如果 Google Drive 中不存在文件夹，请创建该文件夹
我的应用程序使用 Google Drive Java API.
My Application works with Google Drive Java API.
我只想在 Google Drive 的根目录中创建文件夹，前提是它不存在.我正在使用下面的代码来创建文件夹.
I want to create folder in the root of the Google Drive only if it does not exist. I am using below code to creat folder.
file = service.files().insert(body).execute();
如何检查根文件夹中的文件夹是否存在.我只有文件夹名称Myapp"，没有实例 ID.
How do i check the folder existance in the root folder. I have only the folder name 'Myapp', not the instance ID.
推荐答案
Files.List request = service.files().list().setQ(
"mimeType='application/vnd.google-apps.folder' and trashed=false");
FileList files = request.execute();
您现在可以浏览文件"中的所有文件夹并检查是否有任何文件夹具有搜索的标题.
You could now go through all folders in "files" and check if any of the folders have the searched title.
不要忘记遍历所有页面:
Don't forget to loop through all pages with:
request.setPageToken(files.getNextPageToken());
也许你可以看看这个网站.您可以在搜索条件中添加标题，这样您就不必检索所有文件夹.
Maybe you could have a look at this site. You can add the title in your search criteria instead so you do not have to retrieve all the folders.
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