie 对象        Cookie cookie = new Cookie("name", "ckang");        Cookie cookie1 = new Cookie("email","ckang@163.com");        // 发送cookie到浏览器        response.addCookie(cookie);        response.addCookie(cookie1);                //获取从浏览器中请求中带来的cookie信息        Cookie[] cookies = request.getCookies();        if (null != cookies) {            for(Cookie c : cookies){                String name = c.getName();                String value = c.getValue();                System.out.println(name+":::"+value);            }        }else{            System.out.println("cookie还没有数据...");        }    }}