Java Excel

/**
 * Excel上传
 * */
@RequestMapping(value = "/xxx.do")
public void excelBatch(@RequestParam("file") MultipartFile file,
                       HttpServletResponse response, HttpServletRequest request)
        throws Exception {
    ByteArrayInputStream is = null;
    try {
        //读取流文件
        is = new ByteArrayInputStream(file.getBytes());
        // 打开文件
        Workbook book = Workbook.getWorkbook(is);
        // 得到第一个工作表对象
        Sheet sheet = book.getSheet(0);
        // 得到第一个工作表中的总行数
        int rowCount = sheet.getRows();
        Map<String, String> map = new HashMap<String, String>();
        if (rowCount > 1) {
            // 循环取出Excel中的内容
            for (int i = 1; i < rowCount; i++) {
                Cell[] cells = sheet.getRow(i);
                String col1 = cells[0].getContents();//数据1
                String col2 = cells[1].getContents();//数据2
                String col3 = cells[2].getContents();//数据3
                // 保存到数据库...
            }
            map.put("flag", "success");
            writerJson(response, map);
        }
    } catch (BiffException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        is.close();
    }
}