|| (!DateUtil.isCellDateFormatted(cell))
|| DateUtil.isADateFormat(style.getDataFormat(), style.getDataFormatString()))
cell.setCellStyle(style);
else{
CellStyle cstyle = sheet.getWorkbook().createCellStyle();
cstyle.cloneStyleFrom(style);
cstyle.setDataFormat(cell.getCellStyle().getDataFormat());
cell.setCellStyle(cstyle);
}
}