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

I have the following configuration:

<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="jpaDataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>com.example.domain</value>
<value>com.example.repositories</value>
</list>
</property>
</bean>

I have my Geoname class in com.example.domain:

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

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

yet, when running, I get the following exception:

> Caused by: org.hibernate.AnnotationException: No identifier specified
> for entity: com.example.domain.Geoname at
> org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:277)
> at
> org.hibernate.cfg.InheritanceState.getElementsToProcess(InheritanceState.java:224)
> at
> org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:664)
> at
> org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.java:3449)
> at
> org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3403)
> at
> org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1330)
> at
> org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1730)

Any ideas why?

side note: I am combining both mongodb and hibernate/ mysql on this project.

try this


@Column(name="geonameid",unique=true,nullable=false)

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;
}