poi 导出图片到excel并压缩图片

作为AI语言模型，我无法进行POI库的开发和使用，但是我可以提供Java代码的参考：

1. 导出图片到Excel

// 创建Excel文档
Workbook workbook = new XSSFWorkbook();
// 创建工作表
Sheet sheet = workbook.createSheet("图片示例");
// 加载图片
InputStream inputStream = new FileInputStream("image.jpg");
byte[] bytes = IOUtils.toByteArray(inputStream);
int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);
// 插入图片
CreationHelper helper = workbook.getCreationHelper();
Drawing drawing = sheet.createDrawingPatriarch();
ClientAnchor anchor = helper.createClientAnchor();
anchor.setCol1(0);
anchor.setRow1(0);
Picture picture = drawing.createPicture(anchor, pictureIdx);
// 输出Excel文件
FileOutputStream fos = new FileOutputStream("excel.xlsx");
workbook.write(fos);

2. 压缩图片

// 加载图片
InputStream inputStream = new FileInputStream("image.jpg");
byte[] bytes = IOUtils.toByteArray(inputStream);
// 压缩图片
BufferedImage bufferedImage = ImageIO.read(new ByteArrayInputStream(bytes));
int width = bufferedImage.getWidth();
int height = bufferedImage.getHeight();
double scale = 0.5;
width *= scale;
height *= scale;
BufferedImage compressedImage = new BufferedImage(width, height, bufferedImage.getType());
Graphics2D g = compressedImage.createGraphics();
g.drawImage(bufferedImage, 0, 0, width, height, null);
g.dispose();
// 输出压缩后的图片
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(compressedImage, "jpg", baos);
byte[] compressedBytes = baos.toByteArray();
FileOutputStream fos = new FileOutputStream("compressed.jpg");
fos.write(compressedBytes);

你可以将以上代码结合起来，先将图片压缩，再将压缩后的图片插入Excel中。