Error: The given id must not be null for GeneratedValue in JPA
37,960
It was my bad, I was calling foo(user.getId())
before saving the User
object into the database.
Takeaways from this: @GeneratedValue(strategy=GenerationType.IDENTITY)
is the correct code and generates identical ids while saving to database1. And Long
is not a problem. Thanks.
[1]: I am saving the object into the database by, something like: userRepository.save(user)
.
Author by
Anil Bhaskar
I am a Computer Science enthusiast. SOreadytohelp
Updated on November 30, 2021Comments
-
Anil Bhaskar over 2 years
My object:
@Entity @Table(name="user") public class User { @Id @Column(name="uid") @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id; //more code }
When I
POST
user
JSON
withoutuid
, I am getting error as the given id must not be null. Which should not be the case whileuid
should be generated by the database. Please point what am I missing.JSON:
{ "email": "[email protected]", "name": "John Doe", "phone": "98-765-4445" }
Error:
{ "timestamp": 1501058952038, "status": 500, "error": "Internal Server Error", "exception": "org.springframework.dao.InvalidDataAccessApiUsageException", "message": "The given id must not be null!; nested exception is java.lang.IllegalArgumentException: The given id must not be null!", "path": "/api/user/" }