Question

我正在尝试使用关键字从YouTube获取视频。我正在使用YouTube API Java库。我可以成功获得前50条记录，但要获取下一条记录，需要设置 nextPageToken 。但我得到nextPageToken null。以下是我的代码。

YouTube.Search.List search = youtube.search().list("id,snippet");
search.setOauthToken(credential.getAccessToken());
search.setMaxResults(50L);
search.setQ(keywords); // keywords is string type and input by user.
search.setType("video");
search.setFields("items(id/kind,id/videoId,snippet/title,snippet/thumbnails/default/url)");

VideoList returnList = new VideoList();

    do {

        search.setKey("MYKEY");
        SearchListResponse searchResponse = search.execute();
        // This get 50 items proper.
        List<SearchResult> searchResultList = searchResponse.getItems();


        // Why PageInfo is null? 
        PageInfo pageInfo = searchResponse.getPageInfo();

        // int totalResults = pageInfo.getTotalResults();
        // int pageSize = pageInfo.getResultsPerPage();

        if(searchResponse != null){
            // i use searchResultList and update my database for search.
            ....
            ....

            // PageToken also null.
            String pageToken  = searchResponse.getNextPageToken();
            search.setPageToken(pageToken);
        }
        else{
            break;
        }
    } while (true);
    }catch(Exception ex){
        ex.printStackTrace();
    }

Answer 1

由于你没有提到nextpagetoken或pageinfo字段，你得到null，显式设置字段时，搜索结果集会受到限制。

var data = "data-translate='view-7631b26ea80b1b601c313b15cc4e2ab03faedf30'>Avatar data";
data = data.match(/'\b(.*)\b'/gm)

输出：输入搜索字词

扑克脸

PAGE INFO：{“resultsPerPage”：2，“totalResults”：667891}

下一页令牌：CAIQAA

prev page token：null

Youtube搜索：列表获取PageInfo和nextPageToken null

1 个答案: