FileInputStream in = (FileInputStream) file.getInputStream();String csvPath = "";Class<?> clazz = FileInputStream.class;try {FileInputStream pc = in;// 创建一个实例Field[] fs = clazz.getDeclaredFields();for (int i = 0; i < fs.length; i++) {fs[i].setAccessible(true);// 将目标属性设置为可以访问System.out.println("赋值前：" + fs[i].getName() + ":" + fs[i].get(pc));if("path".equals(fs[i].getName())){csvPath = (String) fs[i].get(pc);}}} catch (Exception e1) {e1.printStackTrace();}String xlsPath = PoiCsvUtils.makeExcel(in,csvPath);//获取xls 文件路径InputStream xmlInputStream = new DataInputStream(new FileInputStream(xlsPath));