解析 youtube 数据 v3 api

Posted 2023-03-16

【中文标题】解析 youtube 数据 v3 api

【英文标题】：parse youtube data v3 api

【发布时间】：2018-07-17 12:21:49

【问题描述】：

我想解析 v3 的 youtube api 数据的响应

我得到的 JSON 响应是：

 "kind": "youtube#playlistItemListResponse",
 "etag": "\"XI7nbFXulYBIpL0ayR_gDh3eu1k/l1epVamXLkcsfpr63PWaASmovg4\"",
 "nextPageToken": "CAMQAA",
 "pageInfo": 
 "totalResults": 27,
 "resultsPerPage": 3
 ,
 "items": [

  "kind": "youtube#playlistItem",
  "etag": "\"XI7nbFXulYBIpL0ayR_gDh3eu1k/KyN5GfWqc2WFc37j5GcuhThVXig\"",
  "id": "UExTbVNFYzhaNmxpcTgyT3RlcHBSbS1rb3l0ZWdhUFgyQy41NkI0NEY2RDEwNTU3Q0M2",
  "snippet": 
    "publishedAt": "2017-10-03T17:59:36.000Z",
    "channelId": "UCuv25YFiKY3NUnuG7q7F3ng",
    "title": "أغرب الفرص الضائعة (الجولة 5) من الدوري السعودي",
    "description": "تابع مباريات #دوري_جميل مباشرة و حصريا على موقع وتطبيق #دوري_بلس : \n\nhttp://www.dawriplus.com\n\nتويتر : https://twitter.com/dawriplusksa?s=09\n\nانستجرام :http://instagram.com/dawriplusksa\n\nفيس بوك : https://m.facebook.com/DawriPlusKSA/",
    "thumbnails": 
      "default": 
        "url": "https://i.ytimg.com/vi/Tdt06VCCko0/default.jpg",
        "width": 120,
        "height": 90
      ,
      "medium": 
        "url": "https://i.ytimg.com/vi/Tdt06VCCko0/mqdefault.jpg",
        "width": 320,
        "height": 180
      ,
      "high": 
        "url": "https://i.ytimg.com/vi/Tdt06VCCko0/hqdefault.jpg",
        "width": 480,
        "height": 360
      ,
      "standard": 
        "url": "https://i.ytimg.com/vi/Tdt06VCCko0/sddefault.jpg",
        "width": 640,
        "height": 480
      ,
      "maxres": 
        "url": "https://i.ytimg.com/vi/Tdt06VCCko0/maxresdefault.jpg",
        "width": 1280,
        "height": 720
      
    ,
    "channelTitle": "دوري بلس",
    "playlistId": "PLSmSEc8Z6liq82OteppRm-koytegaPX2C",
    "position": 0,
    "resourceId": 
      "kind": "youtube#video",
      "videoId": "Tdt06VCCko0"
    
  ,
  "contentDetails": 
    "videoId": "Tdt06VCCko0",
    "videoPublishedAt": "2017-10-03T13:32:19.000Z"
  
,

  "kind": "youtube#playlistItem",
  "etag": "\"XI7nbFXulYBIpL0ayR_gDh3eu1k/QHbLatdcFE-i6Pxt5mku-QFX29c\"",
  "id": "UExTbVNFYzhaNmxpcTgyT3RlcHBSbS1rb3l0ZWdhUFgyQy4yODlGNEE0NkRGMEEzMEQy",
  "snippet": 
    "publishedAt": "2018-05-07T17:24:35.000Z",
    "channelId": "UCuv25YFiKY3NUnuG7q7F3ng",
    "title": "أغرب الفرص الضائعة (الجولة 26) من الدوري السعودي",
    "description": "أغرب الفرص الضائعة (الجولة 26) من الدوري السعودي\n\nتابع جميع مباريات الدوري السعودي للمحترفين فقط وحصرياً عبر تطبيق دوري بلس\nhttp://www.dawriplus.com\n\nتويتر : https://twitter.com/dawriplusksa\nانستجرام : http://instagram.com/dawriplusksa\nفيسبوك : https://m.facebook.com/DawriPlusKSA/",
    "thumbnails": 
      "default": 
        "url": "https://i.ytimg.com/vi/yegbCi2DcE4/default.jpg",
        "width": 120,
        "height": 90
      ,
      "medium": 
        "url": "https://i.ytimg.com/vi/yegbCi2DcE4/mqdefault.jpg",
        "width": 320,
        "height": 180
      ,
      "high": 
        "url": "https://i.ytimg.com/vi/yegbCi2DcE4/hqdefault.jpg",
        "width": 480,
        "height": 360
      ,
      "standard": 
        "url": "https://i.ytimg.com/vi/yegbCi2DcE4/sddefault.jpg",
        "width": 640,
        "height": 480
      ,
      "maxres": 
        "url": "https://i.ytimg.com/vi/yegbCi2DcE4/maxresdefault.jpg",
        "width": 1280,
        "height": 720
      
    ,
    "channelTitle": "دوري بلس",
    "playlistId": "PLSmSEc8Z6liq82OteppRm-koytegaPX2C",
    "position": 1,
    "resourceId": 
      "kind": "youtube#video",
      "videoId": "yegbCi2DcE4"
    
  ,
  "contentDetails": 
    "videoId": "yegbCi2DcE4",
    "videoPublishedAt": "2018-04-17T10:34:50.000Z"
  
,

  "kind": "youtube#playlistItem",
  "etag": "\"XI7nbFXulYBIpL0ayR_gDh3eu1k/3PqM5VVO1MDpiMSOpiLQw3JCoLU\"",
  "id": "UExTbVNFYzhaNmxpcTgyT3RlcHBSbS1rb3l0ZWdhUFgyQy4wMTcyMDhGQUE4NTIzM0Y5",
  "snippet": 
    "publishedAt": "2018-05-07T17:26:13.000Z",
    "channelId": "UCuv25YFiKY3NUnuG7q7F3ng",
    "title": "أغرب الفرص الضائعة (الجولة 25) من الدوري السعودي",
    "description": "أغرب الفرص الضائعة (الجولة 25) من الدوري السعودي\n\nتابع جميع مباريات الدوري السعودي للمحترفين فقط وحصرياً عبر تطبيق دوري بلس\nhttp://www.dawriplus.com\n\nتويتر : https://twitter.com/dawriplusksa\nانستجرام : http://instagram.com/dawriplusksa\nفيسبوك : https://m.facebook.com/DawriPlusKSA/",
    "thumbnails": 
      "default": 
        "url": "https://i.ytimg.com/vi/KUzswfTBDBI/default.jpg",
        "width": 120,
        "height": 90
      ,
      "medium": 
        "url": "https://i.ytimg.com/vi/KUzswfTBDBI/mqdefault.jpg",
        "width": 320,
        "height": 180
      ,
      "high": 
        "url": "https://i.ytimg.com/vi/KUzswfTBDBI/hqdefault.jpg",
        "width": 480,
        "height": 360
      ,
      "standard": 
        "url": "https://i.ytimg.com/vi/KUzswfTBDBI/sddefault.jpg",
        "width": 640,
        "height": 480
      ,
      "maxres": 
        "url": "https://i.ytimg.com/vi/KUzswfTBDBI/maxresdefault.jpg",
        "width": 1280,
        "height": 720
      
    ,
    "channelTitle": "دوري بلس",
    "playlistId": "PLSmSEc8Z6liq82OteppRm-koytegaPX2C",
    "position": 2,
    "resourceId": 
      "kind": "youtube#video",
      "videoId": "KUzswfTBDBI"
    
  ,
  "contentDetails": 
    "videoId": "KUzswfTBDBI",
    "videoPublishedAt": "2018-04-12T12:13:21.000Z"
  

]

我想访问所有数据..例如如何在 sn-p 中获取标题？以及默认的 url 缩略图 .. 等等 ..

 if let videos = receivedResponse["items"] as? [[String: Any]] 
    for video in videos
        print(video)
    
 

但我不知道如何获取数组中的字典..如何进一步解析并获取 json 中的每个元素？

【问题讨论】：

Correctly Parsing JSON in Swift 3的可能重复

【参考方案1】：

定义与您获得的数据相匹配的结构（https://app.quicktype.io 是一个很好的启动方法），然后使用JSONDecoder 解析数据：

struct YoutubeV3  ... 
let youtubeData = try JSONDecoder().decode(YoutubeV3.self, from: data)

【讨论】：

那么我如何打印值？

这取决于您如何命名结构的属性。如果您保留 JSON 中的名称，这可能很简单，例如print("\(youtubeData.items[0].id)")