public static int getCellCoordinate(Integer currentCoordinate, Integer absoluteCoordinate,
        Integer relativeCoordinate) {
        if (absoluteCoordinate != null && absoluteCoordinate > 0) {
            return absoluteCoordinate;
        }
        if (relativeCoordinate != null) {
            return currentCoordinate + relativeCoordinate;
        }
        return currentCoordinate;
    }
Build  cell style

@param workbook
@param originCellStyle
@param writeCellStyle
@return
fastexcel-core/src/main/java/cn/idev/excel/util/StyleUtil.java