使用例子 public class testJxl { public static void main(String[] args) throws Exception { OutputStream out = new FileOutputStream("./aaaa.xls"); // 寫入到 FileInputStream WritableWorkbook wwb= Workbook.createWorkbook(out); WritableSheet ws1=wwb.createSheet("test1", 0) ; // 得到工作薄中的第一個工作表 File fileImg = new File("./kkkk.bmp"); byte imageData[] = new byte[(int)fileImg.length()]; FileInputStream fis = new FileInputStream(fileImg); fis.read(imageData); // must be 24 bit true-colour,bmp file // * @param imageByte // * @param widthPixel // * @param heightPixel ws1.setWaterMarkImage(imageData,459,142); wwb.write(); wwb.close(); fis.close(); out.close(); } }