Create a folder inside another with parents argument in java desktop application - google-drive-api

Question

I am trying to create a folder inside another folder by setting the id of parents property, but the folder is not created inside it.I need a solution for a java desktop application but i cant found the right syntax for the parents property in order to perform my post request correctly (HttpPost object is the org.apache.http.client.methods.HttpPost)
HttpPost post2 = new HttpPost("https://www.googleapis.com/drive/v2/files");
post2.addHeader("Content-Type", "application/json");
post2.addHeader("Authorization","Bearer XXXXXX");
JsonObject jsonObject2 = new JsonObject();
jsonObject2.addProperty("title", userid);
jsonObject2.addProperty("parents", "['kind': 'drive#parentReference',
{'id': '"+MY_PARENT_FILE_ID+"'}]");
jsonObject2.addProperty("mimeType", "application/vnd.google-apps.folder");
post2.setEntity(new StringEntity(jsonObject2.toString()));
HttpResponse response2 = httpClient.execute(post2);
Can anyone tell me what I am doing wrong, or suggest a solution?

Answer 1

I use the Google API Ruby Client gem found at https://github.com/google/google-api-ruby-client.
authenticated_client_and_drive
is a method that returns and authenticated client and drive instance. Essentially, you make a post request to https://accounts.google.com/o/oauth2/token with a token that looks like:
{'refresh_token' => USERS_EXISTING_REFRESH_TOKEN,
'client_id' => 'YOUR_CLIENT_ID',
'client_secret' => 'YOUR_CLIENT_SECRET',
'grant_type' => 'refresh_token'}
Then it's as simple as implementing a method like:
def create_folder_within_folder(title, parent_folder_id)
# INPUTS: a folder title (string) and parent_folder_id (string)
# OUTPUT: the file_id (string) of the newly created folder
#client, #drive = authenticated_client_and_drive
#folder = #drive.files.insert.request_schema.new({
'title' => title,
'description' => 'Your Description Here',
'mimeType' => 'application/vnd.google-apps.folder',
'parents' => [{"id" => parent_folder_id}]
})
#result = #client.execute(
:api_method => #drive.files.insert,
:body_object => #folder)
return #result.data.id
end
Hope this points you in the right direction!