Question

我刚从facebook复制了以下脚本 https://developers.facebook.com/docs/php/gettingstarted

我使用composer

下载了主代码

 <?php
    session_start();
    require_once '../../Facebook/autoload.php';
    print_r($_SESSION);
    //if(!isset($_SESSION['user']) || ($_SESSION['user'] < 1) || ($_SESSION['user'] == '')){
        $fb = new Facebook\Facebook([
      'app_id' => '1444966872674589',
      'app_secret' => '54362fa0c423jdui348758ea172537fb',
      'default_graph_version' => 'v2.5',
      ]);   

      $helper = $fb->getCanvasHelper();
      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)) {
        try {
          $response = $fb->get('/me');
          $userNode = $response->getGraphUser();
        } 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;
        }

        echo 'Logged in as ' . $userNode->getName();
        print_r($userNode->getName());
      } 


    //}

但是上面的代码会抛出错误

  Fatal error: Uncaught exception 'Facebook\Exceptions\FacebookSDKException' with message 'Signed request has an invalid signature.'

我已阅读此链接
Integrating facebook in php giving invalid signed request with oAuth data

和

Integrating facebook php sdk in Facebook Canvas App giving Blank page or oauthData error

但它并没有解决我的问题

请帮助我解决问题

Answer 1

如果您从网站上调用脚本，可以试试这个：

替换：

$helper = $fb->getCanvasHelper();

使用：

$helper = $fb->getRedirectLoginHelper();

也取代：

if (isset($accessToken)) {
    try {
      $response = $fb->get('/me');
      $userNode = $response->getGraphUser();
    } 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;
    }

    echo 'Logged in as ' . $userNode->getName();
    print_r($userNode->getName());
  }

使用：

$permissions = 'list of facebook permissions';///optional

if (isset($accessToken)) {
    try {
      $response = $fb->get('/me');
      $userNode = $response->getGraphUser();
    } 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;
    }

    echo 'Logged in as ' . $userNode->getName();
    print_r($userNode->getName());
  }else{
       $loginUrl = $helper->getLoginUrl('url-of-calling-script.php', $permissions);
       echo "<script>window.top.location.href='".$loginUrl."'</script>";
  }

Facebook：致命错误：未捕获的异常＆＃39; Facebook \ Exceptions \ FacebookSDKException＆＃39;邮件＆＃39;签名请求的签名无效。＆＃39;

1 个答案: