java - 在浏览器中下载 Excel : Not able to prompt out save button

Question

我预计它会有一个提示屏幕，要求用户打开、保存或取消。

从我的代码下面，我尝试使用 FileOutputStream 将文件保存到特定位置，但是我该如何做像下面的屏幕截图这样的事情？

预期截图:

下面是我的代码:

try {
    /* Create Workbook and Worksheet XLSX Format */
    XSSFWorkbook my_workbook = new XSSFWorkbook();
    XSSFSheet my_sheet = my_workbook.createSheet("Cell Font");
    /* Get access to XSSFCellStyle */
    XSSFCellStyle my_style = my_workbook.createCellStyle();

    /* We will now specify a background cell color */
    my_style.setFillPattern(XSSFCellStyle.FINE_DOTS);
    my_style.setFillForegroundColor(IndexedColors.BLUE.getIndex());
    my_style.setFillBackgroundColor(IndexedColors.RED.getIndex());

    /* Create a row in the sheet */
    Row row = my_sheet.createRow(0);
    /* Create a cell */
    Cell cell = row.createCell(0);
    cell.setCellValue("Cell Fill Color Test");
    /* Attach the style to the cell */
    cell.setCellStyle(my_style);

    /* Write changes to the workbook */
    // OutputStream out = new FileOutputStream(
    // new File(ExcelConstant.TEST));
    // my_workbook.write(out);
    // out.close();

    OutputStream output = response.getOutputStream();
    // response.setContentType("application/x-download");
    // response.setHeader("Content-Disposition", "attachment; filename=MyExcel.xls");
    response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
    response.setHeader("Content-Disposition", "attachment; filename=Excel.xlsx");
    my_workbook.write(output);
    output.close();
}

Answer 1

我找到了自己问题的解决方案，即不允许 Ajax 下载文件。

Refer from buddy: Why threre is no way to download file using ajax request?

原因是我在 extjs 文件中调用了 ajax。海兹...