java - YouTube错误400缺少Prams API V3

Question

我发送以下请求，我得到error 400 missing params，但是当我通过GET手动发送请求时，它工作正常:

try {
        youtube = new YouTube.Builder(Auth.HTTP_TRANSPORT, Auth.JSON_FACTORY, new HttpRequestInitializer() {
            @Override
            public void initialize(HttpRequest arg0) throws IOException {}
        }).setApplicationName("youtube-cmdline-myuploads-sample").build();

        YouTube.Channels.List channelRequest = youtube.channels().list("id,snippet");
        channelRequest.setKey("key");
        //channelRequest.setFields("items/contentDetails,nextPageToken,pageInfo");
        channelRequest.set("channelId", "UC-9-kyTW8ZkZNDHQJ6FgpwQ");
        System.out.println(channelRequest.toString());
        ChannelListResponse channelResult = channelRequest.execute(); //error here
        List<Channel> channelsList = channelResult.getItems();
...

但是由于某些原因，它可行:

https://www.googleapis.com/youtube/v3/search?key=key&channelId=UC-9-kyTW8ZkZNDHQJ6FgpwQ&part=snippet,id&order=date&maxResults=20

更详细的错误:

    {
  "code" : 400,
  "errors" : [ {
    "domain" : "youtube.parameter",
    "location" : "",
    "locationType" : "parameter",
    "message" : "No filter selected.",
    "reason" : "missingRequiredParameter"
  } ],
  "message" : "No filter selected."
}

Answer 1

您使用的是错误的类(class)。它不是 channel ，而是根据您提到的有效网址的搜索列表。

YouTube.Search.List searchRequest = youtube.search().list("id,snippet");