Java

Rename Email Attachments After Adding

Demonstrates how to rename email attachments after adding but before sending. 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;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkMailMan mailman = new CkMailMan();

    mailman.put_SmtpHost("smtp.my-mail-server.com");
    mailman.put_SmtpUsername("MY_SMTP_USERNAME");
    mailman.put_SmtpPassword("MY_SMTP_PASSWORD");
    mailman.put_SmtpSsl(true);
    mailman.put_SmtpPort(465);

    CkEmail email = new CkEmail();

    email.put_Subject("This is a test");
    email.put_Body("This is a test");
    email.put_From("Chilkat Support <support@chilkatsoft.com>");
    success = email.AddTo("Chilkat Admin","admin@chilkatsoft.com");
    //  To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

    //  Add some attachments.
    //  The AddFileAttachment method returns the value of the content-type it chose for the attachment.
    String contentType = email.addFileAttachment("qa_data/jpg/starfish.jpg");
    if (email.get_LastMethodSuccess() != true) {
        System.out.println(email.lastErrorText());
        return;
        }

    contentType = email.addFileAttachment("qa_data/pdf/fishing.pdf");
    if (email.get_LastMethodSuccess() != true) {
        System.out.println(email.lastErrorText());
        return;
        }

    //  If we save the email to a .eml, we can examine in a text editor.
    success = email.SaveEml("qa_output/e1.eml");
    if (success == false) {
        System.out.println(email.lastErrorText());
        System.out.println("Failed to save .eml");
        return;
        }

    //  We see the following in the e1.eml
    //  Notice that Chilkat replaced the full path with just the filename.
    //  The full local path is not part of the email that gets sent..

    //  ...
    //  --------------020807050607070004010609
    //  Content-Type: image/jpeg; name="starfish.jpg"
    //  Content-Transfer-Encoding: base64
    //  Content-Disposition: attachment; filename="starfish.jpg"
    //  
    //  ...
    //  --------------020807050607070004010609
    //  Content-Type: application/pdf; name="fishing.pdf"
    //  Content-Transfer-Encoding: base64
    //  Content-Disposition: attachment; filename="fishing.pdf"
    //  ...

    //  Before sending, each filename can be changed within the email object.
    //  For example:
    success = email.SetAttachmentFilename(0,"orange_starfish.jpg");
    success = email.SetAttachmentFilename(1,"tuna_fishing.pdf");

    //  Look at the new MIME source of the email in a  text editor...
    success = email.SaveEml("qa_output/e2.eml");
    if (success == false) {
        System.out.println(email.lastErrorText());
        System.out.println("Failed to save .eml");
        return;
        }

    //  You'll see this:

    //  ...
    //  --------------020807050607070004010609
    //  Content-Type: image/jpeg; name="orange_starfish.jpg"
    //  Content-Transfer-Encoding: base64
    //  Content-Disposition: attachment; filename="orange_starfish.jpg"
    //  
    //  ...
    //  --------------020807050607070004010609
    //  Content-Type: application/pdf; name="tuna_fishing.pdf"
    //  Content-Transfer-Encoding: base64
    //  Content-Disposition: attachment; filename="tuna_fishing.pdf"
    //  ...

    //  Send the email with the updated filenames..
    success = mailman.SendEmail(email);
    if (success != true) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    success = mailman.CloseSmtpConnection();
    if (success != true) {
        System.out.println("Connection to SMTP server not closed cleanly.");
        }

    System.out.println("Mail with attachments sent!");
  }
}