java - 如何通过身份验证的Google服务帐户调用youtube API以在Java中生成 token

Question

我正在开发用于获取特定youtube视频详细信息的Web应用程序。为此，我使用了Google服务帐户进行了诸如 call 授权过程之类的代码。我认为身份验证已完成且未生成 token 。在我运行我的代码时，它收到了类似“INVALID_GRANT”的错误“。请帮助我解决此问题。

        here my sample code is as:

    String clientId = "Something.apps.googleusercontent.com";
                @SuppressWarnings({ "unchecked", "rawtypes" })
                List<String>scops = new <String>ArrayList();
                scops.add("https://www.googleapis.com/auth/youtubepartner");
                final HttpTransport TRANSPORT = new NetHttpTransport();
                final JsonFactory JSON_FACTORY = new JacksonFactory();

                GoogleCredential credential = new GoogleCredential.Builder()
                .setTransport(TRANSPORT)
                .setJsonFactory(JSON_FACTORY)
                .setServiceAccountId(clientId)
                .setServiceAccountScopes(scops)
                .setServiceAccountPrivateKeyFromP12File(new File("key.p12"))
                .build();
                System.out.println("credential............."+credential);
                YouTube youtube=new YouTube.Builder(TRANSPORT, JSON_FACTORY, credential).setApplicationName("test").build();
                System.out.println("Responce.............."+youtube);
                com.google.api.services.youtube.YouTube.Activities act=youtube.activities();
                com.google.api.services.youtube.YouTube.Activities.List list=act.list("");
                list.execute();
                System.out.println("list Details...................."+list);

    here i passes Youtube Api to retrieving the list.

    error :

    Exceptioncom.google.api.client.auth.oauth2.TokenResponseException: 400 Bad Request
    {
      "error" : "invalid_grant"
    }

    i m waiting for all of ur response to resolve this problem..Thanks all once again to spend time with my pro

Answer 1

我对您的身份验证方法不是很熟悉，但是有两件事:

在.setServiceAccountId(clientId)中的

中，您使用 clientId 作为参数，但是在纪录片中，它通常是电子邮件地址:

Builder com.google.api.client.googleapis.auth.oauth2.GoogleCredential.Builder.setServiceAccountId(String serviceAccountId)

@Beta

Beta

Sets the service account ID (typically an e-mail address) or null for none.

在 .setServiceAccountPrivateKeyFromP12File(new File("key.p12"))中的

中，您指定了一个名为 key.p12的文件，它不是

文件

抱歉，如果您的代码不是真正的代码，仅用于演示目的。

如果这两件事都无济于事，您可以尝试以下方法(对我有用):

        // FileDataStoreFactory is used to create new credentials and 
        // simultaneously loads previously generated credentials from a file
        // Specify a location where the file should be stored via DIRECTORY
        // The file is automatically generated and encrypted
        FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(new File(DIRECTORY));

        // Create the GoogleAuthorizationCodeFlow. This is needed to get the user (you?)
        // approval (you need that so you can access data). getClientSecrets() returns a
        // GoogleClientSecrets. If you want to, I can provide some code :)
        // Here you also specify your scopes
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY, getClientSecrets(), Arrays.asList(scope))
            .setCredentialDataStore(StoredCredential.getDefaultDataStore(fileDataStoreFactory)).build();

        // With the GoogleAuthorizationCodeFlow you can create a Credential
        Credential cred = flow.loadCredential("user");

        // Check if the cred is null or expired (credentials last about an hour I think)
        if(cred == null || (cred.getExpiresInSeconds() < 100 && !cred.refreshToken())){
            // If it is expired, you need to refresh it via UserAuthorization, again, if you
            // want to I can provide an example code
            GoogleTokenResponse resp = getUserAuthorization(flow);
            if(resp == null){
                return null;
            }
            cred = flow.createAndStoreCredential(resp, "user");
        }

您可以在代码中完全像GoogleCredential一样使用Credential:

            System.out.println("credential............."+ cred);
            YouTube youtube=new YouTube.Builder(TRANSPORT, JSON_FACTORY, cred).setApplicationName("test").build();
            System.out.println("Responce.............."+youtube);
            com.google.api.services.youtube.YouTube.Activities act=youtube.activities();
            com.google.api.services.youtube.YouTube.Activities.List list=act.list("");
            list.execute();
            System.out.println("list Details...................."+list);

我希望这有帮助 :)

为此，我遵循了本教程: Google's Tutorial
对于服务器端应用程序: Google's Tutorial about server-side applications
以及使用JavaScript的网络应用程序: Google's Tutorial about web-applications