POI 插入图片

public static void createPic() throws IOException {
		FileOutputStream fileOut = null;
		BufferedImage bufferImg = null;
		try {

			ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
			bufferImg = ImageIO.read(ReaderFileUtils.getFile("desktop3.jpg"));
			
			ImageIO.write(bufferImg, "jpg", byteArrayOut);

			HSSFWorkbook wb = new HSSFWorkbook();
			HSSFSheet sheet1 = wb.createSheet("pic");

			HSSFPatriarch patriarch = sheet1.createDrawingPatriarch();
			HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 512, 255,
					(short) 1, 1, (short) 10, 20);
			HSSFClientAnchor anchor1 = new HSSFClientAnchor(0, 0, 512, 255,
					(short) 2, 30, (short) 10, 60);
			anchor1.setAnchorType(2);
			patriarch
					.createPicture(anchor, wb.addPicture(
							byteArrayOut.toByteArray(),
							HSSFWorkbook.PICTURE_TYPE_JPEG));


			fileOut = new FileOutputStream("out.xls");
			wb.write(fileOut);
			fileOut.close();
		} catch (IOException io) {
			io.printStackTrace();
		} finally {
			if (fileOut != null) {
				try {
					fileOut.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}