如何在 youtube api 中调用 client_secrets.json？

Question

我正在尝试在我的动态网络应用项目中通过 youtube API 获取 youtube 视频 cmets。

我的代码：

private static int counter = 0;
private static YouTube youtube;

public static void getYoutubeOauth() throws Exception {
    List<String> scopes = Lists.newArrayList("https://www.googleapis.com/auth/youtube.force-ssl");

    Credential credential = Auth.authorize(scopes, "commentthreads");
    youtube = new YouTube.Builder(Auth.HTTP_TRANSPORT, Auth.JSON_FACTORY, credential).build();

    String videoId = "KIgxmV9xXBQ";

    // Get video comments threads
    CommentThreadListResponse commentsPage = prepareListRequest(videoId).execute();

    while (true) {
        handleCommentsThreads(commentsPage.getItems());

        String nextPageToken = commentsPage.getNextPageToken();
        if (nextPageToken == null)
            break;

        // Get next page of video comments threads
        commentsPage = prepareListRequest(videoId).setPageToken(nextPageToken).execute();
    }

    System.out.println("Total: " + counter);
}

private static YouTube.CommentThreads.List prepareListRequest(String videoId) throws Exception {

    return youtube.commentThreads()
                  .list("snippet,replies")
                  .setVideoId(videoId)
                  .setMaxResults(100L)
                  .setModerationStatus("published")
                  .setTextFormat("plainText");
}

private static void handleCommentsThreads(List<CommentThread> commentThreads) {

    for (CommentThread commentThread : commentThreads) {
        List<Comment> comments = Lists.newArrayList();
        comments.add(commentThread.getSnippet().getTopLevelComment());

        CommentThreadReplies replies = commentThread.getReplies();
        if (replies != null)
            comments.addAll(replies.getComments());

        System.out.println("Found " + comments.size() + " comments.");

        // Do your comments logic here
        counter += comments.size();
    }
}

在执行上述代码时，我在Credential credential = Auth.authorize(scopes, "commentthreads"); 行得到一个java.lang.NullPointerException

仅供参考：我知道NullPointerException 是什么。即string n = null; if(n=="h"); 导致NullPointerException

我希望client_secrets.json 文件可以反驳原因，因为我不知道在哪里放置以及如何在我的代码中调用它。

我当前的client_secrets.json放在/home/UserName/workspace/RemoteSystemsTempFiles/Duck/WebContent/WEB-INF/client_secrets.json下

Answer 1

您可以按如下方式加载客户端机密 json 文件：

// Load client secrets.
Reader clientSecretReader = new InputStreamReader(Auth.class.getResourceAsStream("/client_secrets.json"));
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, clientSecretReader);

有关如何使用 Auth 和 google API 的更多信息，请查看here