【问题标题】:How to fetch name of all files in google drive using google drive api?如何使用 google drive api 获取 google drive 中所有文件的名称?
【发布时间】:2020-10-20 06:43:32
【问题描述】:

我正在尝试获取我的谷歌驱动器中所有文件的名称,但问题是我只能获取特定数量的文件我如何才能消除此限制并获取所有文件 这是谷歌在他们的site上提供的代码

我正在使用谷歌驱动 api v3

from __future__ import print_function
import pickle
import os.path
from googleapiclient.discovery import build
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request

# If modifying these scopes, delete the file token.pickle.
SCOPES = ['https://www.googleapis.com/auth/drive.metadata.readonly']

def main():
    """Shows basic usage of the Drive v3 API.
    Prints the names and ids of the first 10 files the user has access to.
    """
    creds = None
    # The file token.pickle stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first
    # time.
    if os.path.exists('token.pickle'):
        with open('token.pickle', 'rb') as token:
            creds = pickle.load(token)
    # If there are no (valid) credentials available, let the user log in.
    if not creds or not creds.valid:
        if creds and creds.expired and creds.refresh_token:
            creds.refresh(Request())
        else:
            flow = InstalledAppFlow.from_client_secrets_file(
                'credentials.json', SCOPES)
            creds = flow.run_local_server(port=0)
        # Save the credentials for the next run
        with open('token.pickle', 'wb') as token:
            pickle.dump(creds, token)

    service = build('drive', 'v3', credentials=creds)

    # Call the Drive v3 API
    results = service.files().list(
        pageSize=10, fields="nextPageToken, files(id, name)").execute()
    items = results.get('files', [])

    if not items:
        print('No files found.')
    else:
        print('Files:')
        for item in items:
            print(u'{0} ({1})'.format(item['name'], item['id']))

if __name__ == '__main__':
    main()

在这段代码中,有一个变量 pageSize,其值为 10,如果我增加它的值以便获取更多文件,但我想获取所有文件,我该怎么做。

【问题讨论】:

    标签: python python-3.x google-api google-drive-api


    【解决方案1】:

    Files.list 有一个名为 pagesize 的可选参数

    pageSize integer 每页返回的最大文件数。即使在到达文件列表的末尾之前,也可能出现部分或空的结果页面。可接受的值为 1 到 1000(含)。 (默认:100)

    您已将其设置为 pageSize=10,您应该将其设置为 1000,然后使用 nextPageToken 选择下一组(如果还有更多行)。

    我不是 python 开发者,下面的代码是一个猜测。

    page_token = saved_start_page_token;
    while page_token is not None:
        response = service.changes().list(pageToken=page_token,
        pageSize=1000, fields="nextPageToken, files(id, name)").execute()
        page_token = response.get('nextPageToken')
    

    【讨论】:

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