OpenCSV: How to create CSV file from POJO with custom column headers and custom column positions?

Question

I have created a MappingsBean class where all the columns of the CSV file are specified. Next I parse XML files and create a list of mappingbeans. Then I write that data int

Answer 1

If you dont have getDeclaredAnnotationsByType method, but need the name of your original field name:

beanField.getField().getName()

public class CustomMappingStrategy extends ColumnPositionMappingStrategy {
@Override
public String[] generateHeader() {
    final int numColumns = findMaxFieldIndex();
    if (!isAnnotationDriven() || numColumns == -1) {
        return super.generateHeader();
    }

    header = new String[numColumns + 1];

    BeanField beanField;
    for (int i = 0; i <= numColumns; i++) {
        beanField = findField(i);
        String columnHeaderName = extractHeaderName(beanField);
        header[i] = columnHeaderName;
    }
    return header;
}

private String extractHeaderName(final BeanField beanField) {
    if (beanField == null || beanField.getField() == null || beanField.getField().getDeclaredAnnotations().length == 0) {
        return StringUtils.EMPTY;
    }
    return beanField.getField().getName();
}

}