Question

我正在尝试使用python api从Google云端硬盘下载一些图像文件。我使用的代码首先获取文件资源对象，找到downloadUrl并使用它来下载文件。问题是gif和png文件似乎没有下载URL。

service = self.user.profile.DriveService()
conditions = []
conditions.append("title='image.png')
conditions.append("trashed = false")
response = service.files().list(q=" and ".join(conditions)).execute()
f = response['items'][0]
url = f['downloadUrl']
# Now download the file from url
...

这适用于下载文本和html文件。当我尝试下载图像文件时，它们具有downloadUrl属性。这是一个示例图像文件资源

u'alternateLink':  u'https://docs.google.com/document/d/1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk/edit',
u'appDataContents': False,
u'createdDate': u'2013-01-20T08:39:55.314Z',
u'editable': True,
u'embedLink': u'https://docs.google.com/document/d/1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk/preview',
u'etag': u'"Q0cVodxX8sh4vfxZTlOyWcmmc0k/MTM1ODY3MTE5NzY5Nw"',
u'exportLinks': {u'application/pdf': u'https://docs.google.com/feeds/download/documents/export/Export?   id=1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk&exportFormat=pdf',
                 u'application/rtf':     u'https://docs.google.com/feeds/download/documents/export/Export?id=1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk&exportFormat=rtf',
              u'application/vnd.oasis.opendocument.text': u'https://docs.google.com/feeds/download/documents/export/Export?id=1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk&exportFormat=odt',
              u'application/vnd.openxmlformats-officedocument.wordprocessingml.document': u'https://docs.google.com/feeds/download/documents/export/Export?id=1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk&exportFormat=docx',
              u'text/html': u'https://docs.google.com/feeds/download/documents/export/Export?id=1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk&exportFormat=html',
              u'text/plain': u'https://docs.google.com/feeds/download/documents/export/Export?id=1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk&exportFormat=txt'},
u'iconLink': u'https://ssl.gstatic.com/docs/doclist/images/icon_11_document_list.png',
u'id': u'1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk',
u'kind': u'drive#file',
u'labels': {...},
u'lastModifyingUserName': u'Max Ferguson',
u'lastViewedByMeDate': u'2013-01-20T08:39:57.697Z',
u'mimeType': u'application/vnd.google-apps.document',
u'modifiedByMeDate': u'2013-01-20T08:39:57.697Z',
u'modifiedDate': u'2013-01-20T08:39:57.697Z',
u'ownerNames': [u'Max Ferguson'],
u'parents': [{u'id': u'0BxiZtRrps_bKaXM1OXJtUXBkOTg',
           u'isRoot': False,
           u'kind': u'drive#parentReference',
           u'parentLink': u'https://www.googleapis.com/drive/v2/files/0BxiZtRrps_bKaXM1OXJtUXBkOTg',
           u'selfLink': u'https://www.googleapis.com/drive/v2/files/1S9amlqcwLl9FOYmHFhv_RK_NwPI47IWj8iGcIK9p8hk/parents/0BxiZtRrps_bKaXM1OXJtUXBkOTg'}],

我无法理解为什么没有downloadUrl。这可能是因为mimetype是application / vnd.google-apps.document，但该文件肯定是图像。缩略图链接指向图像。任何帮助，将不胜感激。

Answer 1

Google原生格式的文档（application / vnd.google-apps.XXX）没有downloadUrl属性，您可以使用exportLinks集合以其中一种支持的格式下载它们：

https://developers.google.com/drive/manage-downloads#downloading_google_documents

从Google云端硬盘下载图片

1 个答案: