使用Facebook C#SDK发布到页面

Question

我一直在使用Facebook C#SDK,但有一个非常旧的版本,我仍在使用REST API(我认为).我只关心使用API​​发布到我自己的Facebook页面(我有一个WCMS插件,可以将内容发布到我们机构的Facebook页面).我想知道是否有人知道如何使用最新版本的SDK进行此设置的好教程？我也关注当offline_access消失时这是如何工作的,所以对此的任何想法都会受到赞赏.我宁愿不必每60天手动获取一个新的访问令牌.这似乎有点不必要,因为我用来发布的应用程序与我试图发布的页面位于同一个FB帐户中.

Answer 1

这是一种方法:

    public static string RefreshTokenAndPostToFacebook(string currentAccessToken)
    {
        string newAccessToken = RefreshAccessToken(currentAccessToken);
        string pageAccessToken = GetPageAccessToken(newAccessToken);
        PostToFacebook(pageAccessToken);
        return newAccessToken; // replace current access token with this
    }  

    public static string GetPageAccessToken(string userAccessToken)
    {
        FacebookClient fbClient = new FacebookClient();
        fbClient.AppId = "app id";
        fbClient.AppSecret = "app secret";
        fbClient.AccessToken = userAccessToken; 
        Dictionary<string, object> fbParams = new Dictionary<string, object>();
        JsonObject publishedResponse = fbClient.Get("/me/accounts", fbParams) as JsonObject;
        JArray data = JArray.Parse(publishedResponse["data"].ToString());

        foreach (var account in data)
        {
            if (account["name"].ToString().ToLower().Equals("your page name"))
            {
                return account["access_token"].ToString(); 
            }
        }

        return String.Empty; 
    }

    public static string RefreshAccessToken(string currentAccessToken)
    {
        FacebookClient fbClient = new FacebookClient();
        Dictionary<string, object> fbParams = new Dictionary<string, object>();
        fbParams["client_id"] = "app id";
        fbParams["grant_type"] = "fb_exchange_token";
        fbParams["client_secret"] = "app secret";
        fbParams["fb_exchange_token"] = currentAccessToken;            
        JsonObject publishedResponse = fbClient.Get("/oauth/access_token", fbParams) as JsonObject;
        return publishedResponse["access_token"].ToString(); 
    }

    public static void PostToFacebook(string pageAccessToken)
    {
        FacebookClient fbClient = new FacebookClient(pageAccessToken); 
        fbClient.AppId = "app id";
        fbClient.AppSecret = "app secret";
        Dictionary<string,object> fbParams = new Dictionary<string,object>();
        fbParams["message"] = "Test message";            
        var publishedResponse = fbClient.Post("/your_page_name/feed", fbParams);
    }