Error deserialize JSON value into type: class java.time.YearMonth

Question

Jakarta EE

@Entity(name = "Book")
@Table(name = "book")
public class Book {

    @Id
    @GeneratedValue
    private Long id;

    @NaturalId
    private String isbn;

    private String title;

    @Column(name = "published_on", columnDefinition = "date")
    @Convert(converter = YearMonthDateAttributeConverter.class)
    private YearMonth publishedOn;

    // Getters and setters omitted for brevity
}

I want to insert Year and Month only and I'm using JakartaEE Jsonb. Localdate is working fine but i have to insert the day too. I don't wont to use Jackson.

JEE JSON Binding

public class Book {

    public String isbn;
    public String title;
    public YearMonth publishedOn;

}

public static void main(String[] args) {

        // Create a book instance
        Book book = new Book();
        book.isbn = "123";
        book.title = "Advanced JPA and Hibernate";
        book.publishedOn = YearMonth.of(2022, 9);

        // Create Jsonb and serialize
        Jsonb jsonb = JsonbBuilder.create();
        var result = jsonb.toJson(book);
}

Answer 1

I found a solution to my answer by creating YearMonthTypeAdapter implementing the JsonAdapter<YearMonth, String> class, then overrode the below methods:

1. String adaptToJson(YearMonth date) return date.toString;
   

2. YearMonth adaptFromJson(String string) return YearMonth.parse(string);