Facebook PHP SDK 5 :: API 2.4 ::跨站点请求伪造验证失败。所需的参数“状态”失踪 [英] Facebook PHP SDK 5 :: API 2.4 :: Cross-site request forgery validation failed. Required param "state" missing
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问题描述
我做了一个非常简单的PHP脚本,只是想通过Facebook登录并获得accessToken。但是当我尝试以下代码时,我从SDK中获得了异常:跨站点请求伪造验证失败。所需的参数状态丢失。 »。
I did a very simple PHP script, just to try to login via Facebook and get an accessToken. But when I try the following code, I get an Exception from the SDK : « Cross-site request forgery validation failed. Required param "state" missing. ».
这是我的代码:
require_once __DIR__ . '/facebook-sdk-v5/autoload.php';
session_start();
$fb = new Facebook\Facebook([
'app_id' => '{my-own-app-id}',
'app_secret' => '{my-own-app-secret}'
]);
// Check to see if we already have an accessToken ?
if (isset($_SESSION['facebook_access_token'] )) {
$accessToken = $_SESSION['facebook_access_token'];
echo "Horray we have our accessToken:$accessToken<br />\n";
} else {
// We don't have the accessToken
// But are we in the process of getting it ?
if (isset($_REQUEST['code'])) {
$helper = $fb->getRedirectLoginHelper();
try {
$accessToken = $helper->getAccessToken();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
if (isset($accessToken)) {
// Logged in!
$_SESSION['facebook_access_token'] = (string) $accessToken;
// Now you can redirect to another page and use the
// access token from $_SESSION['facebook_access_token']
echo "Finally logged in! Token:$accessToken";
}
} else {
// Well looks like we are a fresh dude, login to Facebook!
$helper = $fb->getRedirectLoginHelper();
$permissions = ['email', 'user_likes']; // optional
$loginUrl = $helper->getLoginUrl('http://mywebsite.com/myapp/index.php', $permissions);
echo '<a href="' . $loginUrl . '">Log in with Facebook!</a>';
}
}
exit;
推荐答案
我不得不在一些服务器中添加这行: / p>
I had to add this lines in some servers:
$helper = $fb->getRedirectLoginHelper();
if (isset($_GET['state'])) {
$helper->getPersistentDataHandler()->set('state', $_GET['state']);
}
根据服务器配置,我会随机收到此错误。
I get this error randomly, depending of the server config.
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