Google共享文件夹文件获取异常：仅得到“Getting Started”文件求助

Hey there! Let's work through this frustrating issue you're facing—only pulling up the "Getting Started" file when trying to access a shared folder via the Google Drive API is totally fixable, so let's break it down step by step.

1. You're Using the Wrong API Method #

It sounds like you tried using files().get, but that method is designed to fetch details of a single specific file—not list all content in a folder. To see every file in your shared folder, you need to use files().list with a filter query targeting the folder's contents.

2. Permissions Are Likely Missing #

Double-check that your service account has been granted access to the shared folder:

• Locate your service account's email in your JSON key file (look for the client_email field)
• Ask the folder owner to share the folder with this email, granting at least "Viewer" permissions (or "Editor" if you need to download/write files)

3. Clean Up Your Authentication Setup #

You've imported two different service account auth libraries (google.oauth2.service_account and oauth2client.service_account)—this can cause conflicts. Stick to the newer, maintained google-auth library for better reliability.

Corrected Code Example #

Here's a cleaned-up script that will list all files in your shared folder and let you download them:

from google.oauth2 import service_account
from googleapiclient.discovery import build
import io
from googleapiclient.http import MediaIoBaseDownload

# Configuration - update these values
SERVICE_ACCOUNT_KEY_PATH = "path/to/your/service-account-key.json"
SHARED_FOLDER_ID = "your-shared-folder-id-here"
SCOPES = ["https://www.googleapis.com/auth/drive.readonly"]

# Authenticate with the Drive API
credentials = service_account.Credentials.from_service_account_file(
    SERVICE_ACCOUNT_KEY_PATH, scopes=SCOPES
)
drive_service = build("drive", "v3", credentials=credentials)

# List all non-trashed files in the shared folder
def list_shared_folder_contents(folder_id):
    results = drive_service.files().list(
        q=f"'{folder_id}' in parents and trashed=false",
        fields="files(id, name, mimeType)",
        supportsAllDrives=True  # Add this if the folder is in a Shared Drive/Team Drive
    ).execute()
    items = results.get("files", [])
    
    if not items:
        print("No files found in the shared folder.")
        return []
    print("Files in shared folder:")
    for item in items:
        print(f"- {item['name']} (ID: {item['id']})")
    return items

# Download a specific file from the folder
def download_file(file_id, file_name):
    request = drive_service.files().get_media(fileId=file_id)
    fh = io.FileIO(file_name, "wb")
    downloader = MediaIoBaseDownload(fh, request)
    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print(f"Download progress: {int(status.progress() * 100)}%")
    print(f"File saved as {file_name}")

# Run the functions
folder_files = list_shared_folder_contents(SHARED_FOLDER_ID)
# Example: Download the first file in the list
if folder_files:
    download_file(folder_files[0]["id"], folder_files[0]["name"])

Key Notes: #

• The q parameter filters files where the shared folder is a parent, and excludes any trashed files
• Add supportsAllDrives=True if your shared folder is part of a Google Workspace Shared Drive/Team Drive
• Double-check your folder ID is correct (you can grab it from the folder's URL in Google Drive)

If you still don't see files after this, triple-check that the service account email was correctly added to the folder's sharing settings—typos here are a super common culprit!

内容的提问来源于stack exchange，提问作者Rod0n