浅谈 facebook .net sdk 应用
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
1 FacebookClient fbClient = new FacebookClient(); 2 string appID = ConfigurationManager.AppSettings["AppID"]; 3 string appSecret = ConfigurationManager.AppSettings["AppSecret"]; 4 string redirectUri = ConfigurationManager.AppSettings["RedirectUri"];
1 public ActionResult Login() 2 { 3 string loginUrl = ""; 4 dynamic loginResult = fbClient.GetLoginUrl(new 5 { 6 client_id = appID, 7 redirect_uri = redirectUri, 8 display = "page", 9 scope = "email,publish_stream,read_stream" 10 //scope = "email,publish_stream,read_stream,share_item,video_upload,photo_upload,create_note,user_friends,publish_actions,export_stream,status_update" 11 }); 12 loginUrl = loginResult.ToString(); 13 if (!string.IsNullOrEmpty(loginUrl)) 14 return Redirect(loginUrl); 15 else 16 return Content("登录失败!"); 17 }
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)
1 public ActionResult FBMain() 2 { 3 string code = Request.Params["code"]; 4 string accessToken = ""; 5 if (!string.IsNullOrEmpty(code)) 6 { 7 ///Get access token 8 dynamic tokenResult = fbClient.Get("/oauth/access_token", new 9 { 10 client_id = appID, 11 client_secret = appSecret, 12 redirect_uri = redirectUri, 13 code = code 14 }); 15 accessToken = tokenResult.access_token.ToString(); 16 ViewBag.Message = "Get token successful!The token value:" + accessToken; 17 } 18 else 19 { 20 ViewBag.Message = "faield to get token!"; 21 } 22 return View(); 23 }
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
1 /// <summary> 2 ///Post a news feed 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <param name="status">the text message</param> 6 /// <date>2013/10/25, 17:09:49</date> 7 /// <returns>a posted ID</returns> 8 public string Post(string status) 9 { 10 string id = null; 11 12 try 13 { 14 if (!string.IsNullOrEmpty(accessToken)) 15 { 16 FacebookClient fbClient = new FacebookClient(accessToken); 17 dynamic postResult = fbClient.Post("/me/feed", new 18 { 19 message = status 20 }); 21 id = postResult.id.ToString(); 22 } 23 else 24 errorMessage = ErrorTokenMessage; 25 } 26 catch (FacebookApiException fbex) 27 { 28 errorMessage = fbex.Message; 29 } 30 31 return id; 32 }
b.发链接
1 /// <summary> 2 ///share a feed 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <date>2013/10/29, 09:46:08</date> 6 /// <param name="status">the text message</param> 7 /// <param name="link">an valid link(eg: http://www.mojikan.com)</param> 8 /// valid tools:https://developers.facebook.com/tools/debug 9 /// <returns>return a post id</returns> 10 public string Share(string status, string link) 11 { 12 string shareID = null; 13 try 14 { 15 if (!string.IsNullOrEmpty(accessToken)) 16 { 17 FacebookClient fbClient = new FacebookClient(accessToken); 18 dynamic shareResult = fbClient.Post("me/feed", new 19 { 20 message = status, 21 link = link 22 }); 23 shareID = shareResult.id; 24 } 25 else 26 errorMessage = ErrorTokenMessage; 27 } 28 catch (FacebookApiException fbex) 29 { 30 errorMessage = fbex.Message; 31 } 32 return shareID; 33 }
c.传照片
1 /// <summary> 2 ///upload picture 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <param name="status">the text message</param> 6 /// <param name="path">the picture's path</param> 7 /// <date>2013/10/31, 15:24:51</date> 8 /// <returns>picture id & post id</returns> 9 public string PostPicture(String status, String path) 10 { 11 string result = null; 12 try 13 { 14 if (!string.IsNullOrEmpty(accessToken)) 15 { 16 FacebookClient fbClient = new FacebookClient(accessToken); 17 using (var stream = File.OpenRead(path)) 18 { 19 dynamic pictureResult = fbClient.Post("me/photos", 20 new 21 { 22 message = status, 23 source = new FacebookMediaStream 24 { 25 ContentType = "image/jpg", 26 FileName = Path.GetFileName(path) 27 }.SetValue(stream) 28 }); 29 if (pictureResult != null) 30 result = pictureResult.ToString(); 31 } 32 } 33 else 34 errorMessage = ErrorTokenMessage; 35 } 36 catch (FacebookApiException fbex) 37 { 38 errorMessage = fbex.Message; 39 } 40 return result; 41 }
d.传视频
1 /// <summary> 2 ///upload video 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <param name="status">the text message</param> 6 /// <param name="path">the video's path</param> 7 /// <date>2013/10/31, 15:26:40</date> 8 /// <returns>an video id</returns> 9 //The aspect ratio of the video must be between 9x16 and 16x9, and the video cannot exceed 1024MB or 180 minutes in length. 10 public string PostVideo(String status, String path) 11 { 12 string result = null; 13 try 14 { 15 if (!string.IsNullOrEmpty(accessToken)) 16 { 17 FacebookClient fbClient = new FacebookClient(accessToken); 18 Stream stream = File.OpenRead(path); 19 FacebookMediaStream medStream = new FacebookMediaStream 20 { 21 ContentType = "video/mp4", 22 FileName = Path.GetFileName(path) 23 }.SetValue(stream); 24 25 dynamic videoResult = fbClient.Post("me/videos", 26 new 27 { 28 description = status, 29 source = medStream 30 }); 31 if (videoResult != null) 32 result = videoResult.ToString(); 33 } 34 else 35 errorMessage = ErrorTokenMessage; 36 } 37 catch (FacebookApiException fbex) 38 { 39 errorMessage = fbex.Message; 40 } 41 return result; 42 }
e.点赞
1 /// <summary> 2 ///likes a news feed 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <param name="postID">a post id</param> 6 /// <returns>return a bool value</returns> 7 /// <date>2013/10/25, 18:35:51</date> 8 public bool Like(string postID) 9 { 10 bool result = false; 11 try 12 { 13 if (!string.IsNullOrEmpty(accessToken)) 14 { 15 FacebookClient fbClient = new FacebookClient(accessToken); 16 dynamic likeResult = fbClient.Post("/" + postID + "/likes", new 17 { 18 //post_id = postID, 19 }); 20 result = Convert.ToBoolean(likeResult); 21 } 22 else 23 errorMessage = ErrorTokenMessage; 24 } 25 catch (FacebookApiException fbex) 26 { 27 errorMessage = fbex.Message; 28 } 29 return result; 30 }
f.发送App邀请
1 /// <summary> 2 ///send a app request to the user. 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <param name="status">the request message</param> 6 /// <returns>return app object ids & user ids</returns> 7 /// <date>2013/10/28, 09:33:35</date> 8 public string AppRequest(string userID, string status) 9 { 10 string result = null; 11 try 12 { 13 string appToken = this.GetAppAccessToken(); 14 if (!string.IsNullOrEmpty(appToken)) 15 { 16 FacebookClient fbClient = new FacebookClient(appToken); 17 dynamic requestResult = fbClient.Post(userID + "/apprequests", new 18 { 19 message = status 20 }); 21 result = requestResult.ToString(); 22 } 23 else 24 errorMessage = ErrorTokenMessage; 25 } 26 catch (FacebookApiException fbex) 27 { 28 errorMessage = fbex.Message; 29 } 30 return result; 31 } 32 33 /// <summary> 34 ///Get an app access token 35 /// </summary> 36 /// <author>Johnny</author> 37 /// <date>2013/11/05, 11:52:37</date> 38 private string GetAppAccessToken() 39 { 40 string appToken = null; 41 try 42 { 43 FacebookClient client = new FacebookClient(); 44 dynamic token = client.Get("/oauth/access_token", new 45 { 46 client_id = appID, 47 client_secret = appSecret, 48 grant_type = "client_credentials" 49 }); 50 51 appToken = token.access_token.ToString(); 52 } 53 catch (FacebookApiException fbex) 54 { 55 errorMessage = fbex.Message; 56 } 57 return appToken; 58 }
g.获取状态列表
1 /// <summary> 2 ///get current user's post list 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <returns>return post list</returns> 6 /// <date>2013/10/30, 13:42:37</date> 7 public List<Post> GetPostList() 8 { 9 List<Post> postList = null; 10 try 11 { 12 if (!string.IsNullOrEmpty(accessToken)) 13 { 14 FacebookClient fbClient = new FacebookClient(accessToken); 15 dynamic postResult = (IDictionary<string, object>)fbClient.Get("/me/feed"); 16 postList = new List<Post>(); 17 postList = GeneralPostList(postResult); 18 } 19 else 20 errorMessage = ErrorTokenMessage; 21 } 22 catch (FacebookApiException fbex) 23 { 24 errorMessage = fbex.Message; 25 } 26 return postList; 27 } 28 29 30 /// <summary> 31 ///get one user's post list 32 /// </summary> 33 /// <param name="userID">user id</param> 34 /// <returns>return post list</returns> 35 /// <author>Johnny</author> 36 /// <date>2013/11/06, 17:06:19</date> 37 public List<Post> GetPostList(string userID) 38 { 39 List<Post> postList = null; 40 try 41 { 42 if (!string.IsNullOrEmpty(accessToken)) 43 { 44 FacebookClient fbClient = new FacebookClient(accessToken); 45 postList = new List<Post>(); 46 dynamic postResult = (IDictionary<string, object>)fbClient.Get("/" + userID + "/feed"); 47 postList = GeneralPostList(postResult); 48 } 49 else 50 errorMessage = ErrorTokenMessage; 51 } 52 catch (FacebookApiException fbex) 53 { 54 errorMessage = fbex.Message; 55 } 56 return postList; 57 } 58 59 private List<Post> GeneralPostList(dynamic postResult) 60 { 61 List<Post> postList = null; 62 try 63 { 64 postList = new List<Post>(); 65 foreach (var item in postResult.data) 66 { 67 Dictionary<string, object>.KeyCollection keys = item.Keys; 68 Post post = new Post(); 69 70 List<Action> actionList = new List<Action>(); 71 dynamic actions = item.actions; 72 if (actions != null) 73 { 74 foreach (var ac in actions) 75 { 76 Action action = new Action(); 77 action.link = ac.link.ToString(); 78 action.name = ac.name.ToString(); 79 80 actionList.Add(action); 81 } 82 post.Actions = actionList; 83 } 84 85 if (keys.Contains<string>("caption")) 86 post.Caption = item.caption.ToString(); 87 if (keys.Contains<string>("created_time")) 88 post.CreatedTime = item.created_time.ToString(); 89 if (keys.Contains<string>("description")) 90 post.Description = item.description.ToString(); 91 92 if (keys.Contains<string>("from")) 93 { 94 FromUser fUser = new FromUser(); 95 fUser.ID = item.from.id.ToString(); 96 fUser.Name = item.from.name.ToString(); 97 post.From = fUser; 98 } 99 100 if (keys.Contains<string>("icon")) 101 post.Icon = item.icon.ToString(); 102 103 post.ID = item.id.ToString(); 104 105 if (keys.Contains<string>("include_hidden")) 106 post.IncludeHidden = item.include_hidden.ToString(); 107 108 if (keys.Contains<string>("link")) 109 post.Link = item.link.ToString(); 110 111 if (keys.Contains<string>("message")) 112 post.Message = item.message.ToString(); 113 114 if (keys.Contains<string>("picture")) 115 post.Picture = item.picture.ToString(); 116 117 if (keys.Contains<string>("name")) 118 post.Name = item.name.ToString(); 119 120 if (keys.Contains<string>("object_id")) 121 post.ObjectID = item.object_id.ToString(); 122 123 if (keys.Contains<string>("privacy")) 124 post.Privacy = item.privacy.ToString(); 125 126 if (keys.Contains<string>("shares")) 127 post.Shares = item.shares.ToString(); 128 129 if (keys.Contains<string>("source")) 130 post.Source = item.source.ToString(); 131 132 if (keys.Contains<string>("status_type")) 133 post.StatusType = item.status_type.ToString(); 134 135 if (keys.Contains<string>("story")) 136 post.Story = item.story.ToString(); 137 138 if (keys.Contains<string>("type")) 139 post.Type = item.type.ToString(); 140 141 if (keys.Contains<string>("updated_time")) 142 post.UpdatedTime = item.updated_time.ToString(); 143 144 postList.Add(post); 145 } 146 } 147 catch (FacebookApiException fbex) 148 { 149 errorMessage = fbex.Message; 150 } 151 return postList; 152 }
h.获取个人用户信息和朋友信息
1 /// <summary> 2 ///Get the current user info 3 /// </summary> 4 /// <author>Johnny</author> 5 /// <returns>return an UserInfo</returns> 6 /// <date>2013/10/29, 13:36:07</date> 7 public UserInfo GetUserInfo() 8 { 9 UserInfo userInfo = null; 10 try 11 { 12 if (!string.IsNullOrEmpty(accessToken)) 13 { 14 FacebookClient fbClient = new FacebookClient(accessToken); 15 dynamic user = fbClient.Get("/me"); 16 Dictionary<string, object>.KeyCollection keys = user.Keys; 17 userInfo = new UserInfo(); 18 userInfo.ID = user.id.ToString(); 19 if (keys.Contains<string>("name")) 20 userInfo.Name = user.name.ToString(); 21 if (keys.Contains<string>("first_name")) 22 userInfo.FirstName = user.first_name.ToString(); 23 if (keys.Contains<string>("last_name")) 24 userInfo.LastName = user.last_name.ToString(); 25 if (keys.Contains<string>("username")) 26 userInfo.UserName = user.username.ToString(); 27 if (keys.Contains<string>("link")) 28 userInfo.Link = user.link.ToString(); 29 if (keys.Contains<string>("timezone")) 30 userInfo.TimeZone = user.timezone.ToString(); 31 if (keys.Contains<string>("updated_time")) 32 userInfo.UpdatedTime = Convert.ToDateTime(user.updated_time); 33 if (keys.Contains<string>("verified")) 34 userInfo.Verified = user.verified.ToString(); 35 if (keys.Contains<string>("gender")) 36 userInfo.Gender = user.gender.ToString(); 37 } 38 else 39 errorMessage = ErrorTokenMessage; 40 } 41 catch (FacebookApiException fbex) 42 { 43 errorMessage = fbex.Message; 44 } 45 return userInfo; 46 } 47 48 /// <summary> 49 ///get friends info 50 /// </summary> 51 /// <author>Johnny</author> 52 /// <returns>return list of UserInfo</returns> 53 /// <date>2013/10/31, 15:57:40</date> 54 public List<UserInfo> GetFriendInfoList() 55 { 56 List<UserInfo> userList = null; 57 try 58 { 59 if (!string.IsNullOrEmpty(accessToken)) 60 { 61 FacebookClient fbClient = new FacebookClient(accessToken); 62 dynamic friends = fbClient.Get("/me/friends"); 63 if (friends != null) 64 { 65 userList = new List<UserInfo>(); 66 foreach (dynamic item in friends.data) 67 { 68 UserInfo user = new UserInfo(); 69 user.ID = item.id.ToString(); 70 user.Name = item.name.ToString(); 71 72 userList.Add(user); 73 } 74 } 75 } 76 else 77 errorMessage = ErrorTokenMessage; 78 } 79 catch (FacebookApiException fbex) 80 { 81 errorMessage = fbex.Message; 82 } 83 return userList; 84 }
希望这些也能让需要的人看到，对大家有所帮助。
