public void addPictrue(String imgPath,HSSFSheet sheet, HSSFWorkbook wb){BufferedImage bufferImg = null;     //先把读进来的图片放到一个ByteArrayOutputStream中，以便产生ByteArray    try {  ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();bufferImg = ImageIO.read(new File(imgPath));     //这里要注意，第二个参数将会决定插入图片形式，如果是一个png的图片，背景透明，但是此处设置为jpg格式将会自动添加黑色背景ImageIO.write(bufferImg, "png", byteArrayOut);            //画图的顶级管理器，一个sheet只能获取一个HSSFPatriarch patriarch = sheet.createDrawingPatriarch();     //anchor主要用于设置图片的属性  HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 255, 255,(short) 9, 0, (short) 11, 0);     anchor.setAnchorType(2);     //插入图片    patriarch.createPicture(anchor, wb.addPicture(byteArrayOut.toByteArray(), HSSFWorkbook.PICTURE_TYPE_PNG));   } catch (Exception e) {  e.printStackTrace();  }finally{  }  }public void addPictrue2(String imgPath,HSSFWorkbook wb,HSSFSheet sheet){InputStream is;byte[] bytes;try {is = new FileInputStream(imgPath);bytes = IOUtils.toByteArray(is);int pictureIdx = wb.addPicture(bytes, wb.PICTURE_TYPE_PNG);  CreationHelper helper = wb.getCreationHelper();  Drawing drawing = sheet.createDrawingPatriarch();  ClientAnchor anchor = helper.createClientAnchor();  // 图片插入坐标  anchor.setCol1(9);  anchor.setRow1(0);anchor.setCol2(11);anchor.setRow2(0);// 插入图片  Picture pict = drawing.createPicture(anchor, pictureIdx);  pict.resize();  } catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}   }

之前经不同地方都很难找到方法，在此做记录，以便以后方便使用！