以Raserhin所说的为基础，列出特定的文件夹ID:

To build on what Raserhin said, to list for a specific folder id:

q='folderid' in parents
q='1eWTOT0KUZiDko-A0JsLCqbhTJ3oOMJ6Wb' in parents

完整的HTTP请求:

GET https://www.googleapis.com/drive/v3/files?q=%22folderid%22%20in%20parents&key=[YOUR_API_KEY]