如何将OpenCV的Mat对象转换为JavaFX的WritableImage对象？

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.imageio.ImageIO;
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.MatOfByte;
import org.opencv.imgcodecs.Imgcodecs;
import javafx.embed.swing.SwingFXUtils;
import javafx.scene.image.WritableImage;
public class Mat2WritableImage {
   public static WritableImage Mat2WritableImage(Mat mat) throws IOException{
      //Encoding the image
      MatOfByte matOfByte = new MatOfByte();
      Imgcodecs.imencode(".jpg", mat, matOfByte);
      //Storing the encoded Mat in a byte array
      byte[] byteArray = matOfByte.toArray();
      //Preparing the Buffered Image
      InputStream in = new ByteArrayInputStream(byteArray);
      BufferedImage bufImage = ImageIO.read(in);
      System.out.println("Image Loaded");
      WritableImage writableImage = SwingFXUtils.toFXImage(bufImage, null);
      return writableImage;
   }
   public static void main(String args[]) throws Exception {
      //Loading the OpenCV core library
      System.loadLibrary( Core.NATIVE_LIBRARY_NAME );
      //Reading the Image from the file
      String file = "C:/EXAMPLES/OpenCV/sample.jpg";
      Mat image = Imgcodecs.imread(file);
      WritableImage obj = Mat2WritableImage(image);
      System.out.println(obj);
   }
}

Image Loaded
javafx.scene.image.WritableImage@142269f2