Erro! JPA!

19 de novembro de 2006 3 respostas

dsilva82PJ 19 de novembro de 2006

Pessoal, ja tentei de tudo e nao estou conseguindo resolver este erro, fiz o mapeamento do meu banco utilizando JPA(anotacoes), configurei o arquivo persistence.xml, o mesmo esta na pasta META-INF, o ID dele e SGPPU, mas ao executar o comando Persistence.createEntityManagerFactory(“SGPPU”); esta dando o seguinte erro:

Exception in thread “AWT-EventQueue-0” java.lang.NullPointerException

at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:120)

at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)

at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)

Alguem sabe o q pode ser?

3 Respostas

dsilva82PJ 19 de nov. de 2006

Pessoal segue meu codigo:

import javax.persistence.EntityManager;

import javax.persistence.EntityManagerFactory;

import javax.persistence.Persistence;

/**
*

@author Diego
*/
public class Main {

public static void main(String args[]) {

EntityManagerFactory factory = Persistence

.createEntityManagerFactory(“SGPPU”);

EntityManager em = factory.createEntityManager();

JfLogin formLogin = new JfLogin(em);

formLogin.setVisible(true);

}

}

dsilva82PJ 19 de nov. de 2006

Esse e meu persistence

<?xml version=“1.0” encoding=“UTF-8”?>

<persistence version=“1.0” xmlns=“<a href="http://java.sun.com/xml/ns/persistence">http://java.sun.com/xml/ns/persistence</a>” xmlns:xsi=“<a href="http://www.w3.org/2001/XMLSchema-instance">http://www.w3.org/2001/XMLSchema-instance</a>” xsi:schemaLocation=“<a href="http://java.sun.com/xml/ns/persistence">http://java.sun.com/xml/ns/persistence</a> <a href="http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd</a>”>

<persistence-unit name=“SGPPU” transaction-type=“RESOURCE_LOCAL”>

<provider>oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider</provider>

<class>sgp.model.Categoriacontas</class>

<class>sgp.model.Saldo</class>

<class>sgp.model.Contasreceber</class>

<class>sgp.model.Contatos</class>

<class>sgp.model.Compromissos</class>

<class>sgp.model.Nivelacesso</class>

<class>sgp.model.Usuarios</class>

<class>sgp.model.Transacoes</class>

<class>sgp.model.Endereco</class>

<class>sgp.model.Contaspagar</class>

<properties>

<property name=“toplink.jdbc.url” value=“jdbc:mysql://lptdie:3306/sgp”/>

<property name=“toplink.jdbc.user” value=“root”/>

<property name=“toplink.jdbc.driver” value=“com.mysql.jdbc.Driver”/>

<property name=“toplink.jdbc.password” value=“root”/>

</properties>

</persistence-unit>

</persistence>

dsilva82PJ 19 de nov. de 2006

Pessoal, achei mto estranho mas quando eu abri esse mesmo projeto no eclipse ele rodou beleza… acho que era pau do netbeans !!!
Abracos!

Criado 19 de novembro de 2006

Ultima resposta 19 de nov. de 2006

Respostas 3

Participantes 1

3 Respostas

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