Java

Add an Attachment from a BinData Object

Demonstrates the Chilkat Email.AddAttachmentBd method, which adds an attachment using the contents of a BinData object. The first argument is the attachment filename, the second is the BinData, and the third is the content type — if empty, it is inferred from the filename extension. This example loads a PDF into a BinData and attaches it.

Background: BinData is Chilkat's container for raw binary data. Attaching from a BinData is the right approach when the file's bytes are already in memory — generated on the fly, downloaded, or read from a database — rather than sitting on disk (which would use AddFileAttachment). Chilkat Base64-encodes the bytes into the message automatically.

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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 AddAttachmentBd method, which adds an attachment using the contents of a
    //  BinData object.  The first argument is the attachment filename, the second is the BinData
    //  object, and the third is the content type (inferred from the filename extension if empty).

    CkEmail email = new CkEmail();
    email.put_Subject("Attach from BinData");
    email.put_Body("Please see the attached file.");

    //  Load a file into a BinData object, then attach it.
    CkBinData bd = new CkBinData();
    success = bd.LoadFile("qa_data/attachments/report.pdf");
    if (success == false) {
        System.out.println(bd.lastErrorText());
        return;
        }

    success = email.AddAttachmentBd("report.pdf",bd,"application/pdf");
    if (success == false) {
        System.out.println(email.lastErrorText());
        return;
        }

    System.out.println("NumAttachments = " + email.get_NumAttachments());

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