Question

我似乎试图将Java应用程序存储到我的GoogleDrive文件夹中存储的文件列表中。

我在Developer Console中有一个项目设置。我已为该项目启用了Drive API 我已经为服务帐户创建了Auth凭证 - 并且正在使用生成的P12密钥。

我的代码如下所示：

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.auth.oauth2.CredentialRefreshListener;
import com.google.api.client.auth.oauth2.TokenErrorResponse;
import com.google.api.client.auth.oauth2.TokenResponse;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Collections;
import java.util.List;

public class GoogleDriveTest {

    /** Global instance of the JSON factory. */
    private static final JsonFactory JSON_FACTORY = new JacksonFactory() ;

    /** instance of the HTTP transport. */
    private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport() ;

    /** Global instance of the Google Drive - the first connect will initialize */
    private static Drive drive;

    /*
     * instance variables
     */
    private String accessToken ;

    public static void main(String[] args) throws GeneralSecurityException, IOException {

        String CLIENTID = "XXXXXXXXXXX-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX@developer.gserviceaccount.com" ;
        String CLIENTUSER = "XXXXXXXX@gmail.com" ;
        String P2FILE = "random/src/main/resources/test.p12" ;

        try {
            GoogleCredential credential = new GoogleCredential.Builder().setTransport(HTTP_TRANSPORT)
                    .setJsonFactory(JSON_FACTORY)
                    .setServiceAccountId(CLIENTID)
                    .setServiceAccountScopes(Collections.singleton(DriveScopes.DRIVE_FILE))
                    .setServiceAccountPrivateKeyFromP12File(new java.io.File(P2FILE))
                    .setServiceAccountUser(CLIENTUSER)
                    .addRefreshListener(new CredentialRefreshListener() {
                        @Override
                        public void onTokenResponse(
                                Credential credential,
                                TokenResponse tokenResponse) throws IOException {

                            String token = tokenResponse.getAccessToken();
                            System.out.println("GOOGLEDRIVE token refreshed " + tokenResponse.getTokenType() + " successfully");
                        }

                        @Override
                        public void onTokenErrorResponse(
                                Credential credential,
                                TokenErrorResponse tokenErrorResponse) throws IOException {

                            System.out.println("GOOGLEDRIVE token refresh failure : " + tokenErrorResponse);
                        }
                    })
                    .build();

            /*
             * set up the global Drive instance
             */
            drive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential).setApplicationName("API Project").build();

            /*
             * output results
             */
            Drive.Files.List fileRequest = drive.files().list() ;
            FileList afiles = fileRequest.execute() ;
            List<File> bFiles = afiles.getItems() ;
            for(File file : bFiles) {
                System.out.println(file.getTitle()) ;
             }
        }
        catch (GeneralSecurityException | IOException e) {
            e.printStackTrace();
        }

    }

}

但我看到的输出是：

GOOGLEDRIVE token refresh failure : null
com.google.api.client.auth.oauth2.TokenResponseException: 401 Unauthorized
    at com.google.api.client.auth.oauth2.TokenResponseException.from(TokenResponseException.java:105)
    at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:287)
    at com.google.api.client.auth.oauth2.TokenRequest.execute(TokenRequest.java:307)
    at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.executeRefreshToken(GoogleCredential.java:384)
    at com.google.api.client.auth.oauth2.Credential.refreshToken(Credential.java:489)
    at com.google.api.client.auth.oauth2.Credential.intercept(Credential.java:217)
    at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:859)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
    at GoogleDriveTest.main(GoogleDriveTest.java:81)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)

Process finished with exit code 0

任何人都可以提供有关Google云端硬盘的服务帐户访问权限以及我在这里可能出错的内容吗？

由于服务帐户是在我的Google帐户（XXXXXXXX@gmail.com）下创建的，因此我认为一旦API启用，它就可以访问云端硬盘。

我已经看过其他关于通过管理控制台向域帐户授予服务帐户访问权限的帖子 - 但我的帐户是简单/标准的Google帐户。我甚至不确定域帐号是什么！

非常感谢所有帮助。

401通过服务帐户和OAuth2向Google云端硬盘进行身份验证时的响应

0 个答案: