Java

Get Delivery-Status Info as JSON

Demonstrates the Chilkat Email.GetDsnInfo method, which — when IsMultipartReport indicates the email is a multipart/report — obtains the delivery-status information as a JsonObject. This example loads a bounce message, confirms it is a report, and prints the extracted DSN details as JSON.

Background: A bounce (DSN) carries its key facts — which recipient failed, the status code, the reporting server — in a machine-readable message/delivery-status part. Rather than parsing those raw fields yourself, GetDsnInfo gathers them into a structured JSON document you can query with the JsonObject API, making it easy to automate bounce handling and prune failed addresses from a mailing list.

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Java

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[])
  {
    boolean success = false;

    //  Demonstrates the GetDsnInfo method, which, for a multipart/report email, obtains the
    //  delivery-status information as a JSON object.

    CkEmail email = new CkEmail();

    success = email.LoadEml("qa_data/eml/dsn_bounce.eml");
    if (success == false) {
        System.out.println(email.lastErrorText());
        return;
        }

    //  Only meaningful for a multipart/report email.
    if (email.IsMultipartReport() == true) {
        CkJsonObject json = new CkJsonObject();
        success = email.GetDsnInfo(json);
        if (success == true) {
            System.out.println(json.emit());
            }

        }
    else {
        System.out.println("This email is not a multipart/report.");
        }

    //  Note: The path "qa_data/..." is a relative local filesystem path,
    //  relative to the current working directory of the running application.
  }
}