/**
  * 
  * 访问api
  * @param $path  api url的path部分,例如:/user/profile(path 必须以/开头)
  * @param $params   参数数组
  * @param $method  GET/POSt
  * @param $macKey 下发的mac key
  * @return array / false
  */
 public function callApiSelfSign($path, $params = array(), $macKey, $method = 'GET')
 {
     // 获取nonce  随机数:分钟
     $nonce = XMUtil::getNonce();
     $path = $path;
     if (!array_search('clientId', $params)) {
         $params['clientId'] = $this->clientId;
     }
     if (!array_search('token', $params)) {
         $params['token'] = $this->accessToken;
     }
     $sign = XMUtil::buildSignature($nonce, $method, $this->getApiHost(), $path, $params, $macKey);
     $header = XMUtil::buildMacRequestHead($this->accessToken, $nonce, $sign);
     return $this->callApi($path, $params, false, $header, $method);
 }
            // mac access type
            //  token有较长的有效期,可以存储下来,不必每次去获取token
            var_dump($token);
            // 拿到token id
            $tokenId = $token->getAccessTokenId();
            // 创建api client
            $xmApiClient = new XMApiClient($clientId, $tokenId);
            // 获取nonce  随机数:分钟
            $nonce = XMUtil::getNonce();
            $path = $userProfilePath;
            $method = "GET";
            $params = array('token' => $tokenId, "clientId" => $clientId);
            // 计算签名
            $sign = XMUtil::buildSignature($nonce, $method, $xmApiClient->getApiHost(), $path, $params, $token->getMacKey());
            // 构建header
            $head = XMUtil::buildMacRequestHead($tokenId, $nonce, $sign);
            // 访问api
            $result = $xmApiClient->callApi($userProfilePath, $params, false, $head);
            // 返回json
            print '<br><br>';
            var_dump($result);
            print '<br><br>';
            $result = $xmApiClient->callApiSelfSign($userProfilePath, array(), $token->getMacKey());
            // 返回json
            var_dump($result);
        }
    } else {
        print "Get token Error";
    }
} else {
    print "Get code error : " . $_GET["error"] . "  error description : " . $_GET["error_description"];