(Java) Xero Upload Attachment

Demonstrates how to upload an attachment to Xero.

For more information, see https://developer.xero.com/documentation/api/attachments#POST

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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();

    // Important: Make sure your OAuth2 access token was obtained with the scope "accounting.attachments"
    // included in the list of scopes.

    CkJsonObject jsonToken = new CkJsonObject();
    boolean success = jsonToken.LoadFile("qa_data/tokens/xero-access-token.json");
    if (success == false) {
        System.out.println(jsonToken.lastErrorText());
        return;
        }

    http.put_AuthToken(jsonToken.stringOf("access_token"));

    // Replace the value here with an actual tenant ID obtained from this example:
    // Get Xero Tenant IDs
    http.SetRequestHeader("Xero-tenant-id","83299b9e-5747-4a14-a18a-a6c94f824eb7");

    http.put_Accept("application/json");

    String url = "https://api.xero.com/api.xro/2.0/{$Endpoint}/{$Guid}/Attachments/{$Filename}";

    // Endpoint can be Invoices, Receipts, CreditNotes, PurchaseOrders, etc.
    http.SetUrlVar("Endpoint","Invoices");

    // Guid is the ID of the item, such as the InvoiceID.
    http.SetUrlVar("Guid","0032f627-3156-4d30-9b1c-4d3b994dc921");

    // Filename is the filename of the attachment you are uploading.
    http.SetUrlVar("Filename","penguins.jpg");

    // Load the file to be uploaded (from the local filesystem).
    CkBinData bd = new CkBinData();
    success = bd.LoadFile("qa_data/jpg/penguins.jpg");
    if (success == false) {
        System.out.println("Failed to load attachment file.");
        return;
        }

    // Indicate the content-type according to the file content type.
    // Common content-types are:   image/jpg, image/png, application/pdf, application/zip, application/msword
    // If you don't know, use application/octet-stream
    CkHttpResponse resp = http.PBinaryBd("POST",url,bd,"image/jpg",false,false);
    if (http.get_LastMethodSuccess() != true) {
        System.out.println(http.lastErrorText());
        return;
        }

    System.out.println("Response Status Code: " + resp.get_StatusCode());

    CkJsonObject jsonResponse = new CkJsonObject();
    jsonResponse.Load(resp.bodyStr());
    jsonResponse.put_EmitCompact(false);
    System.out.println(jsonResponse.emit());

    if (resp.get_StatusCode() != 200) {
        System.out.println("Failed.");

        return;
        }

    // A sample response:

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    // {
    //   "Id": "35333c64-4449-457b-bf6a-1b64d538e3c7",
    //   "Status": "OK",
    //   "ProviderName": "Chilkat2222",
    //   "DateTimeUTC": "\/Date(1587212597758)\/",
    //   "Attachments": [
    //     {
    //       "AttachmentID": "daf106e2-8634-4349-bfcc-86c1df0793b2",
    //       "FileName": "penguins.jpg",
    //       "Url": "https://api.xero.com/api.xro/2.0/Invoices/0032f627-3156-4d30-9b1c-4d3b994dc921/Attachments/penguins.jpg",
    //       "MimeType": "image/jpg",
    //       "ContentLength": 777835
    //     }
    //   ]
    // }
  }
}