Java

Set a MIME Body from Binary Bytes (BinData)

Demonstrates the Chilkat Mime.SetBodyBd method, which sets the decoded body bytes from a BinData, changes the transfer encoding to base64, and preserves the bytes exactly. The only argument is the BinData.

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 direct way to put arbitrary binary content into a part from memory — a generated image, a decrypted blob — without a temporary file. Chilkat base64-encodes it so the bytes survive text-based transports unchanged. Note it does not set a Content-Type or disposition, so assign those yourself to describe what the bytes are.

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

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the Mime.SetBodyBd method, which sets the decoded body bytes from a BinData,
        // changes the transfer encoding to base64, and preserves the bytes exactly.  The only argument is
        // the BinData.

        // Put the binary body bytes into a BinData.
        BinData bd = new BinData();
        try {
            bd.loadFile("qa_data/photo.jpg");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        Mime mime = new Mime();

        // Set a Content-Type for the binary content (SetBodyBd does not set one itself).
        mime.setContentType("image/jpeg");

        try {
            mime.setBodyBd(bd);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Body set from " + bd.getNumBytes() + " bytes.");
    }
}