java后台讀取excel模板數據

/**
     * 讀取EXCEL模板數據
     *
     * @param excelFilePath excel文件路徑
     * @param dataRowNum    開始讀取數據的行數
     * @param keyRowNum     數據字段所在行數
     * @return
     * @throws IOException
     */
    public static List<JSONObject> readExcelData(String excelFilePath, int dataRowNum, int keyRowNum)
            throws IOException {
        if (excelFilePath.endsWith(".xls"))
            version = version2003;
        else if (excelFilePath.endsWith(".xlsx"))
            version = version2007;
        InputStream stream = null;
        if (version == version2003) {
            stream = new FileInputStream(excelFilePath);
            wb = (Workbook) new HSSFWorkbook(stream);
            stream.close();
        } else if (version == version2007) {
            wb = (Workbook) new XSSFWorkbook(excelFilePath);
        }
        sheet = wb.getSheetAt(0);
        // 行數(從0開始,相當於最后一行的索引),列數
        int count_row = sheet.getLastRowNum();
        int count_cell = sheet.getRow(keyRowNum).getPhysicalNumberOfCells();
        List<JSONObject> list = FastList.newInstance();
        JSONObject count = new JSONObject();
        for (int i = 0; i < count_row; i++) {
            JSONObject map = new JSONObject();
            for (int j = 0; j < count_cell; j++) {
                row = sheet.getRow(i + dataRowNum);
                if (isRowEmpty(row)) {
                    continue;
                }
                if (null != row) {
                    cell = ((org.apache.poi.ss.usermodel.Row) row).getCell(j);
                    String k = "";
                    if (null != cell) {
                        int type = cell.getCellType(); // 得到單元格數據類型
                        switch (type) { // 判斷數據類型
                            case Cell.CELL_TYPE_BLANK:
                                k = "";
                                break;
                            case Cell.CELL_TYPE_BOOLEAN:
                                k = cell.getBooleanCellValue() + "";
                                break;
                            case Cell.CELL_TYPE_ERROR:
                                k = cell.getErrorCellValue() + "";
                                break;
                            case Cell.CELL_TYPE_FORMULA:
                                k = cell.getCellFormula();
                                break;
                            case Cell.CELL_TYPE_NUMERIC:
                                if (DateUtil.isCellDateFormatted(cell)) {
                                    k = new DataFormatter().formatRawCellContents(
                                            cell.getNumericCellValue(), 0, "yyyy-mm-dd hh:mm:ss");// 格式化日期yyyy-mm-dd hh:mm:ss
                                } else {
                                    k = keepTwoDecimal(cell.getNumericCellValue());
//                                    //k = cell.getNumericCellValue() + "";
//                                    // 將科學計數法類型轉換為字符串
//                                    /*Double double1 = new Double(k);
//                                    DecimalFormat decimalFormat = new DecimalFormat("###0");// 格式化設置
//                                    k = decimalFormat.format(double1);*/
//                                    //modify by zf 20191125 使用format方法解決手機號格式問題，獲取原始數據 
//                                    DecimalFormat df = new DecimalFormat("0");
//                                    k = df.format(cell.getNumericCellValue());
                                }
                                break;
                            case Cell.CELL_TYPE_STRING:
                                k = cell.getStringCellValue();
                                break;
                            default:
                                break;
                        }
                        map.put(((org.apache.poi.ss.usermodel.Row) sheet.getRow(keyRowNum)).getCell(j).getStringCellValue(), k);
                    }
                }
            }
            if (map != null && map.size() != 0) {
                list.add(map);
            }
        }
        cell = null;
        row = null;
        sheet = null;
        wb = null;

        return list;
    }