facebook访问令牌已过期

基于此，我使用以下URL

https://graph.facebook.com/oauth/access_token?client_id=APP_ID&client_secret=CLIENT_SECRET& grant_type=fb_exchange_token&fb_exchange_token=OLD_ACCESS_TOKEN

获取新的访问令牌，但我得到以下信息：

{“错误”：{ “消息”：“验证访问令牌时出错：会话已在unix时间1365257820过期。当前unix时间为1365759029。”， “类型”：“OAutheException”， “代码”：190， “错误\子代码”：463}

不起作用。谢谢你的帮助

编辑：明白了！这样工作

如果访问令牌过期，在服务器上存储后，首先在浏览器上运行下面的php脚本

<?php
  $app_id = "your app id";
  $app_secret = "your app secret"; 
  $my_url = "http://apps.facebook.com/your_app_name";

  // known valid access token stored in a database 
  $access_token = "your old access token";

  $code = $_REQUEST["code"];

  // If we get a code, it means that we have re-authed the user 
  //and can get a valid access_token. 
  if (isset($code)) {
    $token_url="https://graph.facebook.com/oauth/access_token?client_id="
      . $app_id . "&redirect_uri=" . urlencode($my_url) 
      . "&client_secret=" . $app_secret 
      . "&code=" . $code . "&display=popup";
    $response = file_get_contents($token_url);
    $params = null;
    parse_str($response, $params);
    $access_token = $params['access_token'];
  }


  // Attempt to query the graph:
  $graph_url = "https://graph.facebook.com/me?"
    . "access_token=" . $access_token;
  $response = curl_get_file_contents($graph_url);
  $decoded_response = json_decode($response);

  //Check for errors 
  if ($decoded_response->error) {
  // check to see if this is an oAuth error:
    if ($decoded_response->error->type== "OAuthException") {
      // Retrieving a valid access token. 
      $dialog_url= "https://www.facebook.com/dialog/oauth?"
        . "client_id=" . $app_id 
        . "&redirect_uri=" . urlencode($my_url);
      echo("<script> top.location.href='" . $dialog_url 
      . "'</script>");
    }
    else {
      echo "other error has happened";
    }
  } 
  else {
  // success
    echo("success" . $decoded_response->name);
    echo($access_token);
  }

  // note this wrapper function exists in order to circumvent PHP’s 
  //strict obeying of HTTP error codes.  In this case, Facebook 
  //returns error code 400 which PHP obeys and wipes out 
  //the response.
  function curl_get_file_contents($URL) {
    $c = curl_init();
    curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($c, CURLOPT_URL, $URL);
    $contents = curl_exec($c);
    $err  = curl_getinfo($c,CURLINFO_HTTP_CODE);
    curl_close($c);
    if ($contents) return $contents;
    else return FALSE;
  }
?>

创建应用程序
使用php后可以获得实时访问托克

$app_id = '{Application Id}';
$app_secret = '{Application Secret}';
$access_token = "https://graph.facebook.com/oauth/access_token?client_id=$app_id&client_secret=$app_secret&grant_type=client_credentials";
$access_token = file_get_contents($access_token); // returns 'accesstoken=APP_TOKEN|APP_SECRET'
$access_token = str_replace('access_token=', '', $access_token);

这意味着您的旧访问令牌已过期。你能用一个新的短期访问令牌重试同样的事情吗谢谢我用一个新的短期访问令牌做了这件事你刚刚写了访问令牌给世界，请小心。任何人都可能误用它。请不要只是发布一些代码作为答案。请解释一下你的逻辑。
$app_id = '{Application Id}';
$app_secret = '{Application Secret}';
$access_token = "https://graph.facebook.com/oauth/access_token?client_id=$app_id&client_secret=$app_secret&grant_type=client_credentials";
$access_token = file_get_contents($access_token); // returns 'accesstoken=APP_TOKEN|APP_SECRET'
$access_token = str_replace('access_token=', '', $access_token);

$app_id = 'APP_ID';
$app_secret = 'APP_SECRET';
$access_token_url = "https://graph.facebook.com/oauth/access_token?client_id=$app_id&client_secret=$app_secret&grant_type=client_credentials";
$access_token_data = file_get_contents($access_token_url);
$access_token_arr = json_decode($access_token_data);
$access_token = $access_token_arr->access_token;