private static Optional<String> validateCellValue(
            FieldMeta fieldMeta,
            Object value) {
        ExcelCellValidator cellValidator = fieldMeta.getCellValidator();
        if (cellValidator != null && !cellValidator.validate(value)) {
            return Optional.of(cellValidator.getInvalidTip());
        } else {
            return Optional.empty();
        }
    }
Validate the cell value of a given field in the Excel sheet

@param fieldMeta the meta information of the field to validate
@param value     the value of the field to validate
inlong-manager/manager-common/src/main/java/org/apache/inlong/manager/common/tool/excel/ExcelTool.java