public void downloadExcel(List<RepairCatalogSearchResultsVO> rowDataList, String fileName) throws CROSException{

		ServletOutputStream servletOutputStream = null;

		FileOutputStream output = null;

		FileInputStream input = null;

		File exportFile = null;



		try {

			HSSFWorkbook workBook = new HSSFWorkbook();

			HSSFSheet sheet = workBook.createSheet("results");

			sheet.setDefaultColumnWidth((short)20);

			HSSFFont font1 = workBook.createFont();

			font1.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);



			/*HSSFCellStyle titleBold = workBook.createCellStyle();

			titleBold.setAlignment(HSSFCellStyle.ALIGN_CENTER);

			titleBold.setWrapText(true);

			titleBold.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);

			titleBold.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);

			HSSFFont font = workBook.createFont();

			font.setFontHeightInPoints((short) 12);

			font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

			titleBold.setFont(font);*/





			HSSFRow row = sheet.createRow((short) 0);

			row.createCell((short)0).setCellValue("ATA");

			//row.getCell((short)0).setCellStyle(titleBold);



			row.createCell((short)1).setCellValue("componentDesc");

			//row.getCell((short)1).setCellStyle(titleBold);

			



			Iterator<RepairCatalogSearchResultsVO> ite = rowDataList.iterator();

			int index = 1;

			while (ite.hasNext()) {

				RepairCatalogSearchResultsVO vo = ite.next();

				row = sheet.createRow(index);

				row.createCell((short)0);

				row.getCell((short)0).setCellValue(vo.getAtaNum());



				row.createCell((short)1);

				row.getCell((short)1).setCellValue(vo.getComponentDesc());



				index++;

			}



			String filePath = ((HttpServletRequest)FacesContext.getCurrentInstance().getExternalContext().getRequest()).getRealPath("/")

					+ "WEB-INF\\" + System.currentTimeMillis() + "_" + fileName;

			output = new FileOutputStream(filePath);

			workBook.write(output);

			output.flush();

			output.close();

			

			//下面写不写

			exportFile = new File(filePath);

			HttpServletResponse httpServletResponse = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();

			servletOutputStream = httpServletResponse.getOutputStream();

			httpServletResponse.setHeader("Content-disposition",

					"attachment; filename=" + fileName);

			httpServletResponse.setContentLength((int) exportFile.length());

			httpServletResponse.setContentType("application/x-download");

			httpServletResponse.setContentType("application/vnd.ms-excel");

			byte[] buffer = new byte[1024];

			int flag = 0;

			input = new FileInputStream(exportFile);

			while ((flag = input.read(buffer)) > 0) {

				servletOutputStream.write(buffer, 0, flag);

			}

			servletOutputStream.flush();

		} catch (FileNotFoundException notFoundException) {

		} catch (IOException ioException) {

		} catch (Exception exception)&n