How do I add a file into a HTTP PUT request calling the Microsoft Graph API?

Question

I am trying to upload a file to a SharePoint Drive by using Microsoft Graph. I am new to REST APIs and Microsoft Graph.

This is what the documentation says:

PUT /me/drive/root:/FolderA/FileB.txt:/content
Content-Type: text/plain
The contents of the file goes here.

Before all of this, I do have my authorization/bearer token and I am able to call the HTTP get but I am not able to upload the file using HTTP PPU.

URL url = new URL(newUrl);
String readLine;
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Authorization","Bearer "+ token);
connection.setRequestProperty("Accept","application/json");

This returns java.io.IOException: Server returned HTTP response code: 411 for URL.

I have tried passing it as a binary stream but the request is still failing.

Answer 1

The "type" of the file is determined by the Content-Type header. For some context, the Accept header states the format you expect the response body to use while the Content-Type states the format of your request.

To upload a standard text file, you'll want to use Content-Type: text/plain:

URL url = new URL(newUrl);
String readLine;
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Authorization","Bearer "+ token);
connection.setRequestProperty("Accept","application/json");
connection.setRequestProperty("Content-Type","text/plain");