如何打印特殊字符，如在Android上的蓝牙打印机？

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.util.Log;
import java.io.IOException;
import java.io.OutputStream;
import java.util.UUID;

public class BluetoothPrinter {

    private static final String TAG = "BluetoothPrinter";
    private static final UUID UUID_SERIAL_PORT_PROFILE = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");

    public static void printSpecialCharacters(Context context, String printerAddress, String specialCharacters) {
        BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        if (bluetoothAdapter == null) {
            Log.e(TAG, "Device doesn't support Bluetooth");
            return;
        }

        if (!bluetoothAdapter.isEnabled()) {
            Log.e(TAG, "Bluetooth is not enabled");
            return;
        }

        BluetoothDevice printerDevice = bluetoothAdapter.getRemoteDevice(printerAddress);
        BluetoothSocket socket = null;
        OutputStream outputStream = null;

        try {
            socket = printerDevice.createRfcommSocketToServiceRecord(UUID_SERIAL_PORT_PROFILE);
            socket.connect();

            outputStream = socket.getOutputStream();
            byte[] data = specialCharacters.getBytes();
            outputStream.write(data);
            outputStream.flush();

            Log.i(TAG, "Special characters printed successfully");
        } catch (IOException e) {
            Log.e(TAG, "Failed to print special characters", e);
        } finally {
            try {
                if (outputStream != null) {
                    outputStream.close();
                }
                if (socket != null) {
                    socket.close();
                }
            } catch (IOException e) {
                Log.e(TAG, "Failed to close socket", e);
            }
        }
    }
}