Question

private void writeData(HSSFSheet sheet) {
        for (int i = 0; i < boltData.size(); i++) {
            HSSFRow row = sheet.createRow(rowCount);
            rowCount++;
            BoltDto boltDto = boltData.get(i);
            for (int j = 0; j < **${noOfattributesInMyEntity}**; j++) {
                HSSFCell cell = row.createCell(j);
                cell.setCellValue(new HSSFRichTextString(
                        (**boltDto.getXyz()**).trim()));
            }
        }
    }

I want something like above.

I am creating an excel sheet where in the number of rows corresponds to the number of objects in the List. and the number of columns corresponds to the number of attributes/properties in the DTO.

As my DTO has over 40 attributes, I don’t want to write explicitly. Is there any work around?

Answer 1

You can use reflection or (better) the commons-beanutils API (or anything providing similar functionality). The simplest usage would look like this:

for (Object property : BeanUtils.describe(yourDto).keySet()) {
    Object value = BeanUtils.getProperty(yourDto, property.toString());
    // do whatever with the property value
}