Java

Attach a File to a Multipart MIME Entity

Demonstrates the Chilkat Mime.AppendPartFromFile method, which reads a local file, creates an attachment part, and appends it. The only argument is the file path; the content headers are chosen from the filename extension.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the one-call way to add an attachment: Chilkat reads the file, infers its Content-Type from the extension, base64-encodes binary content, and appends it as a child part — typically inside a multipart/mixed. It is the building block behind adding attachments to an email, saving you from constructing the part and setting its headers by hand.

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Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Mime;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the Mime.AppendPartFromFile method, which reads a local file, creates an attachment
        // part, and appends it.  The only argument is the file path; the content headers are chosen from
        // the filename extension.

        Mime mime = new Mime();
        try {
            mime.newMultipartMixed();
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // A message body part.
        Mime bodyPart = new Mime();
        try {
            bodyPart.setBodyFromPlainText("Please see the attached files.");

            mime.appendPart(bodyPart);

            // Attach files directly.
            mime.appendPartFromFile("qa_data/report.pdf");

            mime.appendPartFromFile("qa_data/photo.jpg");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Number of parts: " + mime.getNumParts());
    }
}