Hibernate-OGM[PersistenceUnit:person]无法构建Hibernate SessionFactory

Question

我得到以下错误

public class Utility {
    private static EntityManagerFactory entityManagerFactory;

    //@BeforeClass
    public static EntityManagerFactory setUpEntityManagerFactory() {
        entityManagerFactory = Persistence.createEntityManagerFactory( "person" );
        return entityManagerFactory;
    }

    //@AfterClass
    public static void closeEntityManagerFactory() {
        entityManagerFactory.close();
    }
}

@Entity
public class Person {

        @Id
        @GeneratedValue(generator = "uuid")
        @GenericGenerator(name = "uuid", strategy = "uuid2")
        private long id;

        private String firstName;
        private String lastName;

        public long getId() {
            return id;
        }
        public void setId(long id) {
            this.id = id;
        }
        public String getFirstName() {
            return firstName;
        }
        public void setFirstName(String firstName) {
            this.firstName = firstName;
        }
        public String getLastName() {
            return lastName;
        }
        public void setLastName(String lastName) {
            this.lastName = lastName;
        }

        public Person(){

        }

        public Person(String firstName, String lastName) {
            this.firstName = firstName;
            this.lastName = lastName;
        }    
}

public class PersonWorker {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        EntityManagerFactory emf = Utility.setUpEntityManagerFactory();

        EntityManager em = emf.createEntityManager();

        em.getTransaction().begin();

            // create a Person
        Person bob = new Person( "Bob", "McRobb" );

        em.persist( bob );
        em.getTransaction().commit();
        em.close();
        emf.close();

    }

}

persistance.xml

<?xml version="1.0"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
             version="2.0">

    <persistence-unit name="person" transaction-type="JTA">
        <provider>org.hibernate.ogm.jpa.HibernateOgmPersistence</provider>
       <class>com.ihappyk.model.Person</class>
        <properties>
            <property name="hibernate.ogm.datastore.provider" value="mongodb" />
            <property name="hibernate.ogm.datastore.database" value="hibernateOGM" />
            <property name="hibernate.ogm.datastore.host" value="127.0.0.1" />
            <property name="hibernate.ogm.datastore.port" value="27017" />
            <property name="hibernate.ogm.datastore.provider" value="org.hibernate.ogm.datastore.mongodb.impl.MongoDBDatastoreProvider"/>

            <property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.JBossStandAloneJtaPlatform"/>
        </properties>
    </persistence-unit>
</persistence>

Answer 1

根异常说明了一切：

Caused by: org.hibernate.HibernateException: Unanticipated return type [java.lang.Long] for UUID

您正在对它不支持的类型使用UUID id生成器。在本例中，应该使用string而不是long。