java 如何将图片按照原尺寸比例存入word中

URL url = new URL(runText);
  byte[] bytes = IOUtils.toByteArray(url.openStream());
  ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
  BufferedImage img = javax.imageio.ImageIO.read(bis);
  int width = img.getWidth();
  int height = img.getHeight();
  //下面按照图片的实际大小进行同比例缩放
  int picHeight = 300;
  int picWidth = picHeight * width/height;
  //下次读取该ByteArrayInputStream 之前一定要调用reset进行复位，这样才能读到图片所有数据
  bis.reset();
  para.insertNewRun(i).addPicture(bis,
          XWPFDocument.PICTURE_TYPE_JPEG, url.getFile(), Units.toEMU(picWidth), Units.toEMU(picHeight));

XWPFRun run = paragraph.createRun();
InputStream is = getClass().getClassLoader().getResourceAsStream("images/abc.gif");
// 因为FileInputStream没有重写reset() 所有将流转为了byte数组
byte[] bs = IOUtils.toByteArray(is);
BufferedImage image = ImageIO.read(new ByteArrayInputStream(bs));
//int width = MyUnits.pxToEMU(image.getWidth());
//int height = MyUnits.pxToEMU(image.getHeight());
//EMU（英制公制单位）。1 EMU = 1/914400英寸= 1/36000 mm
run.addPicture(new ByteArrayInputStream(bs), Document.PICTURE_TYPE_GIF, "", 685800, 685800);