Avoid repetition of header columns while using opencsv

Question

I am using opencsv to append Java beans to a csv file. I'm using the following code :

public void functionOne(String pathToFile, List<Bookings> bookings){
    FileWriter writer  = new FileWriter(pathToFile, true);
    StatefulBeanToCsvBuilder<Bookings> builder=
                    new StatefulBeanToCsvBuilder(writer);

    StatefulBeanToCsv beanWriter = builder.build();
    beanWriter.write(bookings);
    writer.close();

}

This method will be called multiple times in my workflow ( hence I want the append flag to be true ). Things are getting appended to csv, however, for each call, the headers ( which are properties of the objects ) are getting repeated as well which is an issue. Any suggestions?

For reference, the csv looks like this :

property1    property2  property3
value1.1     value1.2   value1.3
property1    property2  property3
value2.1     value2.2   value2.3

Expected csv :

property1    property2  property3
value1.1     value1.2   value1.3
value2.1     value2.2   value2.3

You can try to create a Hashmap with property 1 as a key and value as a list. Something like this Map> map = new HashMap>(); — Tanvi Garg, May 28 '20 at 13:54
Does this help you ? https://stackoverflow.com/questions/56168094/why-opencsv-capitalizing-csv-headers-while-writing-to-file — Harmandeep Singh Kalsi, May 28 '20 at 13:55

Avoid repetition of header columns while using opencsv

0 Answers0