Excel导入

   @PostMapping("/import")
    public RespBean importData(MultipartFile file) throws IOException {
        //从上传的文件里解析出Position集合
        List<Position> list=POIUtils.parseFile(file);
        return RespBean.ok("ok");

    }

    public static List<Position> parseFile(MultipartFile file) {
        List<Position> list = new ArrayList<>();
        try {
            HSSFWorkbook workbook = new HSSFWorkbook(file.getInputStream());
            HSSFSheet sheet = workbook.getSheetAt(0);
            int rows = sheet.getPhysicalNumberOfRows();
            for (int i = 1; i < rows; i++) {
                HSSFRow r = sheet.getRow(i);
                double numericCellValue = r.getCell(0).getNumericCellValue();
                String name = r.getCell(1).getStringCellValue();
                Date createdate = r.getCell(2).getDateCellValue();
                boolean enabled = "是".equals(r.getCell(3).getStringCellValue());
                Position position = new Position();
                position.setEnabled(enabled);
                position.setCreatedate(createdate);
                position.setName(name);
                position.setId((int) numericCellValue);
                list.add(position);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println(list);
        return list;
    }