WritableImage snapshot = scene.snapshot(null);

使用旧款FX,您可以使用AWT Robot.这不是一个很好的方法,因为它需要整个AWT堆栈才能启动.

// getting screen coordinates of a node (or whole scene)
            Bounds b = node.getBoundsInParent(); 
            int x = (int)Math.round(primaryStage.getX() + scene.getX() + b.getMinX());
            int y = (int)Math.round(primaryStage.getY() + scene.getY() + b.getMinY());
            int w = (int)Math.round(b.getWidth());
            int h = (int)Math.round(b.getHeight());
            // using ATW robot to get image
            java.awt.Robot robot = new java.awt.Robot();
            java.awt.image.BufferedImage bi = robot.createScreenCapture(new java.awt.Rectangle(x,y,w,h));
            // convert BufferedImage to javafx.scene.image.Image
            java.io.ByteArrayOutputStream stream = new java.io.ByteArrayOutputStream();
            // or you can write directly to file instead
            ImageIO.write(bi,"png",stream);
            Image image = new Image(new java.io.ByteArrayInputStream(stream.toByteArray()),h,true,true);