谁能告诉我如何正确地为此网址传递etag吗?
我像这样路过,但是没用。
[https://www.googleapis.com/youtube/v3/playlistItems?part=snippet,id&playlistId=UUwpy_3CqtfwM7tg2JgQQQyA&maxResults=50&key= {API_KEY}&If-None-Match =“ p4VTdlkQv3HQeTEaXgvLePAydmU / vKZr9jiSytaO7UdTbhKbIrwbX20”
If-None-Match是请求标头,而不是查询参数。需要在请求的headers
中设置此标头。 https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/setRequestHeader