/**
     * 先判断删除,省得影响效率
     *
     * @param sheet
     * @param map
     * @throws Exception
     */
    private void deleteCell(Sheet sheet, Map<String, Object> map) throws Exception {
        Row  row   = null;
        Cell cell  = null;
        int  index = 0;
        while (index <= sheet.getLastRowNum()) {
            row = sheet.getRow(index++);
            if (row == null) {
                continue;
            }
            for (int i = row.getFirstCellNum(); i < row.getLastCellNum(); i++) {
                cell = row.getCell(i);
                if (row.getCell(i) != null && (cell.getCellType() == CellType.STRING
                        || cell.getCellType() == CellType.NUMERIC)) {
                    cell.setCellType(CellType.STRING);
                    String text = cell.getStringCellValue();
                    if (text.contains(IF_DELETE)) {
                      cell.setCellValue("");
                        if (Boolean.valueOf(
                                eval(text.substring(text.indexOf(START_STR) + 2, text.indexOf(END_STR))
                                        .trim(), map).toString())) {
                            PoiSheetUtil.deleteColumn(sheet, i);
                            i--;
                        }
                       
                    }
                }
            }
        }
    }