Facebook php sdk问题：请确保您的redirect_uri与您在OAuth对话框请求中使用的一致。

Question

图返回了错误：验证验证码时出错。请确保您的REDIRECT_URI等同于你在OAuth对话请求中使用

我不知道如何解决的一个它

的login.php

<? 
session_start(); 
$fb = new Facebook\Facebook([ 
'app_id' => '$id', // Replace {app-id} with your app id 
'app_secret' => '$secret', 
'default_graph_version' => 'v2.2', 
]); 

$helper = $fb->getRedirectLoginHelper(); 

$permissions = ['email']; // Optional permissions 
$loginUrl = $helper->getLoginUrl('http://localhost:80/fb_test/fb- 
callback.php', $permissions); 

echo '<a href="' . htmlspecialchars($loginUrl) . '">Log in with Facebook! 
</a>'; 
?> 

FB-callback.php

<? 
session_start(); 

$fb = new Facebook\Facebook([ 
'app_id' => '1428245583931211', // Replace {app-id} with your app id 
'app_secret' => 'cf045e5b4da0abf920b01447f23b09cd', 
'default_graph_version' => 'v2.2', 
]); 

$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($accessToken)) { 
if ($helper->getError()) { 
header('HTTP/1.0 401 Unauthorized'); 
echo "Error: " . $helper->getError() . "\n"; 
echo "Error Code: " . $helper->getErrorCode() . "\n"; 
echo "Error Reason: " . $helper->getErrorReason() . "\n"; 
echo "Error Description: " . $helper->getErrorDescription() . "\n"; 
} else { 
header('HTTP/1.0 400 Bad Request'); 
echo 'Bad request'; 
} 
exit; 
} 

// Logged in 
echo '<h3>Access Token</h3>'; 
var_dump($accessToken->getValue()); 

// The OAuth 2.0 client handler helps us manage access tokens 
$oAuth2Client = $fb->getOAuth2Client(); 

// Get the access token metadata from /debug_token 
$tokenMetadata = $oAuth2Client->debugToken($accessToken); 
echo '<h3>Metadata</h3>'; 
var_dump($tokenMetadata); 

// Validation (these will throw FacebookSDKException's when they fail) 
$tokenMetadata->validateAppId('{app-id}'); // Replace {app-id} with 
your app id 
// If you know the user ID this access token belongs to, you can validate it 
here 
//$tokenMetadata->validateUserId('123'); 
$tokenMetadata->validateExpiration(); 

if (! $accessToken->isLongLived()) { 
// Exchanges a short-lived access token for a long-lived one 
try { 
$accessToken = $oAuth2Client->getLongLivedAccessToken($accessToken); 
} catch (Facebook\Exceptions\FacebookSDKException $e) { 
echo "<p>Error getting long-lived access token: " . $helper->getMessage() . 
"</p>\n\n"; 
exit; 
} 

echo '<h3>Long-lived</h3>'; 
var_dump($accessToken->getValue()); 
} 

$_SESSION['fb_access_token'] = (string) $accessToken; 

// User is logged in with a long-lived access token. 
// You can redirect them to a members-only page. 
//header('Location: http:/localhost:80/fb_test/'); 
?> 

这是我的应用程序设置 enter image description here

Answer 1

getAccessToken方法为API调用生成重定向URI参数，以便根据当前URL为标记交换代码，如果没有显式传递。

因此，如果您未处理触发登录（意思是调用getLoginUrl）并在同一个脚本下处理返回的代码值，那么您必须明确地将第一个URL传递给getAccessToken它在设置API请求时设置相同的值，因为整个过程启动时指定了getLoginUrl。

try {$accessToken = $helper->getAccessToken('http(s)://whatever/path/login.php');