Question

我正在尝试使用YouTube上提供的PacketCode教程来学习Facebook集成。代码在我的localhost上工作正常（即使通过登录到facebook进行测试）。但是当我试图在Hostinger.in免费主机上运行代码时，它显示以下错误：

致命错误：在@home/u315632576/public_html/fblogin-basic-master/lib/Facebook/HttpClients/FacebookCurlHttpClient.php:142堆栈跟踪中未捕获的异常'Facebook \ FacebookSDKException'，消息'无法连接到主机' ：＃0 /home/u315632576/public_html/fblogin-basic-master/lib/Facebook/FacebookRequest.php(248):Facebook \ HttpClients \ FacebookCurlHttpClient-＆gt; send（'https://graph.f ...'，'GET '，数组）＃1 /home/u315632576/public_html/fblogin-basic-master/lib/Facebook/FacebookRedirectLoginHelper.php(146):Facebook \ FacebookRequest-＆gt; execute（）＃2 / home / u315632576 / public_html / fblogin- basic-master / index.php（54）：Facebook / FacebookRedirectLoginHelper-＆gt; getSessionFromRedirect（）＃main {main}引自/home/u315632576/public_html/fblogin-basic-master/lib/Facebook/HttpClients/FacebookCurlHttpClient.php on第142行

在此之后，我尝试通过在付费托管服务器上请求付费主机所有者来运行此代码，但代码仍能正常运行。那么Hostinger.in免费主机服务器会出现什么问题？

代码：

/* INCLUSION OF LIBRARY FILEs*/
    require_once( 'lib/Facebook/FacebookSession.php');
    require_once( 'lib/Facebook/FacebookRequest.php' );
    require_once( 'lib/Facebook/FacebookResponse.php' );
    require_once( 'lib/Facebook/FacebookSDKException.php' );
    require_once( 'lib/Facebook/FacebookRequestException.php' );
    require_once( 'lib/Facebook/FacebookRedirectLoginHelper.php');
    require_once( 'lib/Facebook/FacebookAuthorizationException.php' );
    require_once( 'lib/Facebook/GraphObject.php' );
    require_once( 'lib/Facebook/GraphUser.php' );
    require_once( 'lib/Facebook/GraphSessionInfo.php' );
    require_once( 'lib/Facebook/Entities/AccessToken.php');
    require_once( 'lib/Facebook/HttpClients/FacebookCurl.php' );
    require_once( 'lib/Facebook/HttpClients/FacebookHttpable.php');
    require_once( 'lib/Facebook/HttpClients/FacebookCurlHttpClient.php');

/* USE NAMESPACES */

    use Facebook\FacebookSession;
    use Facebook\FacebookRedirectLoginHelper;
    use Facebook\FacebookRequest;
    use Facebook\FacebookResponse;
    use Facebook\FacebookSDKException;
    use Facebook\FacebookRequestException;
    use Facebook\FacebookAuthorizationException;
    use Facebook\GraphObject;
    use Facebook\GraphUser;
    use Facebook\GraphSessionInfo;
    use Facebook\FacebookHttpable;
    use Facebook\FacebookCurlHttpClient;
    use Facebook\FacebookCurl;

/*PROCESS*/

    //1.Stat Session
     session_start();
    //2.Use app id,secret and redirect url
     $app_id = 'xyz';
     $app_secret = 'abcd';
     $redirect_url='http://www.rohansanap.com/fblogin-basic-master/';

     //3.Initialize application, create helper object and get fb sess
     FacebookSession::setDefaultApplication($app_id,$app_secret);
     $helper = new FacebookRedirectLoginHelper($redirect_url);
     $sess = $helper->getSessionFromRedirect();

    //4. if fb sess exists echo name 
        if(isset($sess)){
            //create request object,execute and capture response
        $request = new FacebookRequest($sess, 'GET', '/me');
        // from response get graph object
        $response = $request->execute();
        $graph = $response->getGraphObject(GraphUser::className());
        // use graph object methods to get user details
        $name= $graph->getName();
        echo "hi $name";
    }else{
        //else echo login
        echo '<a href='.$helper->getLoginUrl().'>Login with facebook</a>';
    }

编辑1：我上面已经提到相同的代码在localhost上工作正常。我刚刚意识到它在第一次运行时工作正常，如果我在那之后刷新页面，则会显示相同的错误！

Answer 1

您的服务器可能会阻止传出的CURL请求，请联系您的提供商并询问他是否可以打开对Facebook API服务器的访问权限（graph.facebook.com）。 see this.

Facebook登录集成未捕获异常“无法连接到主机”

1 个答案: