org.hibernate.AnnotationException: No identifier specified for entity - even when it was

I had the following

import org.springframework.data.annotation.Id;

Naturally, it should be:

import javax.persistence.Id;

Thanks to @JB Nizet

I faced the same error.I solved it and figured out i didn't put @Id annotations in id field in my Entity class.

@Entity
@Table(name="geonames")
public class Geoname implements Serializable {

    @Column(name="geonameid")
    private Long geonameid = null;
}