public static void createTransparentImage(String str, Font font, Color fontColor, ImageOutputStream out) throws IORuntimeException {
		writePng(createImage(str, font, null, fontColor, BufferedImage.TYPE_INT_ARGB), out);
	}
@Test
	@Disabled
	public void createTransparentImageTest() throws IORuntimeException, IOException {
		ImgUtil.createTransparentImage(
				"版权所有",
				new Font("黑体", Font.BOLD, 50),
				Color.BLACK,
				ImageIO.createImageOutputStream(new File("d:/test/createTransparentImageTest.png"))
		);
	}