code: public boolean validToken(String token, String openid) {
          BeanUtil.requireNonNull(token, "token is null");
          BeanUtil.requireNonNull(openid, "openid is null");
          String url = BASE_API_URL + "sns/auth?access_token=" + token + "&openid=" + openid;
          BaseResponse r = executeGet(url);
          return isSuccess(r.getErrcode());
      }
docs: 校验token是否合法有效
  
  @param token  token
  @param openid 用户openid
  @return 是否合法有效