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如何在我的頁面粉絲牆上使用c#和asp.net在Facebook上發帖

[英]How to do a post in facebook on my page fan wall with c# and asp.net

我嘗試了3天后如何用c#創建一個帖子我的粉絲頁面牆,我注意到兩件事情: - Facebook提供沒有更新的文檔,沒有完整和糟糕的例子(經常api更改) - Facebook經常更改他的api和很多帖子是痴迷的。 有人可以糾正我的代碼或提供完整的優秀代碼嗎?

這是我的代碼:

  if (String.IsNullOrEmpty(Request.QueryString["code"]))
            {
                Response.Redirect("https://graph.facebook.com/oauth/authorize?client_id=157873644371673&redirect_uri=http://localhost:2551/Default.aspx&scope=publish_stream,manage_pages,offline_access&display=popup");
            }
            else
            {

    FacebookClient fb = new FacebookClient();
                    dynamic result1 = fb.Get("oauth/access_token", new
                    {
                        client_id = "MY_APP_ID",
                        client_secret = "MY_SECRET_ID",
                        grant_type = "client_credentials",
                        redirect_uri = "www.mysite.com"
                    });

                    fb.AppId = "MY_APP_ID";
                    fb.AppSecret = "MY_SECRET_ID";
                    fb.AccessToken = result1.access_token;

                     dynamic parameters = new ExpandoObject();
                    parameters.message = "Check out this funny article";
                    parameters.link = "http://www.example.com/article.html";
                    parameters.picture = "http://www.example.com/article-thumbnail.jpg";
                    parameters.name = "Article Title";
                    parameters.caption = "Caption for the link";
                    parameters.description = "Longer description of the link";
                    parameters.req_perms = "manages_pages";
                    parameters.scope = "manages_pages";

                    parameters.actions = new
                    {
                        name = "View on Zombo",
                        link = "www.zombo.com",
                    };
                    parameters.privacy = new
                    {
                        value = "ALL_FRIENDS",
                    };

                    try
                    {
                        var result = fb.Post("/" + "MY_FACEBOOK_FAN_PAGE_ID" + "/feed", parameters);
                    }
                    catch (FacebookOAuthException ex)
                    {
                        //handle something
                        Response.Write(ex.Message);
                    }
}

我希望這篇文章能為很多人提供幫助,我試着簡單明了:

1 - 創建您的facebook開發者帳戶,並在您的計算機( localhost )中測試您的代碼,在“使用facebook身份驗證進行網站身份驗證”字段中設置您的localhost地址。 對我來說,它將是http://localhost:2551/Default.aspx ,例如因為我在我的wweb應用程序的Defaut.aspx中測試。 當你在網站上部署時,你將改變這個地址(對我而言,在我的網站上部署代碼之前,我將使用http://www.mywebsiteurl.com/Default.aspx進行更改)。

2-使用您的Facebook用戶帳戶,創建您的粉絲頁面。

3 - 當您創建粉絲頁面時,請轉到您的粉絲頁面,查看URL以獲取您的PAGE_ID例如我的http://www.facebook.com/pages/toto/446533181408238?ref=ts&fref=ts所以我的PAGE_ID是446533181408238

3-它幾乎完成了,只是一個小小的解釋:因為我創建了粉絲頁面,我是粉絲頁面的管理員,我必須要求自動發布到Facebook發布自我的開發者帳戶,所以我必須得到2個動作的autorisation:publish_stream和manage_pages。

我們去編碼:

  private void Do()
        {
            string app_id = "157873644371675";
            string app_secret = "c27a10c347af4280720fa3d76c9ae08c";
            string scope = "publish_stream,manage_pages";

            if (Request["code"] == null)
            {
                Response.Redirect(string.Format(
                    "https://graph.facebook.com/oauth/authorize?client_id={0}&redirect_uri={1}&scope={2}",
                    app_id, Request.Url.AbsoluteUri, scope));
            }
            else
            {
                Dictionary<string, string> tokens = new Dictionary<string, string>();

                string url = string.Format("https://graph.facebook.com/oauth/access_token?client_id={0}&redirect_uri={1}&scope={2}&code={3}&client_secret={4}",
                    app_id, Request.Url.AbsoluteUri, scope, Request["code"].ToString(), app_secret);

                HttpWebRequest request = System.Net.WebRequest.Create(url) as HttpWebRequest;

                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream());

                    string vals = reader.ReadToEnd();

                    foreach (string token in vals.Split('&'))
                    {
                        //meh.aspx?token1=steve&token2=jake&...
                        tokens.Add(token.Substring(0, token.IndexOf("=")),
                            token.Substring(token.IndexOf("=") + 1, token.Length - token.IndexOf("=") - 1));
                    }
                }

                string access_token = tokens["access_token"];

                var client = new FacebookClient(access_token);

                dynamic parameters = new ExpandoObject();
                parameters.message = "Check out this funny article";
                parameters.link = "http://www.natiska.com/article.html";
                parameters.picture = "http://www.natiska.com/dav.png";
                parameters.name = "Article Title";
                parameters.caption = "Caption for the link";

                //446533181408238 is my fan page
                client.Post("/446533181408238/feed", parameters);

            }
              }

您通過Graph API請求傳遞的參數存在一些問題。

  1. 您沒有有效地要求權限:
    • 不推薦使用req_perms參數並將其替換為scope
    • 權限是通過登錄鏈接傳遞的,而不是與圖譜API請求一起傳遞的!
  2. action字段需要一個數組,privacy字段需要一個JSON

數組的外觀如下: "actions": {'value': 'CUSTOM', 'allow': '{friend-list-id}'}

JSON的外觀如何:

"privacy": [   
    {
      "name": "Comment", 
      "link": "https://www.facebook.com/1234567890/posts/09876543210987654321"
    }, 
    {
      "name": "Like", 
      "link": "https://www.facebook.com/1234567890/posts/09876543210987654321"
    }
]

我使用以下代碼將圖像發布到我的Facebook頁面牆

 string app_id = "*************";
string app_secret = "*************";
string scope = "publish_actions,manage_pages";
string accessToken = GetAccessToken(FacebookAppId, FacebookAppSecret);
            if (Request["code"] == null)
            {
Response.Redirect(string.Format("https://graph.facebook.com/oauth/authorize?client_id={0}&redirect_uri={1}&scope={2}",app_id, Request.Url.AbsoluteUri, scope));
            }
            else
            {
                FacebookClient fb = new FacebookClient();
                dynamic result1 = fb.Get("oauth/access_token", new
                {
                    client_id = "******",
                    client_secret = "*************",
                    grant_type = "publish_actions,manage_pages",
                    redirect_uri = "*************"
                });

                fb.AppId = "MY_APP_ID";
                fb.AppSecret = "MY_SECRET_ID";
                fb.AccessToken = result1.access_token;
// to make new object
                dynamic parameters = new ExpandoObject();
                parameters.message = "Check out this funny article";
                parameters.link = "*************";
                parameters.picture = "*************";
                parameters.name = "*************";
                parameters.caption = "*************";
                parameters.description = "*************";
                parameters.req_perms = "*************";
                parameters.scope = "*************";

                parameters.actions = new
                {
                    name = "*************",
                    link = "*************",
                };
                parameters.privacy = new
                {
                    value = "*************",
                };

                try
                {
                    var result = fb.Post("/" + "*************" + "/feed", parameters);
                }

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