javafx图像与base64之间的相互转换

import javafx.embed.swing.SwingFXUtils;
import javafx.scene.image.Image;
import javax.imageio.ImageIO;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;

public class ImageUtils {
    public static String imageToBase64(String imagePath) throws IOException {
        File file = new File(imagePath);
        Image image = new Image(file.toURI().toString());
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        ImageIO.write(SwingFXUtils.fromFXImage(image, null), "png", outputStream);
        byte[] imageBytes = outputStream.toByteArray();
        return java.util.Base64.getEncoder().encodeToString(imageBytes);
    }

    public static void base64ToImage(String base64String, String outputPath) throws IOException {
        byte[] imageBytes = java.util.Base64.getDecoder().decode(base64String);
        Files.write(new File(outputPath).toPath(), imageBytes);
    }
}