EntityNotFoundException in Hibernate Many To One mapping however data exist

I had the same problem, and

@NotFound(action = NotFoundAction.IGNORE)

solved my problem.

Not sure if that applies to your case.

But I had a similar issue where I updated directly in the database table X and set a field null, but in java class the field was @NotNull.

So when another class Y had a X object with ManyToOne, it wasn't able to load the entity because of the null value in the entity.

If you use @ManyToOne, the referenced entity must exist. The only other option is to specify that field as a long and retrieve the referenced entity by means of a separate query.

Throws an exception (javax.persistence.EntityNotFoundException) instead of returning null if it can't find the requested entity.

Use @NotFound annotation to resolve this exception if you are lazy loading and not handling this exception manually.

 @ManyToOne(
        fetch = FetchType.LAZY)
    @NotFound(
        action = NotFoundAction.IGNORE)
    @JoinColumn(
        name = COLUMN,
        referencedColumnName = COLUMN,
        insertable = false,
        updatable = false)
    private Table table;

The problem could be that the direct entity does not exist, but also it could be that the referenced entity from that entity, normally for a EAGER fetch type, or optional=false.

Try this:

     //bi-directional many-to-one association to User
     @ManyToOne(fetch=FetchType.LAZY)
     @JoinColumn(name="Users_id")
     private User user = new User();