如何识别Drive根文件夹

Question

我无法识别用户云端硬盘的根文件夹。对于英语用户，它被命名为“我的驱动器”，但对于法国用户，它被命名为“Mon Drive”。文件ID对于所有根文件夹都是唯一的，因此无法使用此属性。

如何从metadata api的响应中确定一个文件夹是否是用户驱动器的根文件夹？

Answer 1

如果有人与您共享尚未添加到自己的驱动器的文件夹，则您可能没有文件夹的父ID。基本上，“与我共享”文件夹没有父ID。

您可以执行GET获取根文件夹的详细信息。

GET https://www.googleapis.com/drive/v2/files/root

请记住在此URL的末尾直接提及 root 。这是您的根文件夹的别名。您应该得到一个JSOn响应，其中您应该具有根文件夹的“ id”。

Answer 2

这是一个尝试的链接： https://developers.google.com/drive/v2/reference/files/get#try-it

我提供的文件ID不在根目录中。注意：我们可以从 - ＆gt;获取fileId 右键单击文件＆gt;获得可共享的链接＆gt;＆gt;有id = {*** fileId * } **

我提供了我的fileId，它使用以下JSON输出执行，您可以在其中看到isRoot:false. /* It means that file holding directory is not root directory */

json格式的输出结果：

{
 "kind": "drive#file",
 "id": "0B-loIMZmVFUXZXJDRjM5cjhhNmM",
 "etag": "\"ZAMbZ9abHBEg72qh6Q2B0zjcjMA/MTUwMDg3NzA3ODA0MQ\"",
 "selfLink": "https://www.googleapis.com/drive/v2/files/0B-loIMZmVFUXZXJDRjM5cjhhNmM",
 "webContentLink": "https://drive.google.com/uc?id=0B-loIMZmVFUXZXJDRjM5cjhhNmM&export=download",
 "alternateLink": "https://drive.google.com/file/d/0B-loIMZmVFUXZXJDRjM5cjhhNmM/view?usp=drivesdk",
 "embedLink": "https://drive.google.com/file/d/0B-loIMZmVFUXZXJDRjM5cjhhNmM/preview?usp=drivesdk",
 "iconLink": "https://drive-thirdparty.googleusercontent.com/16/type/video/mpeg",
 "thumbnailLink": "https://lh5.googleusercontent.com/1VGXZZ-keO9yO5P5eYkUWrKXNsi9dG80zGQHlSRr4usJn_AAWGL-prXhoSeBV_XwXKqzQQ=s220",
 "title": "VTS_01_1.VOB",
 "mimeType": "video/mpeg",
 "labels": {
  "starred": false,
  "hidden": false,
  "trashed": false,
  "restricted": false,
  "viewed": true
 },
 "createdDate": "2017-07-11T00:58:46.342Z",
 "modifiedDate": "2017-07-24T06:17:58.041Z",
 "modifiedByMeDate": "2017-07-24T06:17:58.041Z",
 "lastViewedByMeDate": "2017-07-24T06:18:20.076Z",
 "markedViewedByMeDate": "1970-01-01T00:00:00.000Z",
 "version": "677073",
 "parents": [
  {
   "kind": "drive#parentReference",
   "id": "0B-loIMZmVFUXYjFpTnNpWXM5U0k",
   "selfLink": "https://www.googleapis.com/drive/v2/files/0B-loIMZmVFUXZXJDRjM5cjhhNmM/parents/0B-loIMZmVFUXYjFpTnNpWXM5U0k",
   "parentLink": "https://www.googleapis.com/drive/v2/files/0B-loIMZmVFUXYjFpTnNpWXM5U0k",
   "isRoot": false
  }
 ],
 "downloadUrl": "https://doc-0k-48-docs.googleusercontent.com/docs/securesc/bculidesqdf6868f2kpe9ck7n2ek7rik/tf0bp5qc9adb3l2nvq8224jlefl11mbl/1500876000000/00155113073667341356/00155113073667341356/0B-loIMZmVFUXZXJDRjM5cjhhNmM?e=download&gd=true",
 "userPermission": {
  "kind": "drive#permission",
  "etag": "\"ZAMbZ9abHBEg72qh6Q2B0zjcjMA/sYdDjsCbpl5sdrQ1oJnGyZ0gu5M\"",
  "id": "me",
  "selfLink": "https://www.googleapis.com/drive/v2/files/0B-loIMZmVFUXZXJDRjM5cjhhNmM/permissions/me",
  "role": "owner",
  "type": "user"
 },
 "originalFilename": "VTS_01_1.VOB",
 "fileExtension": "VOB",
 "md5Checksum": "5328c8049ca351743ac7f30af1c242f6",
 "fileSize": "389033984",
 "quotaBytesUsed": "389033984",
 "ownerNames": [
  "Uddhav Gautam"
 ],
 "owners": [
  {
   "kind": "drive#user",
   "displayName": "Uddhav Gautam",
   "picture": {
    "url": "https://lh3.googleusercontent.com/-UoxeYRihw94/AAAAAAAAAAI/AAAAAAAAFBQ/GY5GOL_IGwU/s64/photo.jpg"
   },
   "isAuthenticatedUser": true,
   "permissionId": "00155113073667341356",
   "emailAddress": "infofuniversities@gmail.com"
  }
 ],
 "lastModifyingUserName": "Uddhav Gautam",
 "lastModifyingUser": {
  "kind": "drive#user",
  "displayName": "Uddhav Gautam",
  "picture": {
   "url": "https://lh3.googleusercontent.com/-UoxeYRihw94/AAAAAAAAAAI/AAAAAAAAFBQ/GY5GOL_IGwU/s64/photo.jpg"
  },
  "isAuthenticatedUser": true,
  "permissionId": "00155113073667341356",
  "emailAddress": "infofuniversities@gmail.com"
 },
 "capabilities": {
  "canCopy": true,
  "canEdit": true
 },
 "editable": true,
 "copyable": true,
 "writersCanShare": true,
 "shared": true,
 "explicitlyTrashed": false,
 "appDataContents": false,
 "headRevisionId": "0B-loIMZmVFUXWmFnM0Q2YnpDaGphc0lPMXNNZ1JYc2JpdllBPQ",
 "videoMediaMetadata": {
  "width": 720,
  "height": 480,
  "durationMillis": "494631"
 },
 "spaces": [
  "drive"
 ]
}

如果您想知道目录是否是根目录？你可以简单地使用  if(yourDirectory.getParents().size() > 0) { /* your directory can't be root here. Root directory has no parent directory */ }