项目是在用户登陆成功后，随即生成一个数，“token”作为键添加到cookie中，在eclipse中跑，用360，谷歌浏览器访问都能看到有这个cookie值，但是部署到远程tomcat服务器上，再访问就没有看到cookie值了
@RequestMapping(value="/user/login", method=RequestMethod.POST)

@ResponseBody
public E3Result login(String username, String password,
        HttpServletRequest request, HttpServletResponse response) {
    E3Result e3Result = loginService.userLogin(username, password);
    //判断是否登录成功
    if(e3Result.getStatus() == 200) {
        String token = e3Result.getData().toString();
        //如果登录成功需要把token写入cookie
        CookieUtils.setCookie(request, response, "token", token);
        
    }
    
    //返回结果
    return e3Result;
}

public E3Result userLogin(String username, String password) {

    // 1、判断用户和密码是否正确
    //根据用户名查询用户信息
    TbUserExample example = new TbUserExample();
    Criteria criteria = example.createCriteria();
    criteria.andUsernameEqualTo(username);
    //执行查询
    List<TbUser> list = userMapper.selectByExample(example);
    if (list == null || list.size() == 0) {
        //返回登录失败
        return E3Result.build(400, "用户名或密码错误");
    }
    //取用户信息
    TbUser user = list.get(0);
    //判断密码是否正确
    if (!DigestUtils.md5DigestAsHex(password.getBytes()).equals(user.getPassword())) {
        // 2、如果不正确，返回登录失败
        return E3Result.build(400, "用户名或密码错误");
    }
    // 3、如果正确生成token。
    String token = UUID.randomUUID().toString();
    // 4、把用户信息写入redis，key：token value：用户信息
    
    user.setPassword(null);
    jedisClient.set("SESSION:" + token, JsonUtils.objectToJson(user));
    // 5、设置Session的过期时间
    jedisClient.expire("SESSION:" + token, SESSION_EXPIRE);
    // 6、把token返回
     
    return E3Result.ok(token);
}

private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,

        String cookieName, String cookieValue, int cookieMaxage, boolean isEncode) {
    try {
        if (cookieValue == null) {
            cookieValue = "";
        } else if (isEncode) {
            cookieValue = URLEncoder.encode(cookieValue, "utf-8");
        }
        Cookie cookie = new Cookie(cookieName, cookieValue);
        if (cookieMaxage > 0)
            cookie.setMaxAge(cookieMaxage);
        if (null != request) {// 设置域名的cookie
            String domainName = getDomainName(request);
            System.out.println(domainName);
            if (!"localhost".equals(domainName)) {
                cookie.setDomain(domainName);
            }
        }
        cookie.setPath("/");
        response.addCookie(cookie);
    } catch (Exception e) {
         e.printStackTrace();
    }
}