CODEWITHSUNDEEP
javacsv
Jo Dung
Jo Dung

Reputation: 312

Generating CSV file from object in java

At this moment I am working on generating csv from object and I got stuck. I dont know how to generate csv for nested class. For example we have got following classes:

@Getter
@Setter
public class Person {
  private int age;
  private Name name;
}

@Getter
@Setter
public class Name {
  private String firstName;
  private String lastName;
}

There is huge problem for. Actually I tested few libraries like jackson and commons csv and I did not find solution. The main problem is that I dont know what fields are in object and have to prepare headers dynamically. Is there any simple way or library which allows for that operation? I would be thankfull for any tips.

Upvotes: 1

Views: 6916

Answers (2)

AJ Jwair
AJ Jwair

Reputation: 45

What is the purpose of creating the csv file? Is it necessary for you to preserve the nesting of classes? Are you re-constructing the objects from the csv files?

If you're only interested in the data of your objects, consider reducing everything down to the primitive types (or whatever class you have a meaningful toString() for), aka flattening your hierarchy. age, name ==> age, firstName, lastName

You can use reflection to dynamically get the hierarchy.

Does the output have to be a csv? Did you consider using a different format that preserves hierarchy like JSON or XML?

Upvotes: 0

Nakul Kumar
Nakul Kumar

Reputation: 170

You might have got the answer if googled it. It already has answer here : Object to CSV

Using super csv : Using super csv to write in csv from object

Upvotes: 1

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