尝试使用 YouTube API 从 JSON 中提取视频 ID

Question

我正在尝试从json中提取"videoid"(这是一个字符串( 从youtube API获得，并希望将该"videoid"提供给另一个调用player.loadVideo("Videoid"(的.java文件，我已经尝试过 提取它，但其返回空

值

{
 "kind": "youtube#searchListResponse",
 "etag": ""XpPGQXPnxQJhLgs6enD_n8JR4Qk/twPDbB5irYgF-0BnQZIeukjX7k0"",
 "regionCode": "CA",
 "pageInfo": {
  "totalResults": 1,
  "resultsPerPage": 5
 },
 "items": [
  {
   "kind": "youtube#searchResult",
   "etag": ""XpPGQXPnxQJhLgs6enD_n8JR4Qk/SmOmHZrRW-QMb9RisiuAxWDkXao"",
   "id": {
    "kind": "youtube#video",
   <b> "videoId": "8ykDBg-b4QE"<b>
   },
   "snippet": {
    "publishedAt": "2019-03-30T11:43:48.000Z",
    "channelId": "UCk4o4gWFuU2YTS50ym4RbXg",
    "title": "Streaming...",
    "description": "Become a sponsor: xPfsD Multistreaming with ream.io/ 
      veraise.com/channel/622995 Donate: ...",
    "thumbnails": {
     "default": {
      "url": "vi/8ykDBg-b4QE/default_live.jpg",
      "width": 120,
      "height": 90
     },
     "medium": {
      "url": ".ytimg.com/vi/8ykDBg-b4QE/mqdefault_live.jpg",
      "width": 320,
      "height": 180
     },
     "high": {
      "url": ".ytimg.com/vi/8ykDBg-b4QE/hqdefault_live.jpg",
      "width": 480,
      "height": 360
     }
    },
    "channelTitle": "Heavenly Controller",
    "liveBroadcastContent": "live"
   }
  }
 ]
}

            JSONArray JA = new JSONArray(data);
            for(int i =0 ;i <JA.length(); i++){
            JSONObject JO = (JSONObject) JA.get(i);
            //singleParsed =  //"Name:" + JO.get("name") + "n"+
            // JO.get("videoId") + "n"
            //"Contact:" + JO.get("contact") + "n"+
            // "Country:" + JO.get("country") + "n"
                               // ;
            // dataParsed = dataParsed + singleParsed +"n" ;
            System.out.println(JO);

基本上期望值数据="8ykDBg-b4QE"，然后可以使用 内部播放器.java由函数 player.loadVideo("data"(

Answer 1

假设我们有一个用于此响应的 jsonObject。现在，根据您的 json 响应，以下代码将获取 videoId：

    JSONArray jArr = jsonObject.getJSONArray("items");
    for(int i =0; i < jArr.length(); i++)
    {
        // getting object from items array 
        JSONObject itemObj = jArr.getJSONObject(i);
        // getting id object from item object 
        JSONObject idObj = itemObj.getJSONObject("id");
        // getting videoId from idObject 
        String videoId = idObj.getString("videoId"); 
    }