public static CellStyle createHeadCellStyle(Workbook workbook) {
		final CellStyle cellStyle = workbook.createCellStyle();
		setAlign(cellStyle, HorizontalAlignment.CENTER, VerticalAlignment.CENTER);
		setBorder(cellStyle, BorderStyle.THIN, IndexedColors.BLACK);
		setColor(cellStyle, IndexedColors.GREY_25_PERCENT, FillPatternType.SOLID_FOREGROUND);
		return cellStyle;
	}
public static CellStyle createHeadCellStyle ( Workbook workbook ) { final CellStyle cellStyle = workbook . createCellStyle ( ) ; setAlign ( cellStyle , HorizontalAlignment . CENTER , VerticalAlignment . CENTER ) ; setBorder ( cellStyle , BorderStyle . THIN , IndexedColors . BLACK ) ; setColor ( cellStyle , IndexedColors . GREY_25_PERCENT , FillPatternType . SOLID_FOREGROUND ) ; return cellStyle ; }
创建默认头部样式

@param workbook {@link Workbook} 工作簿
@return {@link CellStyle}