如果 Google Drive 中不存在文件夹，请创建该文件夹 [英] Create folder if it does not exist in the Google Drive

问题描述

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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