Lombok - java.lang.StackOverflowError: null on toString method

Question

I have two classes Product and Categorie. When I would like to modify the list of products in categorie with categoryRepository.save(c1) a

Answer 1

You are having a circular reference in the toString method generated by Lombok.

• Product is referencing Categorie on toString, which is referencing Product, and so on

You could use the exclude a property @ToString, but it is going to be deprecated soon, so use the @ToString.Exclude:

@Document
@Data @AllArgsConstructor @NoArgsConstructor @ToString
public class Product {
  ...

  @ToString.Exclude
  private Categorie categorie;

  ...
}

@Document
@Data @AllArgsConstructor @NoArgsConstructor @ToString
public class Categorie {
  ...

  @ToString.Exclude
  private Collection products=new ArrayList<>();

  ...
}

Lombok refs here and here