如何从外部java目录调用client_secrets.json？

我基本上有一个动态WEB应用程序，通过servlet我试图检索youtube视频评论

虽然网上有很多关于它的文章，但我不知道为什么没有一篇适合我

第一次尝试：

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);
}

这里我在

Reader-clientSecretReader=new-InputStreamReader（…

第行得到一个nullpointerexception，尽管如果我尝试

nano/home/hazrat/Documents/eclipse-jee-neon-3-linux-gtk-x86_64/eclipse/client_secrets.json，我可以在终端中访问该文件

问题：如何授权我的web应用程序并从外部目录读取client_secrets.json。
有点痛苦，但第二个解决方案起了作用

所以我做错了，我调用了
Auth.class.getResourceAsStream
，它要求数据对
classLoader
可用，但对我的classLoader不可用

因此，我必须做的是从外部目录请求我的客户机_secrets.json，然后您必须使用
FileInputStream
而不是
getResourceAsStream

FileInputStream
和
getResourceAsStream
都可以正常工作，但它们根据您的情况和不同的代码而有所不同

public static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();
public static final JsonFactory JSON_FACTORY = new JacksonFactory();
private static final String CREDENTIALS_DIRECTORY = ".oauth-credentials";

public static Credential authorize(List<String> scopes, String credentialDatastore) throws IOException {
    Reader clientSecretReader = new InputStreamReader(
            new FileInputStream("/client_secrets.json"));
    GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, clientSecretReader);
    System.out.println(clientSecretReader.toString());
    if (clientSecrets.getDetails().getClientId().startsWith("Enter")
            || clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) {
        System.out.println(
                "Enter Client ID and Secret from https://console.developers.google.com/project/_/apiui/credential "
                        + "into src/main/resources/client_secrets.json");
        return null;
    }
    FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(new File(System.getProperty("user.home") + "/" + CREDENTIALS_DIRECTORY));
    DataStore<StoredCredential> datastore = fileDataStoreFactory.getDataStore(credentialDatastore);

    GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
            HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, scopes).setCredentialDataStore(datastore)
            .build();
    LocalServerReceiver localReceiver = new LocalServerReceiver.Builder().setPort(8081).build();

    return new AuthorizationCodeInstalledApp(flow, localReceiver).authorize("user");
}

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 = 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;

        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();
    }
}

public static final HttpTransport HTTP_TRANSPORT=new NetHttpTransport（）；
公共静态最终JsonFactory JSON_FACTORY=new JacksonFactory（）；
私有静态最终字符串凭据\u目录=“.oauth凭据”；
公共静态凭据授权（列表作用域、字符串credentialDatastore）引发IOException{
Reader clientSecretReader=新的InputStreamReader(
新文件输入流（“/client_secrets.json”）；
GoogleClientSecrets clientSecrets=GoogleClientSecrets.load（JSON_工厂，clientSecretReader）；
System.out.println（clientSecretReader.toString（））；
if（clientSecrets.getDetails（）.getClientId（）.startsWith（“输入”）
||clientSecrets.getDetails（）.getClientSecret（）.startsWith（“输入”））{
System.out.println(
“从中输入客户端ID和密码https://console.developers.google.com/project/_/apiui/credential "
+“输入src/main/resources/client_secrets.json”）；
返回null；
}
FileDataStoreFactory FileDataStoreFactory=newfiledatastorefactory（新文件（System.getProperty（“user.home”）+“/”+CREDENTIALS_目录））；
DataStore DataStore=fileDataStoreFactory.getDataStore（credentialDatastore）；
GoogleAuthorizationCodeFlow=新建GoogleAuthorizationCodeFlow.Builder(
HTTP_传输、JSON_工厂、clientSecrets、scopes）。setCredentialDataStore（数据存储）
.build（）；
LocalServerReceiver localReceiver=新的LocalServerReceiver.Builder（）.setPort（8081.build（）；
返回新的AuthorizationCodeInstalledApp（流，localReceiver）。授权（“用户”）；
}
专用静态整数计数器=0；
私有静态YouTube YouTube；
public static void getyoutubeauth（）引发异常{
列表范围=列表。newArrayList（“https://www.googleapis.com/auth/youtube.force-ssl");
凭证=授权（作用域，“评论线程”）；
youtube=new youtube.Builder（Auth.HTTP_TRANSPORT，Auth.JSON_FACTORY，credential）.build（）；
字符串videoId=“KIgxmV9xXBQ”；
//获取视频评论线程
CommentThreadListResponse commentsPage=prepareListRequest（videoId）.execute（）；
while（true）{
handleCommentsThreads（commentsPage.getItems（））；
String nextPageToken=commentsPage.getNextPageToken（）；
if（nextPageToken==null）
打破
commentsPage=prepareListRequest（videoId）.setPageToken（nextPageToken.execute（）；
}
系统输出打印项次（“总计：+计数器）；
}
私有静态YouTube.CommentThreads.List prepareListRequest（字符串videoId）引发异常{
返回youtube.commentThreads（）
.list（“片段、回复”）
.setVideoId（videoId）
.setMaxResults（100L）
.setModerationStatus（“已发布”）
.setTextFormat（“纯文本”）；
}
私有静态void handleCommentsThreads（列出commentThreads）{
for（CommentThread CommentThread:commentThreads）{
List comments=Lists.newArrayList（）；
comments.add（commentThread.getSnippet（）.getTopLevel注释（））；
CommentThreadReplies=commentThread.getReplies（）；
如果（回复！=null）
comments.addAll（repress.getComments（））；
System.out.println（“find”+comments.size（）+comments.”）；
//你的评论符合逻辑吗
计数器+=注释.size（）；
}
}

注意：将
FileInputStream
位置更改为您自己的位置

然后您可以调用
getYoutubeOauth
，希望得到一个有效的响应：）

public static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();
public static final JsonFactory JSON_FACTORY = new JacksonFactory();
private static final String CREDENTIALS_DIRECTORY = ".oauth-credentials";

public static Credential authorize(List<String> scopes, String credentialDatastore) throws IOException {
    Reader clientSecretReader = new InputStreamReader(
            new FileInputStream("/client_secrets.json"));
    GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, clientSecretReader);
    System.out.println(clientSecretReader.toString());
    if (clientSecrets.getDetails().getClientId().startsWith("Enter")
            || clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) {
        System.out.println(
                "Enter Client ID and Secret from https://console.developers.google.com/project/_/apiui/credential "
                        + "into src/main/resources/client_secrets.json");
        return null;
    }
    FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(new File(System.getProperty("user.home") + "/" + CREDENTIALS_DIRECTORY));
    DataStore<StoredCredential> datastore = fileDataStoreFactory.getDataStore(credentialDatastore);

    GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
            HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, scopes).setCredentialDataStore(datastore)
            .build();
    LocalServerReceiver localReceiver = new LocalServerReceiver.Builder().setPort(8081).build();

    return new AuthorizationCodeInstalledApp(flow, localReceiver).authorize("user");
}

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 = 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;

        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();
    }
}