PersistenceException：没有名为Eclipselink_JPA的EntityManager的持久性提供程序

Question

我是JPA的新手，我对此相当迷茫。

我在netbeans中创建了一个企业项目来做一些测试。使用向导创建了此持久性单元。我为它添加了一个正常工作的JNDI连接,并且已经对它进行了测试：

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
  <persistence-unit name="persistencia" transaction-type="JTA">
    <jta-data-source>jdbc/nuevaConexion</jta-data-source>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="javax.persistence.schema-generation.database.action" value="create"/>
    </properties>
  </persistence-unit>
</persistence>

@Entity
public class Entity1 implements Serializable {

    private static long serialVersionUID = 1L;

    private String nombre;
    private int numero;
    /**
     * @return the serialVersionUID
     */
    public static long getSerialVersionUID() {
        return serialVersionUID;
    }

    /**
     * @param aSerialVersionUID the serialVersionUID to set
     */
    public static void setSerialVersionUID(long aSerialVersionUID) {
        serialVersionUID = aSerialVersionUID;
    }
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;

   // setters & getters

public class CreateEntity1 {

   public static void main( String[ ] args ) {

      EntityManagerFactory emfactory = Persistence.createEntityManagerFactory( "Eclipselink_JPA" );      
      EntityManager entitymanager = emfactory.createEntityManager( );
      entitymanager.getTransaction( ).begin( );

      Entity1 ent = new Entity1( ); 
      ent.setId(1);
      ent.setNombre("Mi entidad");
      ent.setNumero(123);

      entitymanager.persist( ent );
      entitymanager.getTransaction( ).commit( );
      entitymanager.close( );
      emfactory.close( );
   }
}

编辑2：将所有内容都改为Hibernate类型。仍然得到一个巨大的错误：

Answer 1

看看我的anwser,看看我的anwser,看看Spring Data JPA的最简单的工作示例。对我来说很简单。希望对你来说也一样简单。