本文的專案框架為SSM框架
前端頁面需要點選觸發按鈕進入controller。

@RequestMapping("/telExport")
    public void exportFile(HttpServletResponse response,HttpServletRequest request, String searchvalue, String commuId,String parentId, String treename, String type, String starttime,String endtime, String tn) {
//上方帶入的是我所需要查詢內容的引數，可刪除編寫你自己需要的引數
//下方程式碼 可忽略
        Subject currentUser = SecurityUtils.getSubject
 
();
        String userid = currentUser.getSession().getAttribute("_USER_ID").toString();
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
        List<CloudRecord> clo = null;
        String value = null;
        if (StringUtils.isNotEmpty(searchvalue)) {
            try {
                value = URLDecoder.decode
 
(searchvalue, "UTF-8");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        }
        Date st = null;
        Date et = null;
        if (StringUtils.isNotEmpty(starttime)) {
            try {
                st = df.parse(starttime);
            } catch (ParseException e) {
                e.printStackTrace
 
();
            }
        }
        if (StringUtils.isNotEmpty(endtime)) {
            try {
                et = df.parse(endtime);
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        switch (type) {// 查詢需要匯出的內容
        case "2":
            String cityId = parentId.substring(0, 4) + "00";
            clo = cloudRecordService.selectCityTelList(cityId, userid, type,
                    value, st, et);
            break;
        case "3":
            clo = cloudRecordService.selectCityTelList(parentId, userid, type,
                    value, st, et);
            break;
        case "4":
            clo = cloudRecordService.selectCityTelList(treename, userid, type,
                    value, st, et);
            break;
        case "5":
            clo = cloudRecordService.selectCityTelList(commuId, userid, type,
                    value, st, et);
            break;
        }
    //直至此處上方程式碼可忽略，上方的程式碼主要是請求資料庫查詢需要匯出的內容，需更換為你自己的內容
    //下發為匯出功能不可缺少的步驟
        OutputStream os = null;
        XSSFWorkbook xWorkbook = null;
        try {
            os = response.getOutputStream();
            response.reset();
            response.setContentType("application/msexcel");

            response.setHeader("Content-disposition", "attachment; filename="
                    + tn + df.format(new Date()) + ".xlsx");
            response.setContentType("application/msexcel;charset=UTF-8");// 設定型別
            response.setHeader("Pragma", "No-cache");// 設定頭
            response.setHeader("Cache-Control", "no-cache");// 設定頭
            response.setDateHeader("Expires", 0);// 設定日期頭

            xWorkbook = new XSSFWorkbook();
            XSSFSheet xSheet = xWorkbook.createSheet("通話");

            // set Sheet頁頭部
            setSheetHeader(xWorkbook, xSheet);
            // set Sheet頁內容
            setSheetContent(xWorkbook, xSheet, clo);

            xWorkbook.write(os);

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (null != os) {
                try {
                    os.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            if (null != xWorkbook) {
                try {
                    xWorkbook.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private void setSheetHeader(XSSFWorkbook xWorkbook, XSSFSheet xSheet) {
        //有多少列要匯出 設定多少個
        xSheet.setColumnWidth(0, 20 * 256);
        xSheet.setColumnWidth(1, 20 * 256);
        xSheet.setColumnWidth(2, 20 * 256);
        xSheet.setColumnWidth(3, 20 * 256);
        xSheet.setColumnWidth(4, 20 * 256);
        xSheet.setColumnWidth(5, 20 * 256);
        xSheet.setColumnWidth(6, 20 * 256);


        CellStyle cs = xWorkbook.createCellStyle();
        // 設定水平垂直居中
        cs.setAlignment(CellStyle.ALIGN_CENTER);
        cs.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
        cs.setWrapText(true);// 是否自動換行
        XSSFRow xRow0 = xSheet.createRow(0);
        //下發程式碼為設定你需要匯出內容的名稱，內容自行填寫
        XSSFCell xCell0 = xRow0.createCell(0);
        xCell0.setCellStyle(cs);
        xCell0.setCellValue("區縣");

        XSSFCell xCell1 = xRow0.createCell(1);
        xCell1.setCellStyle(cs);
        xCell1.setCellValue("小區");

        XSSFCell xCell2 = xRow0.createCell(2);
        xCell2.setCellStyle(cs);
        xCell2.setCellValue("棟號");

        XSSFCell xCell3 = xRow0.createCell(3);
        xCell3.setCellStyle(cs);
        xCell3.setCellValue("單元號");

        XSSFCell xCell4 = xRow0.createCell(4);
        xCell4.setCellStyle(cs);
        xCell4.setCellValue("被叫電話號碼");

        XSSFCell xCell5 = xRow0.createCell(5);
        xCell5.setCellStyle(cs);
        xCell5.setCellValue("通話時長(-1被叫未接通,0主叫未接通,大於0：通話時長)");

        XSSFCell xCell6 = xRow0.createCell(6);
        xCell6.setCellStyle(cs);
        xCell6.setCellValue("接通時間");
    }

        private void setSheetContent(XSSFWorkbook xWorkbook, XSSFSheet xSheet,
            List<CloudRecord> clo) {

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        CellStyle cs = xWorkbook.createCellStyle();
        cs.setWrapText(true);

        if (null != clo && clo.size() > 0) {
            for (int i = 0; i < clo.size(); i++) {
                XSSFRow xRow = xSheet.createRow(i + 1);
                CloudRecord cloudRecord = clo.get(i);

                for (int j = 0; j < 8; j++) {
                    XSSFCell xCell = xRow.createCell(j);
                    xCell.setCellStyle(cs);
                    switch (j) {
                    //switch 為取得你要匯出的內容，注意case 後面的數字與上方你設定的標題名稱對於
                    case 0:
                        xCell.setCellValue(cloudRecord.getAreaName());
                        break;
                    case 1:
                        xCell.setCellValue(cloudRecord.getAddressName());
                        break;
                    case 2:
                        xCell.setCellValue(cloudRecord.getBuildingno());
                        break;
                    case 3:
                        xCell.setCellValue(cloudRecord.getUnit());
                        break;
                    case 4:
                        xCell.setCellValue(cloudRecord.getTelPhone());
                        break;
                    case 5:
                        xCell.setCellValue(cloudRecord.getTelduration());
                        break;
                    case 6:
                        if (cloudRecord.getTime() != null
                                && !cloudRecord.getTime().equals(""))
                            xCell.setCellValue(sdf.format(cloudRecord.getTime()));
                        break;
                    default:
                        break;
                    }
                }
            }

        }

    }

這樣一個完成的Excl表格匯出功能就結束了。