如何在YouTube Api限额的情况下获取更多视频

public class YoutubeTest {
  
    private static String matching = "</li><li>";
    private final static String CONTENT = "class=\"yt-lockup-content\"";

    private static final String GET_VEDIO_INFO_PRE = "https://youtube.com/get_video_info?video_id=";

    public static void main(String[] args) throws Exception {
        http("UC24_Z2L-8Ki183AI9zJJzNQ");
    }




    private static void http(String channelId) throws Exception {
        String url = "https://www.youtube.com/channel/" + channelId + "/videos";
        CloseableHttpClient httpclient = HttpClients.createDefault();
        HttpGet httpget = new HttpGet(url);
        CloseableHttpResponse response = httpclient.execute(httpget);
        try {
            HttpEntity entity = response.getEntity();
            String responseYoutube = EntityUtils.toString(entity);
            List<String> countList = new ArrayList<>(100);
            int length = responseYoutube.length();
            int i1, i2 = 0;
            long startTime = System.currentTimeMillis();
            for (int i = 0; i < length; i++) {
                i1 = responseYoutube.indexOf(CONTENT, i);
                if (i1 > 0) {
                    i2 = responseYoutube.indexOf("</div>", i1);
                    if (i2 > 0) {
                        countList.add(responseYoutube.substring(i1, i2));
                        i = i2;
                    }
                } else {
                    break;
                }
            }
            long endEachTime = System.currentTimeMillis();
            System.out.println("遍历耗时：" + (endEachTime - startTime) + "ms");
            List<VideoInfo> videoInfos = new ArrayList<>(30);
            countList.forEach((s) -> {
                int hrefStart = s.indexOf("v=");
                int hrefEnd = s.indexOf("\"", hrefStart);
                VideoInfo videoInfo = new VideoInfo();
                int lastIndex = s.indexOf("</li></ul>");
                if (lastIndex > 0) {
                    String substring = s.substring(s.indexOf(matching) + matching.length(), s.indexOf("</li></ul>"));
                    int time = analysisTime(substring);
                    if (time == -2) {
                        System.out.println(channelId + "返回参数中有解析错误的html标签:" + s);
                    }
                    videoInfo.setPublishTime(time);
                    videoInfo.setVideoId(s.substring(hrefStart + 2, hrefEnd));
                    System.out.println(substring);
                    videoInfos.add(videoInfo);
                }
            });

            videoInfos.forEach(System.out::println);
            System.out.println("打印耗时：" + (System.currentTimeMillis() - endEachTime) + "ms");
            System.out.println(countList.size());
        } finally {
            response.close();
        }

    }

    private final static String CH_SECONDS_PRE = "秒前";
    private final static String CH_MINUTES_PRE = "分鐘前";
    private final static String CH_HOURS_PRE = "小時前";
    private final static String CH_DAYS_PRE = "天前";

    private static int analysisTime(String substring) {
        boolean matches = substring.substring(0, 2).trim().matches("^[0-9]*[1-9][0-9]*$");
        int time=-2;
        if(matches){
            time = Integer.parseInt(substring.substring(0, 2).trim());
            if (substring.contains(CH_SECONDS_PRE)) {
                time = time + 0;
            } else if (substring.contains(CH_MINUTES_PRE)) {
                time = time + 100;
            } else if (substring.contains(CH_HOURS_PRE)) {
                time = time + 200;
            } else if (substring.contains(CH_DAYS_PRE)) {
                time = time + 300;
            } else {
                time = -1;
            }
        }

        return time;
    }

@Setter
@Getter
@ToString
public class VideoInfo {
    private String videoId;
    private int publishTime;

}