我的目标是创建一个Excel文件供用户通过Apache poi下载。
我的servlet中有这段代码:
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
// create a workbook , worksheet
Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet("MySheet");
CreationHelper createHelper = wb.getCreationHelper();
// Create a row and put some cells in it. Rows are 0 based.
Row row = sheet.createRow((short)0);
Cell cell = row.createCell(0);
cell.setCellValue(1);
row.createCell(1).setCellValue(1.2);
row.createCell(2).setCellValue( createHelper.createRichTextString("This is a string") );
row.createCell(3).setCellValue(true);
//write workbook to outputstream
ServletOutputStream out = response.getOutputStream();
wb.write(out);
out.flush();
out.close();
//offer the user the option of opening or downloading the resulting Excel file
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=MyExcel.xls");
问题是我得到了这些奇怪的值:
'......MySheetŒ®üÿ » ÌÁ w dü©ñÒMbP?*+'€%ÿÁƒ"¡"d,,à?à?
有什么建议吗?
发现了问题所在。 必须先设置 HttpServletResponse ,然后再进行任何其他操作
//offer the user the option of opening or downloading the resulting Excel file
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=MyExcel.xls");
您需要为每个单元格设置单元格类型,您可以使用:
cell.setCellType(Cell.CELL_TYPE_STRING );
在此处查看 api 以获取更多单元格类型。
或者,您也可以使用 DataFormatter。