我在 Java 应用程序中遇到问题，无法下载 XLSX 文件。
按照此链接中显示的示例：使用 Apache POI 创建供用户下载的 excel 文件，我尝试了两种配置来下载/保存电子表格。
首先使用 .XLS 文件：
response.setContentType("application/ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=testxls.xls");
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet();
HSSFRow row = sheet.createRow(0);
HSSFCell cell = row.createCell(0);
cell.setCellValue("Some text");
ByteArrayOutputStream outByteStream = new ByteArrayOutputStream();
wb.write(outByteStream);
byte[] outArray = outByteStream.toByteArray();
OutputStream outStream = response.getOutputStream();
outStream.write(outArray);
outStream.flush();
这有效。
然后我尝试使用 XLSX 文件：
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setHeader("Content-Disposition", "attachment; filename=testxls.xlsx");
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet();
XSSFRow row = sheet.createRow(0);
XSSFCell cell = row.createCell(0); …