Springmvc和poi3.9导出excel并弹出下载框

来源：互联网发布：datatype json 编辑：程序博客网时间：2024/05/16 11:23
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@RequestMapping(value = "/importexcel.htm", method = RequestMethod.GET)    public ModelAndView _importExcel(HttpServletRequest request, HttpServletResponse response, Integer cId) throws Exception {        // 获得要导出的数据集        List<Map<String, Object>> list = d_ExchangeCodeService.selectExcelRecord(cId);        // 创建excel工作簿        Workbook wb = new HSSFWorkbook();        // 创建第一个sheet（页），并命名        Sheet sheet = wb.createSheet(list.get(0).get("NAME").toString());        // 手动设置列宽。第一个参数表示要为第几列设；，第二个参数表示列的宽度，n为列高的像素数。        sheet.setColumnWidth((short) 0, (short) (35.7 * 150));        sheet.setColumnWidth((short) 1, (short) (35.7 * 150));        sheet.setColumnWidth((short) 2, (short) (35.7 * 150));        sheet.setColumnWidth((short) 3, (short) (35.7 * 100));        sheet.setColumnWidth((short) 4, (short) (35.7 * 250));        sheet.setColumnWidth((short) 5, (short) (35.7 * 150));        sheet.setColumnWidth((short) 6, (short) (35.7 * 150));        // 创建第一行        Row row = sheet.createRow((short) 0);        // 创建两种单元格格式        CellStyle cs = wb.createCellStyle();        CellStyle cs2 = wb.createCellStyle();        // DataFormat df = wb.createDataFormat();        // 创建两种字体        Font f = wb.createFont();        Font f2 = wb.createFont();        // 创建第一种字体样式        f.setFontHeightInPoints((short) 10);        f.setColor(IndexedColors.RED.getIndex());        f.setBoldweight(Font.BOLDWEIGHT_BOLD);        // 创建第二种字体样式        f2.setFontHeightInPoints((short) 10);        f2.setColor(IndexedColors.BLACK.getIndex());        f2.setBoldweight(Font.BOLDWEIGHT_BOLD);        // 设置第一种单元格的样式        cs.setFont(f);        cs.setBorderLeft(CellStyle.BORDER_THIN);        cs.setBorderRight(CellStyle.BORDER_THIN);        cs.setBorderTop(CellStyle.BORDER_THIN);        cs.setBorderBottom(CellStyle.BORDER_THIN);        // cs.setDataFormat(df.getFormat("#,##0.0"));        // 设置第二种单元格的样式        cs2.setFont(f2);        cs2.setBorderLeft(CellStyle.BORDER_THIN);        cs2.setBorderRight(CellStyle.BORDER_THIN);        cs2.setBorderTop(CellStyle.BORDER_THIN);        cs2.setBorderBottom(CellStyle.BORDER_THIN);        // cs2.setDataFormat(df.getFormat("text"));        // 创建列（每行里的单元格）        Cell cell = row.createCell(0);        cell.setCellValue("用户名");        cell.setCellStyle(cs);        cell = row.createCell(1);        cell.setCellValue("订单号");        cell.setCellStyle(cs);        cell = row.createCell(2);        cell.setCellValue("兑换券序列号");        cell.setCellStyle(cs);        cell = row.createCell(3);        cell.setCellValue("兑换券金额");        cell.setCellStyle(cs);        cell = row.createCell(4);        cell.setCellValue("兑换券类型名称");        cell.setCellStyle(cs);        cell = row.createCell(5);        cell.setCellValue("使用时间");        cell.setCellStyle(cs);        cell = row.createCell(6);        cell.setCellValue("使用结束日期");        cell.setCellStyle(cs);        DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");        for (short i = 0; i < list.size(); i++) {            // Row 行,Cell 方格 , Row 和 Cell 都是从0开始计数的            // 创建一行，在页sheet上            row = sheet.createRow((short) i + 1);            // 在row行上创建一个方格            cell = row.createCell(0);            cell.setCellValue(list.get(i).get("usr_UserID") == null ? "未使用" : list.get(i).get("usr_UserID").toString());            cell.setCellStyle(cs2);            cell = row.createCell(1);            cell.setCellValue(list.get(i).get("ord_OrderID") == null ? "未使用" : list.get(i).get("ord_OrderID").toString());            cell.setCellStyle(cs2);            cell = row.createCell(2);            cell.setCellValue(list.get(i).get("Account").toString());            cell.setCellStyle(cs2);            cell = row.createCell(3);            cell.setCellValue(Double.parseDouble(list.get(i).get("Amount").toString()));            cell.setCellStyle(cs2);            cell = row.createCell(4);            cell.setCellValue(list.get(i).get("NAME").toString());            cell.setCellStyle(cs2);            cell = row.createCell(5);            cell.setCellValue(list.get(i).get("UsedTime") == null ? "未使用" : df.format(list.get(i).get("UsedTime")).toString());            cell.setCellStyle(cs2);            cell = row.createCell(6);            cell.setCellValue(df.format(list.get(i).get("BlankOutTime")).toString());            cell.setCellStyle(cs2);        }        ByteArrayOutputStream os = new ByteArrayOutputStream();        try {            wb.write(os);        } catch (IOException e) {            e.printStackTrace();        }        byte[] content = os.toByteArray();        InputStream is = new ByteArrayInputStream(content);        // 设置response参数，可以打开下载页面        response.reset();        response.setContentType("application/vnd.ms-excel;charset=utf-8");        response.setHeader("Content-Disposition", "attachment;filename=" + new String((list.get(0).get("NAME").toString() + ".xls").getBytes(), "iso-8859-1"));        ServletOutputStream out = response.getOutputStream();        BufferedInputStream bis = null;        BufferedOutputStream bos = null;        try {            bis = new BufferedInputStream(is);            bos = new BufferedOutputStream(out);            byte[] buff = new byte[2048];            int bytesRead;            // Simple read/write loop.            while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {                bos.write(buff, 0, bytesRead);            }        } catch (final IOException e) {            throw e;        } finally {            if (bis != null)                bis.close();            if (bos != null)                bos.close();        }        return null;    }
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