(Java) OneDrive -- Download to File

Downloads the contents of a DriveItem directly to a file in the local filesystem.

Note: This example requires Chilkat v9.5.0.68 or greater.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    // Use your previously obtained access token here:
    // See the following examples for getting an access token:
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
    //    Refresh Access Token (Azure AD v2.0 Endpoint).
    //    Refresh Access Token (Azure AD Endpoint).

    // (Make sure your token was obtained with the FilesRead or Files.ReadWrite scope.)
    http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN");

    // Sends the following GET request:
    // GET https://graph.microsoft.com/v1.0/me/drive/root:/{item-path}:/content

    // Make sure to automatically follow redirects
    http.put_FollowRedirects(true);

    // This example will download /Misc/wildlife/penguins.jpg
    http.SetUrlVar("item_path","Misc/wildlife/penguins.jpg");

    // Stream the response body directly to a local file.
    String localPath = "qa_output/penguins.jpg";

    boolean success = http.Download("https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}:/content",localPath);
    if (http.get_LastMethodSuccess() != true) {
        System.out.println(http.lastErrorText());
        return;
        }

    // If the response status code was not 200, then it failed.
    if (http.get_LastStatus() != 200) {
        System.out.println("Response Status Code = " + http.get_LastStatus());
        System.out.println("Failed.");
        return;
        }

    // If we got here, then the file was successfully downloaded.
    System.out.println("Download from OneDrive successful.");
  }
}