触发场景描述

easyexcel导出xls正常导出xlsx提示

触发Bug的代码

easyexcel导出xls的代码：
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		
		resp.setContentType("application/vnd.ms-excel");
		resp.setHeader("Content-disposition", "attachment;filename*=utf-8''cc2024.xls");

		ExcelWriter writer = EasyExcelFactory.write(resp.getOutputStream()).excelType(ExcelTypeEnum.XLS).build();
	    WriteSheet sheet1 = new WriteSheet();
        sheet1.setSheetName("测试");
        sheet1.setSheetNo(0);
        WriteTable table = new WriteTable();
        table.setTableNo(1);
        List<List<String>> headTitles = ListUtils.newArrayList();
		headTitles.add(ListUtils.newArrayList("日期"));
		
        table.setHead(headTitles);
        writer.write(contentData(), sheet1, table);
        writer.finish();
	}
	
	private static List<List<Object>> contentData() {
        List<List<Object>> contentList = new ArrayList<List<Object>>();
        contentList.add(ListUtils.newArrayList("0801"));
        contentList.add(ListUtils.newArrayList("0802"));
        return contentList;
    }
  easyexcel导出xlsx的代码：
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		
		resp.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
		resp.setHeader("Content-disposition", "attachment;filename*=utf-8''cc2024.xlsx");

		ExcelWriter writer = EasyExcelFactory.write(resp.getOutputStream()).excelType(ExcelTypeEnum.XLSX).build();
	    WriteSheet sheet1 = new WriteSheet();
        sheet1.setSheetName("测试");
        sheet1.setSheetNo(0);

        WriteTable table = new WriteTable();
        table.setTableNo(1);
        List<List<String>> headTitles = ListUtils.newArrayList();
		headTitles.add(ListUtils.newArrayList("日期"));
		
        table.setHead(headTitles);
        writer.write(contentData(), sheet1, table);
        writer.finish();
	}
	
	private static List<List<Object>> contentData() {
        List<List<Object>> contentList = new ArrayList<List<Object>>();
        contentList.add(ListUtils.newArrayList("0801"));
        contentList.add(ListUtils.newArrayList("0802"));
        return contentList;
    }

提示的异常或者没有达到的效果

easyexcel导出xls正常打开：

easyexcel导出xlsx报错提示：
Excel 无法打开文件"cc2024(10).xsx”，因为文件格式或文件扩展名无效。请确定文件未损坏，并且文件扩展名与文件的格式匹配,