使用HSSFSheet将列格式types设置为date或时间

我想将我的列Mobile_Time设置为时间/date时间types列。 我努力了

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub DAO d0 = new DAO(); Map<String, String> AllUsermap = new HashMap<String, String>(); AllUsermap = d0.colleagueMap(Integer.parseInt(request.getParameter("lid")), request.getParameter("ltype")); String date = request.getParameter("date"); response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-Disposition", "attachment; filename=All Employees Tracking Report [Date]:" + date + ".xls"); Workbook workbook = new HSSFWorkbook(); Font font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); CellStyle HeaderStyle = workbook.createCellStyle(); HeaderStyle.setFont(font); for (String userK : AllUsermap.keySet()) { String userinfo[] = userK.split("-"); String userinfoval[] = AllUsermap.get(userK).split("-"); if (userinfo.length == 2 && userinfoval.length == 3) { Sheet sheet = workbook.createSheet(userinfoval[0]); // header Row row = sheet.createRow(0); Cell serial = row.createCell(0); serial.setCellValue("#"); serial.setCellStyle(HeaderStyle); serial = row.createCell(1); serial.setCellValue("LOCATION"); serial.setCellStyle(HeaderStyle); serial = row.createCell(2); serial.setCellValue("DISTANCE"); serial.setCellStyle(HeaderStyle); serial = row.createCell(3); serial.setCellValue("BATTERY"); serial.setCellStyle(HeaderStyle); serial = row.createCell(4); serial.setCellValue("SPEED"); serial.setCellStyle(HeaderStyle); serial = row.createCell(5); serial.setCellValue("GPS_ACCURACY"); serial.setCellStyle(HeaderStyle); serial = row.createCell(6); serial.setCellValue("STATUS"); serial.setCellStyle(HeaderStyle); serial = row.createCell(7); serial.setCellType(1); serial.setCellValue("MOBILE_TIME"); serial.setCellStyle(HeaderStyle); serial = row.createCell(8); serial.setCellValue("SPEED"); serial.setCellStyle(HeaderStyle); // End Header List<DailyReport> adr = new ArrayList<DailyReport>(); adr = d0.seletspecificdailyreport(Integer.parseInt(userinfo[0]), date, userinfo[1]); if (adr.size() > 0) { List<DailyReportDetails> adlrd = new ArrayList<DailyReportDetails>(); adlrd = d0.seletdailyreportdetails(adr.get(0).getIdDailyReport()); int i = 1; for (DailyReportDetails drd : adlrd) { row = sheet.createRow(i); Cell cell = row.createCell(0); cell.setCellValue(i); cell = row.createCell(1); cell.setCellValue(drd.getLocation()); cell = row.createCell(2); cell.setCellValue(drd.getDistance()); cell = row.createCell(3); cell.setCellValue(drd.getBattery()); cell = row.createCell(4); cell.setCellValue(drd.getSpeed()); cell = row.createCell(5); cell.setCellValue(drd.getAccuracy()); cell = row.createCell(6); cell.setCellValue(drd.getOffline() == 1 ? "ONLINE" : "OFFLINE"); cell = row.createCell(7); cell.setCellValue(drd.getMobiletime()); cell = row.createCell(8); cell.setCellValue(userinfoval[2]); i++; } } } } workbook.write(response.getOutputStream()); // Write workbook to // response. workbook.close(); } 

上面的servlets器正确地写xcel，但移动时间不是在xcel中的时间或date格式

我也试图把mobile_time列串行。

 serial = row.createCell(7); serial.setCellType(HSSFCell.LAST_COLUMN_NUMBER); serial.setCellValue("MOBILE_TIME"); serial.setCellStyle(HeaderStyle); 

并且还尝试了生成行的下面一行

 cell = row.createCell(7); try { cell.setCellValue(new SimpleDateFormat("HH:mm:ss").parse(drd.getMobiletime())); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } 

但仍然mobile_time列是字符格式。什么是适当的解决scheme？

Answer 1

你可以做这样的事情：

  Workbook wb = new HSSFWorkbook(); //Workbook wb = new XSSFWorkbook(); CreationHelper createHelper = wb.getCreationHelper(); Sheet sheet = wb.createSheet("new sheet"); // Create a row and put some cells in it. Rows are 0 based. Row row = sheet.createRow(0); // Create a cell and put a date value in it. The first cell is not styled // as a date. Cell cell = row.createCell(0); cell.setCellValue(new Date()); // we style the second cell as a date (and time). It is important to // create a new cell style from the workbook otherwise you can end up // modifying the built in style and effecting not only this cell but other cells. CellStyle cellStyle = wb.createCellStyle(); cellStyle.setDataFormat( createHelper.createDataFormat().getFormat("m/d/yy h:mm")); cell = row.createCell(1); cell.setCellValue(new Date()); cell.setCellStyle(cellStyle); //you can also set date as java.util.Calendar cell = row.createCell(2); cell.setCellValue(Calendar.getInstance()); cell.setCellStyle(cellStyle); // Write the output to a file FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close();