0

here is my code.

@Entity 
public class Book {
@Id
@GeneratedValue
private String isbn;
private String title;
private Double price;
@ManyToMany
List <Author> authors= new ArrayList<>();

Please what is the cause of this error ?

Caused by: org.hibernate.PersistentObjectException: detached entity passed to persist: library.Book
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:124)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:780)
... 2 more
user1543915
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  • Possible duplicate of [JPA/Hibernate: detached entity passed to persist](https://stackoverflow.com/questions/13370221/jpa-hibernate-detached-entity-passed-to-persist) – Ian Aug 24 '18 at 00:48
  • @Ian Here is files of my project: https://www.dropbox.com/sh/8cuq8z6fh22sbhz/AAAFc1n7lgecqrrdsvfrtVrKa?dl=0 any help please ? i cant resolve the problem – user1543915 Aug 24 '18 at 11:06

0 Answers0