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建立應用程式儲存內容的捷徑檔案

Google 雲端硬碟中的第三方捷徑是純中繼資料檔案，可連結至儲存在外部、第三方擁有的儲存系統中的檔案。這些快捷鍵視為「內容」的參考連結應用程式儲存在雲端硬碟，通常位於不同的資料儲存庫或雲端儲存系統中。

如要建立第三方捷徑，請使用 Google Drive API 的 files.create 方法，並設定將 MIME 類型變更為 application/vnd.google-apps.drive-sdk。不上傳任何的內容。詳情請參閱「Google Workspace」和 Google 雲端硬碟支援的 MIME 類型。

無法上傳或下載第三方捷徑。

以下程式碼範例將說明如何使用用戶端程式庫：

Java

drive/snippets/drive_v3/src/main/java/CreateShortcut.java

前往 GitHub 查看

import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
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.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.util.Arrays;

/* Class to demonstrate Drive's create shortcut use-case */
public class CreateShortcut {

  /**
   * Creates shortcut for file.
   *
   * @throws IOException if service account credentials file not found.
   */
  public static String createShortcut() throws IOException {
        /* Load pre-authorized user credentials from the environment.
        TODO(developer) - See https://developers.google.com/identity for
        guides on implementing OAuth2 for your application.*/
    GoogleCredentials credentials = GoogleCredentials.getApplicationDefault()
        .createScoped(Arrays.asList(DriveScopes.DRIVE_FILE));
    HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(
        credentials);
    // Build a new authorized API client service.
    Drive service = new Drive.Builder(new NetHttpTransport(),
        GsonFactory.getDefaultInstance(),
        requestInitializer)
        .setApplicationName("Drive samples")
        .build();
    try {
      // Create Shortcut for file.
      File fileMetadata = new File();
      fileMetadata.setName("Project plan");
      fileMetadata.setMimeType("application/vnd.google-apps.drive-sdk");

      File file = service.files().create(fileMetadata)
          .setFields("id")
          .execute();
      System.out.println("File ID: " + file.getId());
      return file.getId();
    } catch (GoogleJsonResponseException e) {
      // TODO(developer) - handle error appropriately
      System.err.println("Unable to create shortcut: " + e.getDetails());
      throw e;
    }
  }
}

Python

drive/snippets/drive-v3/file_snippet/create_shortcut.py

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import google.auth
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError


def create_shortcut():
  """Create a third party shortcut

  Load pre-authorized user credentials from the environment.
  TODO(developer) - See https://developers.google.com/identity
  for guides on implementing OAuth2 for the application.
  """
  creds, _ = google.auth.default()

  try:
    # create drive api client
    service = build("drive", "v3", credentials=creds)
    file_metadata = {
        "name": "Project plan",
        "mimeType": "application/vnd.google-apps.drive-sdk",
    }

    # pylint: disable=maybe-no-member
    file = service.files().create(body=file_metadata, fields="id").execute()
    print(f'File ID: {file.get("id")}')

  except HttpError as error:
    print(f"An error occurred: {error}")
  return file.get("id")


if __name__ == "__main__":
  create_shortcut()

PHP

drive/snippets/drive_v3/src/DriveCreateShortcut.php

前往 GitHub 查看

use Google\Client;
use Google\Service\Drive;
use Google\Service\Drive\DriveFile;
function createShortcut()
{
    try {

        $client = new Client();
        $client->useApplicationDefaultCredentials();
        $client->addScope(Drive::DRIVE);
        $driveService = new Drive($client);
        $fileMetadata = new DriveFile(array(
            'name' => 'Project plan',
            'mimeType' => 'application/vnd.google-apps.drive-sdk'));
        $file = $driveService->files->create($fileMetadata, array(
            'fields' => 'id'));
        printf("File ID: %s\n", $file->id);
        return $file->id;

    } catch(Exception $e) {
        echo "Error Message: ".$e;
    }

}

.NET

drive/snippets/drive_v3/DriveV3Snippets/CreateShortcut.cs

前往 GitHub 查看

using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Services;

namespace DriveV3Snippets
{
    // Class to demonstrate Drive's create shortcut use-case
    public class CreateShortcut
    {
        /// <summary>
        /// Create a third party shortcut.
        /// </summary>
        /// <returns>newly created shortcut file id, null otherwise.</returns>
        public static string DriveCreateShortcut()
        {
            try
            {
                /* Load pre-authorized user credentials from the environment.
                 TODO(developer) - See https://developers.google.com/identity for 
                 guides on implementing OAuth2 for your application. */
                GoogleCredential credential = GoogleCredential
                    .GetApplicationDefault()
                    .CreateScoped(DriveService.Scope.Drive);

                // Create Drive API service.
                var service = new DriveService(new BaseClientService.Initializer
                {
                    HttpClientInitializer = credential,
                    ApplicationName = "Drive API Snippets"
                });

                // Create Shortcut for file.
                var fileMetadata = new Google.Apis.Drive.v3.Data.File()
                {
                    Name = "Project plan",
                    MimeType = "application/vnd.google-apps.drive-sdk"
                };
                var request = service.Files.Create(fileMetadata);
                request.Fields = "id";
                var file = request.Execute();
                // Prints the shortcut file id.
                Console.WriteLine("File ID: " + file.Id);
                return file.Id;
            }
            catch (Exception e)
            {
                // TODO(developer) - handle error appropriately
                if (e is AggregateException)
                {
                    Console.WriteLine("Credential Not found");
                }
                else
                {
                    throw;
                }
            }
            return null;
        }
    }
}

Node.js

drive/snippets/drive_v3/file_snippets/create_shortcut.js

前往 GitHub 查看

/**
 * Create a third party shortcut
 * @return{obj} shortcut Id
 * */
async function createShortcut() {
  // Get credentials and build service
  // TODO (developer) - Use appropriate auth mechanism for your app

  const {GoogleAuth} = require('google-auth-library');
  const {google} = require('googleapis');

  const auth = new GoogleAuth({
    scopes: 'https://www.googleapis.com/auth/drive',
  });
  const service = google.drive({version: 'v3', auth});
  const fileMetadata = {
    name: 'Project plan',
    mimeType: 'application/vnd.google-apps.drive-sdk',
  };

  try {
    const file = await service.files.create({
      requestBody: fileMetadata,
      fields: 'id',
    });
    console.log('File Id:', file.data.id);
    return file.data.id;
  } catch (err) {
    // TODO(developer) - Handle error
    throw err;
  }
}

第三方捷徑的運作方式

使用 files.create 方法建立第三方捷徑時，系統會使用用於插入中繼資料及建立應用程式捷徑的 POST 要求內容：

POST https://www.googleapis.com/drive/v3/files
Authorization: AUTHORIZATION_HEADER

{
  "title": "FILE_TITLE",
  "mimeType": "application/vnd.google-apps.drive-sdk"
}

使用者點選第三方捷徑後，系統會將使用者重新導向至外部捷徑存放該檔案的網站。雲端硬碟檔案 ID 位於 state 參數。如要詳情請參閱「處理應用程式專屬開啟網址」文件。

接著，第三方應用程式或網站就會負責比對 state 參數傳送至其系統內的內容。

新增自訂縮圖和可建立索引的文字

如要提高與第三方捷徑相關聯的檔案曝光度，您就能上傳縮圖圖片和可編入索引的文字修改檔案中繼資料詳情請參閱「管理檔案中繼資料」。

建立應用程式儲存內容的捷徑檔案

Java

Python

PHP

.NET

Node.js

第三方捷徑的運作方式

新增自訂縮圖和可建立索引的文字

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