Question

我尝试了多种方法通过oauth和API从谷歌驱动器下载文件，但是我无法下载文件。我相信我已经正确认证了。运行我的代码后，看起来下载文件成功（没有错误），但没有下载文件。

这是我到目前为止尝试过的代码：

def download_file(file_id, mimeType):
    if "google-apps" in mimeType:
        return
    request = drive_service.files().get(fileId=file_id)
    fh = io.BytesIO()
    downloader = MediaIoBaseDownload(fh, request)
    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print "Download %d%%." % int(status.progress() * 100)

然而，这导致“下载100％”。正在打印到控制台，但没有下载文件。

我也尝试过：

def download2(download_url):
    resp, content = drive_service._http.request(download_url)
    if resp.status == 200:
        print 'Status: %s' % resp
        return content
    else:
        print 'An error occurred: %s' % resp
        return None

这也不会产生下载的文件，但它确实给了我200条消息。

这些似乎都与API正确接触。我需要做一些额外的步骤来实际获取计算机上的文件吗？

编辑：

这是我的代码的其余部分：

import json
import webbrowser

import httplib2
import io
from apiclient.http import MediaIoBaseDownload

from apiclient import discovery
from oauth2client import client

if __name__ == '__main__':
  flow = client.flow_from_clientsecrets(
    'client_secrets.json',
    scope='https://www.googleapis.com/auth/drive.readonly',
    redirect_uri='urn:ietf:wg:oauth:2.0:oob')

  auth_uri = flow.step1_get_authorize_url()
  webbrowser.open(auth_uri)

  auth_code = raw_input('Enter the auth code: ')

  credentials = flow.step2_exchange(auth_code)
  http_auth = credentials.authorize(httplib2.Http())

  drive_service = discovery.build('drive', 'v3', http_auth) #also tried v2
  files = drive_service.files().list().execute()
  for f in files['files']:
    #call one of the two download methods with the proper arguments

Answer 1

从BytesIO更改为FileIO允许实际下载文件。这是我修改代码的行：

fh = io.FileIO(filename, 'wb')

以下是允许我下载文件的完整代码：

def download_file(file_id, mimeType, filename):
    if "google-apps" in mimeType:
        # skip google files
        return
    request = drive_service.files().get_media(fileId=file_id)
    fh = io.FileIO(filename, 'wb')
    downloader = MediaIoBaseDownload(fh, request)
    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print "Download %d%%." % int(status.progress() * 100)


if __name__ == '__main__':
    flow = client.flow_from_clientsecrets(
      'client_secrets.json',
      scope='https://www.googleapis.com/auth/drive.readonly',
      redirect_uri='urn:ietf:wg:oauth:2.0:oob')

    auth_uri = flow.step1_get_authorize_url()
    webbrowser.open(auth_uri)

    print auth_uri

    auth_code = raw_input('Enter the auth code: ')

    credentials = flow.step2_exchange(auth_code)
    http_auth = credentials.authorize(httplib2.Http())

    drive_service = discovery.build('drive', 'v3', http_auth)
    files = drive_service.files().list().execute()
    for f in files['files']:
        print f['name']
        download_file(f['id'], f['mimeType'], f['name'])

Answer 2

该文件正在下载，但谷歌提供的示例并未对该文件执行任何操作。

您只需要像这样返回BytesIO缓冲区的内容（只需在末尾添加一个返回）...

def download_file(service, file_id):
    request = service.files().get_media(fileId=file_id)
    fh = io.BytesIO()
    downloader = MediaIoBaseDownload(fh, request)
    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print("Download %d%%." % int(status.progress() * 100))
    return fh.getvalue()

谷歌驱动器API下载文件 - python - 没有下载文件

2 个答案: