设置session，cookies

1 Cookie cookie = new Cookie("username",username);
2 cookie.setMaxAge(60 * 60 * 24 * 365 * 2);//设置cookie保存时间
3 cookie.setPath("/");//cookie有效路径是网站根目录
4 con.getResponse().addCookie(cookie);//向客户端写入cookie
5 con.setSessionAttr("userLogin", model);  

1 HttpSession session = request.getSession();
2 session.setMaxInactiveInterval(60*60);//session过期时间
3 session.setAttribute("userLogin", model);