从用户名检索Facebook用户标识 [英] Retrieve facebook user id from the username

问题描述

如果我有用户名，我想要检索一个Facebook用户ID。
这是从图API中弃用的，但是如果我有用户名，我想知道如何获取id。

I want to retrieve a Facebook user id if I have his username. This was deprecated from the graph API but I would like to know a work around on getting the id if i have the username.

有一个网站这样做，但我不知道他们是如何做到的。

There is a website that does that but I am not sure how they do it.

推荐答案

我做了R& D，发现给定的网站没有使用API​​从用户名中获取用户名。
他们正在使用另一种无效的机制。

I did the R&D and found that the given website is not using the API to fetch userid from the username. They are using another mechanism which is not valid.

我已经找到了一种从用户名中找到userid的机制。

I have found 1 mechanism to find the userid from the username.

下面是标识如何从用户名中找到userid的c＃代码。
我试图从Facebook的URL读取HTML。并尝试阅读下面的元标记来识别userid。

Below is the c# code which identify how to find userid from username. I tried to read the HTML from facebook url. and trying to read below meta tag to identify userid.

META代码

<meta property="al:android:url" content="fb://profile/USERID">

功能

public string findUserIdfromUsername(string facebookURL)
{
    try
    {
        HtmlWeb web = new HtmlWeb();
        HtmlDocument doc = web.Load(facebookURL);

        List<String> keyLst = doc.DocumentNode
                                .SelectSingleNode("//meta[@property='al:android:url']")
                                .Attributes["content"].Value
                                .Split(',').ToList();


        foreach (string strkey in keyLst)
        {
            string[] arrTemp = strkey.Split('/');
            int arrlength = arrTemp.Count();
            string facebookUserID = arrlength > 0 ? (arrTemp[arrlength - 1]) : strkey;
            facebookUserID = facebookUserID.Replace("?id=", "");
            return facebookUserID;
        }
    }
    catch (Exception ex)
    { 

    }
    return "";
}

要求

1. 我使用HtmlAgilityPack.dll加载html并解析它像XML。


2. 要测试调用下面的函数。
   findUserIdfromUsername（ https://facebook.com/USERNAME ）;


3. 我只测试3-4个网址并获得正确的用户标识。


4. 我没有使用任何API来查找USERID。


5. 我的英文和步骤不是很好。所以请管理。

1. I have used "HtmlAgilityPack.dll" to load the html and parse it like XML.
2. To test call the function like below. findUserIdfromUsername("https://facebook.com/USERNAME");
3. I have only test 3-4 urls and getting right userid.
4. I am not using any API to find USERID.
5. My English and steps are not too much good. So please manage it.

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