Question

我正在使用Google Sheets API来获取Java项目的图纸数据。所有这些都在本地正常工作，但是我使用了详细的权限范围https://www.googleapis.com/auth/spreadsheets，该范围“允许对用户工作表及其属性进行读/写访问。”。我不希望不向该应用程序提供对我的Google云端硬盘中所有电子表格的访问权限（只是暂时在本地进行）。

理想情况下，我想请求使用文件ID对文件进行读/写访问的权限。这可能吗？

如果无法实现，我猜想是https://www.googleapis.com/auth/drive.file范围提供了“对应用程序创建或打开的文件的按文件访问”。是我能得到的最接近的。我尚未设法找到一种使用此应用打开文件的方法。我将如何去做？

或者如果上述两种解决方案都不理想或不可能，请告诉我您的建议。

谢谢！

Answer 1

我知道这是很久以前发布的，但是我会给出答案，以帮助将来的开发人员遇到这种情况。

我认为使用服务帐户可以为您提供在此寻找的功能。服务帐户有点像“ bot”用户，用户可以与他们共享文档，然后您的服务器可以登录到该服务帐户以访问那些文档。不必要求访问用户的整个Google驱动器或Google表格，您可以让他们手动与您共享文档，对于大多数用户而言，我认为这样比较舒适。

Here is an example，了解如何在Node.js中进行设置，但是这些想法应该可以很容易地转化为Java。

Answer 2

作用域授予您对api的访问权限，无法将其限制为单个文件或文件组。

Google Sheets API，第4版范围

https://www.googleapis.com/auth/drive查看和管理Google云端硬盘中的文件
https://www.googleapis.com/auth/drive.file查看和管理您使用此应用打开或创建的Google云端硬盘文件和文件夹
https://www.googleapis.com/auth/drive.readonly查看Google云端硬盘中的文件
https://www.googleapis.com/auth/spreadsheets在Google云端硬盘中查看和管理电子表格
https://www.googleapis.com/auth/spreadsheets.readonly查看您的Google电子表格

无法将权限限制为单个文件。假设您正在编辑的文件是由应用程序创建的，那么https://www.googleapis.com/auth/drive.file应该是有效的选项

样品

Java quickstart

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
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.client.util.store.FileDataStoreFactory;
import com.google.api.services.sheets.v4.Sheets;
import com.google.api.services.sheets.v4.SheetsScopes;
import com.google.api.services.sheets.v4.model.ValueRange;

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

public class SheetsQuickstart {
    private static final String APPLICATION_NAME = "Google Sheets API Java Quickstart";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final String TOKENS_DIRECTORY_PATH = "tokens";

    /**
     * Global instance of the scopes required by this quickstart.
     * If modifying these scopes, delete your previously saved tokens/ folder.
     */
    private static final List<String> SCOPES = Collections.singletonList(SheetsScopes.SPREADSHEETS_READONLY);
    private static final String CREDENTIALS_FILE_PATH = "/credentials.json";

    /**
     * Creates an authorized Credential object.
     * @param HTTP_TRANSPORT The network HTTP Transport.
     * @return An authorized Credential object.
     * @throws IOException If the credentials.json file cannot be found.
     */
    private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
        // Load client secrets.
        InputStream in = SheetsQuickstart.class.getResourceAsStream(CREDENTIALS_FILE_PATH);
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

        // Build flow and trigger user authorization request.
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
                .setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))
                .setAccessType("offline")
                .build();
        LocalServerReceiver receier = new LocalServerReceiver.Builder().setPort(8888).build();
        return new AuthorizationCodeInstalledApp(flow, receier).authorize("user");
    }

    /**
     * Prints the names and majors of students in a sample spreadsheet:
     * https://docs.google.com/spreadsheets/d/1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms/edit
     */
    public static void main(String... args) throws IOException, GeneralSecurityException {
        // Build a new authorized API client service.
        final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
        final String spreadsheetId = "1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms";
        final String range = "Class Data!A2:E";
        Sheets service = new Sheets.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT))
                .setApplicationName(APPLICATION_NAME)
                .build();
        ValueRange response = service.spreadsheets().values()
                .get(spreadsheetId, range)
                .execute();
        List<List<Object>> values = response.getValues();
        if (values == null || values.isEmpty()) {
            System.out.println("No data found.");
        } else {
            System.out.println("Name, Major");
            for (List row : values) {
                // Print columns A and E, which correspond to indices 0 and 4.
                System.out.printf("%s, %s\n", row.get(0), row.get(4));
            }
        }
    }
}

Answer 3

我认为，这就是您所要求的。（https://developers.google.com/sheets/api/quickstart/java，https://www.youtube.com/watch?v=zDxTSUWaZs4）我正在使用此代码通过ID访问Google工作表

public class ConnectToDatabase extends AsyncTask<Object, Integer, Long> {

    private static final String APPLICATION_NAME = "Google Sheets API Java Quickstart";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final String TOKENS_DIRECTORY_PATH = "tokens";
    private static String SPREADSHEET_ID = INSERTYOURIDHERE;
    private static MainActivity main_Activity = null;
    /**
     * Global instance of the scopes required by this quickstart.
     * If modifying these scopes, delete your previously saved tokens/ folder.
     */
    private static final List<String> SCOPES = Collections.singletonList(SheetsScopes.SPREADSHEETS_READONLY);
    private static final String CREDENTIALS_FILE_PATH = "credentials.json";


    public ConnectToDatabase(MainActivity mainActivity) {
        this.main_Activity = mainActivity;
    }

    private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {

        // Load client secrets.
        InputStream in =
                main_Activity.getAssets().open("credentials.json");
        //new FileInputStream(CREDENTIALS_FILE_PATH);
        ConnectToDatabase.class.getResourceAsStream(CREDENTIALS_FILE_PATH);
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));


        // Build flow and trigger user authorization request.

        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
                .setDataStoreFactory(new FileDataStoreFactory(main_Activity.getDir(TOKENS_DIRECTORY_PATH, Context.MODE_APPEND)))
                .setAccessType("offline")
                .build();


        AuthorizationCodeInstalledApp ab = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()){
            protected void onAuthorization(AuthorizationCodeRequestUrl authorizationUrl) throws IOException {
                String url = (authorizationUrl.build());
                        /*flow.newAuthorizationUrl()
                        .setScopes(flow.getScopes())
                        .setAccessType("offline")
                        .setClientId(clientSecrets.getDetails().getClientId())
                        .setRedirectUri("/oauth2-callback")
                        .toString();
*/

                Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                main_Activity.startActivity(browserIntent);
            }
        };
        Credential a = ab.authorize("user");


        return a;
    }

    /**
     * Prints the names and majors of students in a sample spreadsheet:
     * https://docs.google.com/spreadsheets/d/1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms/edit
     */
    public static void main(String[] args) throws IOException, GeneralSecurityException {
    // Build a new authorized API client service.
            final NetHttpTransport HTTP_TRANSPORT = new com.google.api.client.http.javanet.NetHttpTransport();
            final String range = "A1:H";
            Sheets service = null;
            try {
                service = new Sheets.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT))
                        .setApplicationName(APPLICATION_NAME)
                        .build();
            } catch (IOException e) {
                e.printStackTrace();
            }
            ValueRange response = null;

            try {
                response = service.spreadsheets().values()
                        .get(SPREADSHEET_ID, range)
                        .execute();
            } catch (IOException e) {
                e.printStackTrace();
            }

            List<List<Object>> values = response.getValues();
            [...]
    }
}

您可能需要根据自己的需要修改此代码段。我将其用作我的应用程序的一部分。

那么这段代码会做什么？执行后，此代码将使用您的个人API密钥连接到google，我将其命名为凭据.json。（在https://developers.google.com/+/web/api/rest/oauth上创建您自己的）身份验证成功后，您将可以访问具有特定ID的Google工作表。

使用Google表格/ Google Drive API请求特定的文件权限

3 个答案: