Facebook Graph API：在发布到FB之前获取链接标题/标题/图片/描述

Question

I would like to show the automatically generated name, caption, description and picture from a URL before posting it to Facebook in my app.

This way the user can enter a URL and see what the defaults will be. If they wish to change the title/caption/picture/description before posting the link via the Graph API then they can.

Is there a way to do this through the Graph API, or would I need to build my own simple scraper and look for relevant meta tags myself?

Cheers, Dave

--

Edit: Thanks @CBroe for the answer. Here's a dirty example in PHP for anyone else:

$url = 'http://google.com';
$ch = curl_init('https://graph.facebook.com/');
curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch, CURLOPT_POST,true);
curl_setopt($ch, CURLOPT_POSTFIELDS,array(
    'id' => $url,
    'scrape' => true,
));
$data = json_decode(curl_exec($ch),true);
print_r($data);

example output

Array
(
    [url] => http://www.google.com/
    [type] => website
    [title] => Google
    [image] => Array
        (
            [0] => Array
                (
                    [url] => http://www.google.com/images/google_favicon_128.png
                )

        )

    [description] => Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for.
    [updated_time] => 2014-04-02T10:41:44+0000
    [id] => 381702034999
)

works in app:

Answer 1

See Updating Objects in Facebook's Open Graph documentation.

You can make a POST call to the API to get any URL scraped, and (on success) it will return you the “all the information about the object that was scraped” in JSON format.