facebook php Graph在登录时返回错误

Posted 2023-02-24

【中文标题】facebook php Graph在登录时返回错误

【英文标题】：facebook php Graph returns error at login time

【发布时间】：2018-06-19 03:05:22

【问题描述】：

登录 facebook 时出现此错误：

图表返回错误：验证验证码时出错。请 确保您的 redirect_uri 与您在 OAuth 对话请求

应用内Valid OAuth Redirect URIs链接：

https://hellodesign.com.br/facebook/fb-callback.php/

登录.php：

<?php
if(!session_id()) 
    session_start();

require_once __DIR__ . '/Facebook/autoload.php'; 
$fb = new Facebook\Facebook([
  'app_id' => '2228345017345646', // Replace app-id with your app id
  'app_secret' => 'd17ad39dfr56yghgfe342020e4e',
  'default_graph_version' => 'v3.0',
  ]);
$helper = $fb->getRedirectLoginHelper();
$_SESSION['FBRLH_state']=$_GET['state'];
$permissions = ['email']; // Optional permissions
$loginUrl = $helper->getLoginUrl('https://hellodesign.com.br/facebook/fb-callback.php/', $permissions);
echo '<a href="' . htmlspecialchars($loginUrl) . '">Log in with Facebook!</a>';
?> 

回调：

<?php
    if(!session_id()) 
        session_start();
    
    require_once __DIR__ . '/Facebook/autoload.php'; 
    $fb = new Facebook\Facebook([
  'app_id' => '2228345017345646', // Replace app-id with your app id
  'app_secret' => 'd17ad39dfr56yghgfe342020e4e',
  'default_graph_version' => 'v3.0',
      ]);
    $helper = $fb->getRedirectLoginHelper();
    $_SESSION['FBRLH_state']=$_GET['state'];
    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: https://example.com/members.php');
    ?>

现场测试页面：https://www.hellodesign.com.br/facebook/login.php

【问题讨论】：

Facebook login: Please make sure your redirect_uri is identical to the one you used in the OAuth dialog的可能重复

您的重定向 URI 是否故意带有斜杠，或者......？

@CBros 没有使用斜线的目的......我只是在谷歌上搜索，有人说这很好，事实上我用和不带斜线测试它，并且有相同的。

@RedBottle 看看这个并告诉我是否有区别 1) ibb.co/gYXcjd 2) ibb.co/f0Amcy 3) ibb.co/e9ECHy

【参考方案1】：

我已经解决了添加

$accessToken = $helper->getAccessToken('https://hellodesign.com.br/facebook/fb-callback.php/');