今天看了一篇非常好的文章，就放在这里与大家分享一下，顺便也给自己留一份。这段时间一直在学习MVC，另外如果大家有什么好的建议或者学习的地方，也请告知一下，谢谢。
这篇主要介绍如何应用facebook .net SDK,实现发帖、点赞、上传照片视频等功能，更多关于facebook API，请参考：https://developers.facebook.com
1、注册facebook账号，并且注册facebook app，参考地址：https://developers.facebook.com/apps，注册了app之后，会得到一些此app的信息，
这些信息都是要用到的。
2、注册好了App之后，开始新建解决方案(本例为asp.net mvc4 web app)
3、引入facebook .net sdk，下载地址：https://github.com/facebook-csharp-sdk/facebook-csharp-sdk，关于更多SDK文档地址：https://developers.facebook.com/docs/
除了直接下载之外，还能通过NuGet添加
4、安装完Facebook SDK,对web.config文件做点设置如下
5、一切准备就绪，现在开始使用SDK，首先登入授权，授权过程中有个scope参数，这里面是表示要授权的一些项
FacebookClient fbClient = new FacebookClient();
string appID = ConfigurationManager.AppSettings["AppID"];
string appSecret = ConfigurationManager.AppSettings["AppSecret"];
string redirectUri = ConfigurationManager.AppSettings["RedirectUri"];
public ActionResult Login()
{
string loginUrl = "";
dynamic loginResult = fbClient.GetLoginUrl(new
{
client_id = appID,
redirect_uri = redirectUri,
display = "page",
scope = "email,publish_stream,read_stream"
//scope = "email,publish_stream,read_stream,share_item,video_upload,photo_upload,create_note,user_friends,publish_actions,export_stream,status_update"
});
loginUrl = loginResult.ToString();
if (!string.IsNullOrEmpty(loginUrl))
return Redirect(loginUrl);
else
return Content("登录失败!");
}
6、登入成功之后会跳转到上文提到的redirect_uri地址，而且会传回一个code值，我们用传回来的code去换取access token(这个灰常重要)
public ActionResult FBMain()
{
string code = Request.Params["code"];
string accessToken = "";
if (!string.IsNullOrEmpty(code))
{
///Get access token
dynamic tokenResult = fbClient.Get("/oauth/access_token", new
{
client_id = appID,
client_secret = appSecret,
redirect_uri = redirectUri,
code = code
});
accessToken = tokenResult.access_token.ToString();
ViewBag.Message = "Get token successful!The token value:" + accessToken;
}
else
{
ViewBag.Message = "faield to get token!";
}
return View();
}
7、拿到access token之后，就可以用它做很多事情了，例如发状态上传照片
a.发状态
/// <summary>
///Post a news feed
/// </summary>
/// <author>Johnny</author>
/// <param name="status">the text message</param>
/// <date>2013/10/25, 17:09:49</date>
/// <returns>a posted ID</returns>
public string Post(string status)
{
string id = null; try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
dynamic postResult = fbClient.Post("/me/feed", new
{
message = status
});
id = postResult.id.ToString();
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
} return id;
}
b.发链接
/// <summary>
///share a feed
/// </summary>
/// <author>Johnny</author>
/// <date>2013/10/29, 09:46:08</date>
/// <param name="status">the text message</param>
/// <param name="link">an valid link(eg: http://www.mojikan.com)</param>
/// valid tools:https://developers.facebook.com/tools/debug
/// <returns>return a post id</returns>
public string Share(string status, string link)
{
string shareID = null;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
dynamic shareResult = fbClient.Post("me/feed", new
{
message = status,
link = link
});
shareID = shareResult.id;
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return shareID;
}
c.传照片
/// <summary>
///upload picture
/// </summary>
/// <author>Johnny</author>
/// <param name="status">the text message</param>
/// <param name="path">the picture's path</param>
/// <date>2013/10/31, 15:24:51</date>
/// <returns>picture id & post id</returns>
public string PostPicture(String status, String path)
{
string result = null;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
using (var stream = File.OpenRead(path))
{
dynamic pictureResult = fbClient.Post("me/photos",
new
{
message = status,
source = new FacebookMediaStream
{
ContentType = "image/jpg",
FileName = Path.GetFileName(path)
}.SetValue(stream)
});
if (pictureResult != null)
result = pictureResult.ToString();
}
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return result;
}
d.传视频
/// <summary>
///upload video
/// </summary>
/// <author>Johnny</author>
/// <param name="status">the text message</param>
/// <param name="path">the video's path</param>
/// <date>2013/10/31, 15:26:40</date>
/// <returns>an video id</returns>
//The aspect ratio of the video must be between 9x16 and 16x9, and the video cannot exceed 1024MB or 180 minutes in length.
public string PostVideo(String status, String path)
{
string result = null;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
Stream stream = File.OpenRead(path);
FacebookMediaStream medStream = new FacebookMediaStream
{
ContentType = "video/mp4",
FileName = Path.GetFileName(path)
}.SetValue(stream); dynamic videoResult = fbClient.Post("me/videos",
new
{
description = status,
source = medStream
});
if (videoResult != null)
result = videoResult.ToString();
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return result;
}
e.点赞
/// <summary>
///likes a news feed
/// </summary>
/// <author>Johnny</author>
/// <param name="postID">a post id</param>
/// <returns>return a bool value</returns>
/// <date>2013/10/25, 18:35:51</date>
public bool Like(string postID)
{
bool result = false;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
dynamic likeResult = fbClient.Post("/" + postID + "/likes", new
{
//post_id = postID,
});
result = Convert.ToBoolean(likeResult);
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return result;
}
f.发送App邀请
/// <summary>
///send a app request to the user.
/// </summary>
/// <author>Johnny</author>
/// <param name="status">the request message</param>
/// <returns>return app object ids & user ids</returns>
/// <date>2013/10/28, 09:33:35</date>
public string AppRequest(string userID, string status)
{
string result = null;
try
{
string appToken = this.GetAppAccessToken();
if (!string.IsNullOrEmpty(appToken))
{
FacebookClient fbClient = new FacebookClient(appToken);
dynamic requestResult = fbClient.Post(userID + "/apprequests", new
{
message = status
});
result = requestResult.ToString();
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return result;
} /// <summary>
///Get an app access token
/// </summary>
/// <author>Johnny</author>
/// <date>2013/11/05, 11:52:37</date>
private string GetAppAccessToken()
{
string appToken = null;
try
{
FacebookClient client = new FacebookClient();
dynamic token = client.Get("/oauth/access_token", new
{
client_id = appID,
client_secret = appSecret,
grant_type = "client_credentials"
}); appToken = token.access_token.ToString();
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return appToken;
}
g.获取状态列表
/// <summary>
///get current user's post list
/// </summary>
/// <author>Johnny</author>
/// <returns>return post list</returns>
/// <date>2013/10/30, 13:42:37</date>
public List<Post> GetPostList()
{
List<Post> postList = null;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
dynamic postResult = (IDictionary<string, object>)fbClient.Get("/me/feed");
postList = new List<Post>();
postList = GeneralPostList(postResult);
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return postList;
} /// <summary>
///get one user's post list
/// </summary>
/// <param name="userID">user id</param>
/// <returns>return post list</returns>
/// <author>Johnny</author>
/// <date>2013/11/06, 17:06:19</date>
public List<Post> GetPostList(string userID)
{
List<Post> postList = null;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
postList = new List<Post>();
dynamic postResult = (IDictionary<string, object>)fbClient.Get("/" + userID + "/feed");
postList = GeneralPostList(postResult);
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return postList;
} private List<Post> GeneralPostList(dynamic postResult)
{
List<Post> postList = null;
try
{
postList = new List<Post>();
foreach (var item in postResult.data)
{
Dictionary<string, object>.KeyCollection keys = item.Keys;
Post post = new Post(); List<Action> actionList = new List<Action>();
dynamic actions = item.actions;
if (actions != null)
{
foreach (var ac in actions)
{
Action action = new Action();
action.link = ac.link.ToString();
action.name = ac.name.ToString(); actionList.Add(action);
}
post.Actions = actionList;
} if (keys.Contains<string>("caption"))
post.Caption = item.caption.ToString();
if (keys.Contains<string>("created_time"))
post.CreatedTime = item.created_time.ToString();
if (keys.Contains<string>("description"))
post.Description = item.description.ToString(); if (keys.Contains<string>("from"))
{
FromUser fUser = new FromUser();
fUser.ID = item.from.id.ToString();
fUser.Name = item.from.name.ToString();
post.From = fUser;
} if (keys.Contains<string>("icon"))
post.Icon = item.icon.ToString(); post.ID = item.id.ToString(); if (keys.Contains<string>("include_hidden"))
post.IncludeHidden = item.include_hidden.ToString(); if (keys.Contains<string>("link"))
post.Link = item.link.ToString(); if (keys.Contains<string>("message"))
post.Message = item.message.ToString(); if (keys.Contains<string>("picture"))
post.Picture = item.picture.ToString(); if (keys.Contains<string>("name"))
post.Name = item.name.ToString(); if (keys.Contains<string>("object_id"))
post.ObjectID = item.object_id.ToString(); if (keys.Contains<string>("privacy"))
post.Privacy = item.privacy.ToString(); if (keys.Contains<string>("shares"))
post.Shares = item.shares.ToString(); if (keys.Contains<string>("source"))
post.Source = item.source.ToString(); if (keys.Contains<string>("status_type"))
post.StatusType = item.status_type.ToString(); if (keys.Contains<string>("story"))
post.Story = item.story.ToString(); if (keys.Contains<string>("type"))
post.Type = item.type.ToString(); if (keys.Contains<string>("updated_time"))
post.UpdatedTime = item.updated_time.ToString(); postList.Add(post);
}
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return postList;
}
h.获取个人用户信息和朋友信息
/// <summary>
///Get the current user info
/// </summary>
/// <author>Johnny</author>
/// <returns>return an UserInfo</returns>
/// <date>2013/10/29, 13:36:07</date>
public UserInfo GetUserInfo()
{
UserInfo userInfo = null;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
dynamic user = fbClient.Get("/me");
Dictionary<string, object>.KeyCollection keys = user.Keys;
userInfo = new UserInfo();
userInfo.ID = user.id.ToString();
if (keys.Contains<string>("name"))
userInfo.Name = user.name.ToString();
if (keys.Contains<string>("first_name"))
userInfo.FirstName = user.first_name.ToString();
if (keys.Contains<string>("last_name"))
userInfo.LastName = user.last_name.ToString();
if (keys.Contains<string>("username"))
userInfo.UserName = user.username.ToString();
if (keys.Contains<string>("link"))
userInfo.Link = user.link.ToString();
if (keys.Contains<string>("timezone"))
userInfo.TimeZone = user.timezone.ToString();
if (keys.Contains<string>("updated_time"))
userInfo.UpdatedTime = Convert.ToDateTime(user.updated_time);
if (keys.Contains<string>("verified"))
userInfo.Verified = user.verified.ToString();
if (keys.Contains<string>("gender"))
userInfo.Gender = user.gender.ToString();
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return userInfo;
} /// <summary>
///get friends info
/// </summary>
/// <author>Johnny</author>
/// <returns>return list of UserInfo</returns>
/// <date>2013/10/31, 15:57:40</date>
public List<UserInfo> GetFriendInfoList()
{
List<UserInfo> userList = null;
try
{
if (!string.IsNullOrEmpty(accessToken))
{
FacebookClient fbClient = new FacebookClient(accessToken);
dynamic friends = fbClient.Get("/me/friends");
if (friends != null)
{
userList = new List<UserInfo>();
foreach (dynamic item in friends.data)
{
UserInfo user = new UserInfo();
user.ID = item.id.ToString();
user.Name = item.name.ToString(); userList.Add(user);
}
}
}
else
errorMessage = ErrorTokenMessage;
}
catch (FacebookApiException fbex)
{
errorMessage = fbex.Message;
}
return userList;
}
希望这些也能让需要的人看到，对大家有所帮助。