java – Hibernate – OGM [PersistenceUnit：person]无法构建Hi
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我收到以下错误
Utilty.java 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();
}
}
持久的阶级 @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;
}
}
主要班级 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>
解决方法
根异常说明了一切：
Caused by: org.hibernate.HibernateException: Unanticipated return type [java.lang.Long] for UUID 您正在一个它不支持的类型上使用UUID id生成器.在这种情况下,您应该使用String而不是Long. （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |