@Override
    public Integer convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty,
                                     GlobalConfiguration globalConfiguration) {
        return cellData.getNumberValue().intValue();
    }
Integer and number converter

@author Jiaju Zhuang
fastexcel-core/src/main/java/cn/idev/excel/converters/integer/IntegerNumberConverter.java