应用POI向excel中插入图片

最近的一次工作中，需要向excel中插入图片。我们的要求是图片填满固定的区域，虽然图片有可能会拉伸或变形，但是，这么做在目前看来也是工作最好的了。下面是插入图片的代码：

            File image = null;
            byte[] bytes = IOUtils.toByteArray(new FileInputStream(image));
            int pictureIdx = template.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);
            
            CreationHelper helper = template.getCreationHelper();
            ClientAnchor anchor = helper.createClientAnchor();
            anchor.setCol1(2);
            anchor.setRow1(6);
            anchor.setCol2(2);
            anchor.setRow2(6 + 2);
            int LOGO_WIDTH_IN_FUNNY_POI_FORMAT = 160;
            int LOGO_HEIGHT_IN_FUNNY_POI_FORMAT = 1;
            anchor.setDx1(1 * XSSFShape.EMU_PER_PIXEL);
            anchor.setDy1(1 * XSSFShape.EMU_PER_PIXEL);
            anchor.setDx2(LOGO_WIDTH_IN_FUNNY_POI_FORMAT * XSSFShape.EMU_PER_PIXEL);
            anchor.setDy2(LOGO_HEIGHT_IN_FUNNY_POI_FORMAT * XSSFShape.EMU_PER_PIXEL);
            pict = drawing.createPicture(anchor, pictureIdx);

通过setCol1, setRow1, setCol2, setRow2设置图片所在的区域。我们定义图片的宽是LOGO_WIDTH_IN_FUNNY_POI_FORMAT。