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我可以以某种方式限制 json 对象返回的节点数量吗？我只使用每个搜索结果中的标题、作者和视频 ID，所以我不需要加载和解析一百万个其他节点。无论如何，除了运行它认为服务器端代理之外，还要这样做吗？

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2 回答 2

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不知道为什么每个人都说不，因为虽然您不能将其限制为 JUST title、channelId 和 videoId，但您可以选择省略一些字段。您可以在 Data Api 的 v3 中使用“字段”参数。 在此处查看文档。

未设置字段的响应：

{
 "kind": "youtube#searchListResponse",
 "etag": "\"a6IVtoIjS7Yw-1cFQOGQ6_bjjs4/_DFSOhdxHuGG_p_f1fVZOosZghs\"",
 "pageInfo": {
  "totalResults": 1000000,
  "resultsPerPage": 2
 },
 "nextPageToken": "CAIQAA",
 "items": [
  {
   "id": {
    "kind": "youtube#video",
    "videoId": "dw1HavgoK9E"
   },
   "kind": "youtube#searchResult",
   "etag": "\"a6IVtoIjS7Yw-1cFQOGQ6_bjjs4/aY_GfDmiGidcZL_TBO7vI8YP9XY\"",
   "snippet": {
    "publishedAt": "2013-02-15T09:38:27.000Z",
    "channelId": "UCvZuIe7j7oBfaWAL0sO3JzQ",
    "title": "Drivers stoned on marijuana test their driving skills",
    "description": "If you watched this video and liked Addy, you can watch outtakes of her here: http://kiro.tv/WFNEMZ CNN may have just posted their best piece of investigativ...",
    "thumbnails": {
     "default": {
      "url": "https://i.ytimg.com/vi/dw1HavgoK9E/default.jpg"
     },
     "medium": {
      "url": "https://i.ytimg.com/vi/dw1HavgoK9E/mqdefault.jpg"
     },
     "high": {
      "url": "https://i.ytimg.com/vi/dw1HavgoK9E/hqdefault.jpg"
     }
    }
   }
  }
}

API 调用：https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&maxResults=1&q=test&key={YOUR_API_KEY}

带有字段集的响应：

{
 "items": [
  {
   "id": {
    "kind": "youtube#video",
    "videoId": "dw1HavgoK9E"
   },
   "snippet": {
    "publishedAt": "2013-02-15T09:38:27.000Z",
    "channelId": "UCvZuIe7j7oBfaWAL0sO3JzQ",
    "title": "Drivers stoned on marijuana test their driving skills",
    "description": "If you watched this video and liked Addy, you can watch outtakes of her here: http://kiro.tv/WFNEMZ CNN may have just posted their best piece of investigativ...",
    "thumbnails": {
     "default": {
      "url": "https://i.ytimg.com/vi/dw1HavgoK9E/default.jpg"
     },
     "medium": {
      "url": "https://i.ytimg.com/vi/dw1HavgoK9E/mqdefault.jpg"
     },
     "high": {
      "url": "https://i.ytimg.com/vi/dw1HavgoK9E/hqdefault.jpg"
     }
    }
   }
  }
}

API 调用：https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&maxResults=1&q=test&fields=items(id%2Csnippet)&key={YOUR_API_KEY}

于 2013-03-02T02:13:37.237 回答
0

没有。通过代理似乎不是一个好主意。如果你只是在想，我在浪费带宽，让我们削减它，那么你不能。;)

于 2013-03-01T22:16:55.437 回答