[Objective-C] 自幹上傳 mutipart/form 到youtube

要測試一下上傳影片到youtube，
由於先前有在java自幹過一次 mutipart/form(四年前了@@) ，
這次改用objective c，順道記錄一下。

Youtube Upload API

https://developers.google.com/youtube/v3/docs/videos/insert

函式庫

沒用什麼第三方的庫，NSURLSession自幹

NSURLSessionConfiguration : 做授權

NSMutableURLRequest : 做連線

NSURLSessionUploadTask : 上傳的任務

基本上參考這篇就會寫了
NSURLSessionUploadTask(上传任务)

流程參考

這裡要注意request body跟上傳的endpoint 是比較不一樣的，多了upload XD

http://stackoverflow.com/questions/13274173/upload-video-on-youtube-using-curl-and-api-v3

13down vote

Updated version: Now with custom upload url and sending of metadata with the upload process. The entire process requires 2 requests: Get a custom upload location First, make a POST request for an upload url to: "https://www.googleapis.com/upload/youtube/v3/videos" You will need to send 2 headers: "Authorization": "Bearer {YOUR_ACCESS_TOKEN}" "Content-type": "application/json" You need to send 3 parameters: （沒試過uploadType） "uploadType": "resumable" "part": "snippet, status" "key": {YOUR_API_KEY} And you will need to send the metadata for the video in the request body: { "snippet": { "title": {VIDEO TITLE}, "description": {VIDEO DESCRIPTION}, "tags": [{TAGS LIST}], "categoryId": {YOUTUBE CATEGORY ID} }, "status": { "privacyStatus": {"public", "unlisted" OR "private"} } }

設定影片的snippet.title踩雷

最後做一個如下圖的模擬才正確設定影片的title
一樣模擬一樣text field的欄任，然後資料就送json string。試了很多種終於成功~XD

回傳結果

重覆的影片內容還會被偵測到XD

{

 "kind": "youtube#video",

 "etag": "\"uQc-MPTsstrHkQcRXL3IWLmeNsM/UXTZ1WX2E5Fa0kYSvpyTeyKT9LQ\"",

 "id": "你的影片id",

 "snippet": {

  "publishedAt": "2017-02-16T08:54:52.000Z",

  "channelId": "UC3b43KuPKlmMa0-s7mlPh9g",

  "title": "youtube upload video @ 2017-02-16T16:54:51+08:00",

  "description": "youtube upload video @ 2017-02-16T16:54:51+08:00",

  "thumbnails": {

   "default": {

    "url": "https://i.ytimg.com/vi/bddGhj46KqY/default.jpg",

    "width": 120,

    "height": 90

   },

   "medium": {

    "url": "https://i.ytimg.com/vi/bddGhj46KqY/mqdefault.jpg",

    "width": 320,

    "height": 180

   },

   "high": {

    "url": "https://i.ytimg.com/vi/bddGhj46KqY/hqdefault.jpg",

    "width": 480,

    "height": 360

   }

  },

  "channelTitle": "蔡大痣",

  "categoryId": "22",

  "liveBroadcastContent": "none",

  "localized": {

   "title": "youtube upload video @ 2017-02-16T16:54:51+08:00",

   "description": "youtube upload video @ 2017-02-16T16:54:51+08:00"

  }

 },

 "status": {

  "uploadStatus": "uploaded",

  "privacyStatus": "public",

  "license": "youtube",

  "embeddable": true,

  "publicStatsViewable": true

 }

}

參考

http://www.jianshu.com/p/c50e9fcd6600
http://hayageek.com/ios-nsurlsession-example/
http://blog.csdn.net/hello_hwc/article/details/44833683
http://pimacun.github.io/foundation/life-cycle-of-a-url-session
http://ecowork-blog.logdown.com/posts/160123-ios-7-nsurlsession