如何在asp.net网站的Facebook页面上发布内容。
Google搜索说我必须创建一个应用程序才能执行此操作。是否可以在不创建应用的情况下发布到Facebook墙？
不确定从哪里开始。我试过developers.facebook.com和csharpsdk.org。没多少运气。有一个例子吗？或使用图表api的教程？
答案 0 :(得分：1)
在Facebook上创建APP是FB接受帖子的最低要求。你问的问题没有多大意义。想象一下，如果有人可以向FB发帖，我们可能不会在这里讨论这个问题（它现在已经死了，我很高兴它是这样的）我建议你阅读这些链接以便快速入手
希望这能给出一些起点。祝你好运
答案 1 :(得分：0)
在facebook中创建应用程序内容并获取您的唯一应用程序ID和密码后，请使用以下代码（代码隐藏）
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Globalization;
using System.IO;
using System.Net;
using System.Runtime.Serialization.Json;
using System.Web.Security;
using System.Xml;
using System.Collections.Specialized;
namespace WebApplication1
{
public partial class _Default : System.Web.UI.Page
{
readonly static string myurl = "your url";
readonly static string App_ID = "Your application id";
readonly static string App_Secret = "your secret code";
readonly static string scope = "email";
FacebookUser me;
readonly static DataContractJsonSerializer userSerializer = new DataContractJsonSerializer(typeof(FacebookUser));
protected void Page_Load(object sender, EventArgs e)
{
if (Session["code"] == null)
{
fbLogin.Visible = true;
}
else
{
fbLogin.Visible = false;
}
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
if ((!IsPostBack) || Session["code"] == null)
{
string code = Request.QueryString["code"];
if (code == null)
{
Session["code"] = null;
}
else
{
Session["code"] = code;
// oAuth = new oAuthFacebook();
//// oAuthFacebook oFB = new oAuthFacebook();
// //Response.Redirect(oFB.AuthorizationLinkGet());
// oAuth.AccessTokenGet(Request["code"]);
// if (oAuth.Token.Length > 0)
// {
// //We now have the credentials, so we can start making API calls
// string url = "https://graph.facebook.com/me/likes?access_token=" + oAuth.Token;
// string json = oAuth.WebRequest(oAuthFacebook.Method.GET, url, String.Empty);
// }
}
string error_description = Request.QueryString["error_description"];
string originalReturnUrl = Request.QueryString["ReturnUrl"]; // asp.net logon param
Uri backHereUri = Request.Url; // modify for dev server
if (!string.IsNullOrEmpty(code)) // user is authenticated
{
me = GetUserDetails(code, backHereUri);
FormsAuthentication.SetAuthCookie(me.email, false); // authorize!
if (!string.IsNullOrEmpty(originalReturnUrl))
Response.Redirect(originalReturnUrl);
}
if (!string.IsNullOrEmpty(error_description)) // user propably disallowed
{
OnError(error_description);
}
fbLogin.Visible = !User.Identity.IsAuthenticated;
if (string.IsNullOrEmpty(code))
{
fbLogin.Visible = true;
LoginName1.Visible = false;
}
else
{
fbLogin.Visible = false;
LoginName1.Visible = true;
LoginName1.Text = "User Email: " + me.email.ToString() + " Name: " + me.first_name.ToString() + " Sname: " + me.last_name.ToString() + " Verified: " + me.verified.ToString();
}
fbLogin.NavigateUrl = string.Format(
CultureInfo.InvariantCulture,
"https://www.facebook.com/dialog/oauth?"
+ "client_id={0}&scope={1}&redirect_uri={2}",
App_ID,
scope,
Uri.EscapeDataString(backHereUri.OriginalString));
}
}
FacebookUser GetUserDetails(string code, Uri backHereUri)
{
Uri getTokenUri = new Uri(
string.Format(
CultureInfo.InvariantCulture,
"https://graph.facebook.com/oauth/access_token?"
+ "client_id={0}&client_secret={1}&code={2}&redirect_uri={3}",
App_ID,
App_Secret,
Uri.EscapeDataString(code),
Uri.EscapeDataString(backHereUri.OriginalString))
);
using (var wc = new WebClient())
{
string token = wc.DownloadString(getTokenUri);
Session["token"] = token;
Uri getMeUri = new Uri(
string.Format(
CultureInfo.InvariantCulture,
"https://graph.facebook.com/me?{0}",
token)
);
using (var ms = new MemoryStream(wc.DownloadData(getMeUri)))
{
var me = (FacebookUser)userSerializer.ReadObject(ms);
return me;
}
}
}
void OnError(string error_description)
{
Controls.Add(new Label()
{
CssClass = "oauth-error",
Text = error_description
}
);
}
[Serializable]
class FacebookUser
{
public long id;
public string name;
public string first_name;
public string last_name;
public string link;
public string email;
public string timezone;
public string locale;
public bool verified;
public string updated_time;
}
protected void Button1_Click(object sender, EventArgs e)
{
XmlDocument doc = new XmlDocument();
WebRequest req = WebRequest.Create("https://api.facebook.com/restserver.php?method=links.getStats&urls=http://localhost:5064/default.aspx,http://www.facebook.com");
WebResponse resp = req.GetResponse();
StreamReader reader = new StreamReader(resp.GetResponseStream());
string xml = reader.ReadToEnd();
xml = xml.Replace("<?xml version=\"1.0\" encoding=\"UTF-8\"?>", "").Replace("links_getStats_response xmlns=\"http://api.facebook.com/1.0/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://api.facebook.com/1.0/ http://api.facebook.com/1.0/facebook.xsd\" list=\"true\"", "links_getStats_response");
doc.LoadXml(xml);
XmlNodeList xnList = doc.SelectNodes("links_getStats_response/link_stat");
foreach (XmlNode xn in xnList)
{
string fullurls = xn["url"].InnerText;
string likes = xn["like_count"].InnerText;
string comment = xn["comment_count"].InnerText;
string normalisedurls = xn["normalized_url"].InnerText;
}
}
public string WebRequests(string method, string url, string postData)
{
HttpWebRequest webRequest = null;
StreamWriter requestWriter = null;
string responseData = "";
webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
webRequest.Method = method.ToString();
webRequest.ServicePoint.Expect100Continue = false;
webRequest.UserAgent = HttpContext.Current.Request.UserAgent;
webRequest.Timeout = 20000;
if (method == "POST")
{
webRequest.ContentType = "application/x-www-form-urlencoded";
//POST the data.
requestWriter = new StreamWriter(webRequest.GetRequestStream());
try
{
requestWriter.Write(postData);
}
catch
{
throw;
}
finally
{
requestWriter.Close();
requestWriter = null;
}
}
responseData = WebResponseGet(webRequest);
webRequest = null;
return responseData;
}
public string WebResponseGet(HttpWebRequest webRequest)
{
StreamReader responseReader = null;
string responseData = "";
try
{
responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream());
responseData = responseReader.ReadToEnd();
}
catch
{
throw;
}
finally
{
webRequest.GetResponse().GetResponseStream().Close();
responseReader.Close();
responseReader = null;
}
return responseData;
}
protected void Button2_Click(object sender, EventArgs e)
{
if (Session["code"] != null)
{
string urls = "https://graph.facebook.com/me/feed?" + Session["token"];
var json = WebRequests("POST", urls, "message=" + HttpUtility.UrlEncode("" + TextBox1.Text));
}
}
}
}
AND for default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:HyperLink runat="server" Text="Log in with Facebook" id="fbLogin"/><br /><br />
<asp:Label ID="LoginName1" runat="server" Text="" Font-Bold="true"></asp:Label>
<br />
<br />
<asp:Button ID="Button1" runat="server" Text="Get Likes And Comments" onclick="Button1_Click" />
<br />
<asp:TextBox ID="TextBox1" runat="server" Width="407px" Text="Testing Api by c# code"></asp:TextBox>
<asp:Button ID="Button2" runat="server" Text="Post To me"
onclick="Button2_Click" />
</div>
</form>
</body>
</html>
希望有所帮助