Facebook PHP SDK - 如何获取访问令牌？
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Facebook PHP SDK - How to get access token?
提问by user1049961
I'm trying to post on user's Facebook wall from my app. The user granted the permissions to the app to post on his wall, and I have userid in db. I need to send the post automatically, without the user logging in again.
我正在尝试通过我的应用在用户的 Facebook 墙上发帖。用户授予应用程序在他的墙上张贴的权限，而我在 db 中有用户 ID。我需要自动发送帖子，而无需用户再次登录。
My code is:
我的代码是：
try{
require_once(dirname(__FILE__) . '\lib\facebook-php\src\facebook.php' );
}
catch(Exception $o){
print_r($o);
}
$config = array(
'appId' => '123456',
'secret' => '454544',
'allowSignedRequest' => false // optional but should be set to false for non-canvas apps
);
$facebook = new Facebook($config);
$user_id = $facebook->getUser();
$user_id = '123456';
if($user_id) {
// We have a user ID, so probably a logged in user.
// If not, we'll get an exception, which we handle below.
try {
$ret_obj = $facebook->api('/me/feed', 'POST',
array(
'access_token' => $facebook->getAccessToken(),
'link' => 'www.example.com',
'message' => 'Posting with the PHP SDK!'
));
echo '<pre>Post ID: ' . $ret_obj['id'] . '</pre>';
// Give the user a logout link
echo '<br /><a href="' . $facebook->getLogoutUrl() . '">logout</a>';
} catch(FacebookApiException $e) {
// If the user is logged out, you can have a
// user ID even though the access token is invalid.
// In this case, we'll get an exception, so we'll
// just ask the user to login again here.
var_dump($e);
$login_url = $facebook->getLoginUrl( array(
'scope' => 'publish_stream'
));
echo 'Please <a href="' . $login_url . '">login.</a>';
error_log($e->getType());
error_log($e->getMessage());
}
} else {
// No user, so print a link for the user to login
// To post to a user's wall, we need publish_stream permission
// We'll use the current URL as the redirect_uri, so we don't
// need to specify it here.
$login_url = $facebook->getLoginUrl( array( 'scope' => 'publish_stream' ) );
echo 'Please <a href="' . $login_url . '">login.</a>';
}
This throws An active access token must be used to query information about the current user.error and asks for login. After I click login, the post is sucesfully posted.
这会引发An active access token must be used to query information about the current user.错误并要求登录。单击登录后，该帖子已成功发布。
How can I get the access token with userid without the user logging in?
如何在没有用户登录的情况下使用 userid 获取访问令牌？
回答by Abhik Chakraborty
This happens when the active access token is not available while calling the API end point /me
当调用 API 端点时活动访问令牌不可用时会发生这种情况 /me
There are two solutions to get rig of this
有两种解决方案可以解决这个问题
use the userid instead of /me
set the access-token prior sending the api call
使用用户 ID 而不是 /me
在发送 api 调用之前设置访问令牌
For the first you can make the call as
首先，您可以拨打电话
ret_obj = $facebook->api('/'.$user_id.'/feed', 'POST',
array(
'link' => 'www.example.com',
'message' => 'Posting with the PHP SDK!'
));
You dont need to send 'access_token' => $facebook->getAccessToken(),
你不需要发送 'access_token' => $facebook->getAccessToken(),
The Second option is to do as
第二种选择是做
$access_token = $facebook->getAccessToken();
$facebook->setAccessToken($access_token);
ret_obj = $facebook->api('/me/feed', 'POST',
array(
'link' => 'www.example.com',
'message' => 'Posting with the PHP SDK!'
));
NOTE: publish_streamscope must be send while doing the login
注意：publish_stream登录时必须发送范围
Deprecation Notice :publish_streamwas replaced by publish_actions, check the facebook doc for permission
弃用通知：publish_stream已被替换publish_actions，请查看 facebook 文档以获得许可
回答by Nishant Solanki
you have to get permission . Check it out here
你必须得到许可。在这里查看
