如何使用Facebook Javascript SDK創建頁面帖子？

Question

我需要能夠使用Facebook Javascript SDK發布到用戶的業務頁面。

我已經成功地將用戶登錄到Facebook，但是當我嘗試使用將功能發布到用戶頁面時，什么也沒有發生。 我什至嘗試將自己的頁面ID手動輸入到該函數中以使其正常工作，但仍然沒有任何反應。

我使用從Facebook文檔中獲得的以下JavaScript登錄我的用戶，並且可以正常運行。

<script>

  // This is called with the results from from FB.getLoginStatus().
  function statusChangeCallback(response) {
    console.log('statusChangeCallback');
    console.log(response);
    // The response object is returned with a status field that lets the
    // app know the current login status of the person.
    // Full docs on the response object can be found in the documentation
    // for FB.getLoginStatus().
    if (response.status === 'connected') {
      // Logged into your app and Facebook.
      testAPI();
    } else {
      // The person is not logged into your app or we are unable to tell.
      document.getElementById('status').innerHTML = 'Please log ' +
        'into this app.';
    }
  }

  // This function is called when someone finishes with the Login
  // Button.  See the onlogin handler attached to it in the sample
  // code below.
  function checkLoginState() {
    FB.getLoginStatus(function(response) {
      statusChangeCallback(response);
    });
  }

  window.fbAsyncInit = function() {
    FB.init({
      appId      : 'my app id',
      cookie     : true,  // enable cookies to allow the server to access 
                          // the session
      xfbml      : true,  // parse social plugins on this page
      version    : 'v3.3' // The Graph API version to use for the call
    });

    // Now that we've initialized the JavaScript SDK, we call 
    // FB.getLoginStatus().  This function gets the state of the
    // person visiting this page and can return one of three states to
    // the callback you provide.  They can be:
    //
    // 1. Logged into your app ('connected')
    // 2. Logged into Facebook, but not your app ('not_authorized')
    // 3. Not logged into Facebook and can't tell if they are logged into
    //    your app or not.
    //
    // These three cases are handled in the callback function.

    FB.getLoginStatus(function(response) {
      statusChangeCallback(response);
    });

  };

  // Load the SDK asynchronously
  (function(d, s, id) {
    var js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return;
    js = d.createElement(s); js.id = id;
    js.src = "https://connect.facebook.net/en_US/sdk.js";
    fjs.parentNode.insertBefore(js, fjs);
  }(document, 'script', 'facebook-jssdk'));

  // Here we run a very simple test of the Graph API after login is
  // successful.  See statusChangeCallback() for when this call is made.
  function testAPI() {
    console.log('Welcome!  Fetching your information.... ');
    FB.api('/me', function(response) {
      console.log('Successful login for: ' + response.name);
      document.getElementById('status').innerHTML =
        'Thanks for logging in, ' + response.name + '!';
    });
        }

    </script>

然后，我更改了代碼，以添加一個名為postapi（）的函數來測試已登錄用戶頁面上的帖子，如下所示：

<script>
        function postapi() {
            FB.api(
                '/{your-page-id}/feed',
                'POST',
                { "message": "Awesome!" },
                function (response) {
                    // Insert your code here
                });
        }
  // This is called with the results from from FB.getLoginStatus().
  function statusChangeCallback(response) {
    console.log('statusChangeCallback');
    console.log(response);
    // The response object is returned with a status field that lets the
    // app know the current login status of the person.
    // Full docs on the response object can be found in the documentation
    // for FB.getLoginStatus().
    if (response.status === 'connected') {
      // Logged into your app and Facebook.
      testAPI();
    } else {
      // The person is not logged into your app or we are unable to tell.
      document.getElementById('status').innerHTML = 'Please log ' +
        'into this app.';
    }
  }

  // This function is called when someone finishes with the Login
  // Button.  See the onlogin handler attached to it in the sample
  // code below.
  function checkLoginState() {
    FB.getLoginStatus(function(response) {
      statusChangeCallback(response);
    });
  }

  window.fbAsyncInit = function() {
    FB.init({
      appId      : 'my app id',
      cookie     : true,  // enable cookies to allow the server to access 
                          // the session
      xfbml      : true,  // parse social plugins on this page
      version    : 'v3.3' // The Graph API version to use for the call
    });

    // Now that we've initialized the JavaScript SDK, we call 
    // FB.getLoginStatus().  This function gets the state of the
    // person visiting this page and can return one of three states to
    // the callback you provide.  They can be:
    //
    // 1. Logged into your app ('connected')
    // 2. Logged into Facebook, but not your app ('not_authorized')
    // 3. Not logged into Facebook and can't tell if they are logged into
    //    your app or not.
    //
    // These three cases are handled in the callback function.

    FB.getLoginStatus(function(response) {
      statusChangeCallback(response);
    });

  };

  // Load the SDK asynchronously
  (function(d, s, id) {
    var js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return;
    js = d.createElement(s); js.id = id;
    js.src = "https://connect.facebook.net/en_US/sdk.js";
    fjs.parentNode.insertBefore(js, fjs);
  }(document, 'script', 'facebook-jssdk'));

  // Here we run a very simple test of the Graph API after login is
  // successful.  See statusChangeCallback() for when this call is made.
  function testAPI() {
    console.log('Welcome!  Fetching your information.... ');
    FB.api('/me', function(response) {
      console.log('Successful login for: ' + response.name);
      document.getElementById('status').innerHTML =
        'Thanks for logging in, ' + response.name + '!';
    });
        }

    </script>

然后，我使用按鈕打開登錄對話框，並請求適當的權限，如下所示：

<fb:login-button scope="manage_pages,publish_pages,pages_show_list" onlogin="checkLoginState();">
</fb:login-button>

通過在文本框中顯示用戶訪問令牌，我成功測試了一下是否確實存儲了用戶的訪問令牌：

function placetoken() {
            var user_access_token = FB.getAuthResponse()['accessToken'];
            document.getElementById("<%=TextBox1.ClientID%>").value=user_access_token;
        }

現在，我需要能夠使用用戶訪問令牌來獲取用戶管理的頁面列表（包括頁面ID和頁面訪問令牌），以便他們可以選擇要發布到的頁面。

我努力了：

var user_pages=FB.api('/me/accounts', 'GET');

但我不知道如何捕獲api返回的內容。

我希望能夠使用Facebook Javascript SDK登錄用戶並發布到其業務頁面。

Answer 1

在頁面供稿上進行發布需要對特定頁面有效的頁面令牌，包括頁面管理員授予的所有必需權限。 因此，您首先需要獲取具有登錄名的manage_pages權限，為該特定頁面請求頁面令牌（例如，通過/ me / accounts），然后進行實際的發布feed調用。

Answer 2

為了發布到頁面（作為頁面，這是唯一的選擇），您需要執行以下操作：

• 使用manage_pages和publish_pages權限進行授權。
• 使用/page-id?fields=access_token獲取相關頁面的頁面令牌
• 使用頁面令牌通過/me/feed

帶頁面令牌的示例請求：

FB.api(
    '/me/feed',
    'POST',
    {message: 'Awesome!', access_token: 'the-page-token'},
    function (response) {
        // Insert your code here
    }
);

請注意，除非您將應用程序投入使用並獲得Facebook審閱的所需權限，否則只有在該應用程序中具有角色的用戶才能看到該新帖子。