Java

Get an Attachment's Bytes into a BinData

Demonstrates the Chilkat Email.GetAttachmentBd method, which copies an attachment's binary data into a BinData object. The first attachment is at index 0. This example adds an attachment and copies its bytes into a BinData, printing the byte count.

Background: This is the safe, binary way to extract an attachment — the counterpart to the text-oriented GetAttachmentString. Because attachments are often binary (PDFs, images, archives), copying the raw bytes into a BinData preserves them exactly, ready to write to a file, hash, or pass to another API without any charset conversion that could corrupt the data.

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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 GetAttachmentBd method, which copies an attachment's binary data into a
    //  BinData object.  The first attachment is at index 0.

    CkEmail email = new CkEmail();
    email.put_Subject("GetAttachmentBd example");

    email.AddStringAttachment("notes.txt","Some notes stored in the attachment.");

    //  Copy the first attachment's binary data into a BinData object.
    CkBinData bd = new CkBinData();
    success = email.GetAttachmentBd(0,bd);
    if (success == false) {
        System.out.println(email.lastErrorText());
        return;
        }

    System.out.println("Attachment size (bytes) = " + bd.get_NumBytes());
  }
}