problème EntityManager NullpointerException
Bonjour,
Je travaille sur un projet Spring utilisant JPA, Lors de l'appel à une méthode de ma couche DAO, J'ai un NullPointerException sur l'entityManager alors que j'ai l'impression d'voir bien fait les injection de dépendance. Quelqu'un voit -il la faille? Merci.
Mon applicationContext.xml
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">
<context:annotation-config></context:annotation-config>
<context:component-scan base-package="com" />
<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/ma_bdd"></property>
<property name="username" value="root"></property>
<property name="password" value=""></property>
</bean>
<bean id="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="defaultDataSource" ref="datasource"></property>
<property name="persistenceXmlLocations">
<list>
<value>classpath*:persistence.xml</value>
</list>
</property>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitManager" ref="persistenceUnitManager"></property>
<property name="persistenceUnitName" value="UP_P"></property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"></property>
</bean>
<tx:annotation-driven />
</beans> |
L'implementation de mon DAO
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@Transactional
@Repository
public class SignUpDAOImpl implements ISignUpDAO {
@PersistenceContext( name = "UP_P" )
private EntityManager em;
public void setEntityManager( EntityManager entityManager ) {
this.em = entityManager;
}
@Override
@Transactional
public void register( User user ) {
em.persist( user );
}
@Override
public boolean connect( Long id_user ) {
User u = em.find( User.class, id_user );
if ( u != null ) {
return true;
} else {
return false;
}
}
@Override
public void delete( Long id_user ) {
User u = em.find( User.class, id_user );
em.remove( u );
}
@Override
public User update( User user ) {
em.merge( user );
return user;
}
} |
Ma class Test
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public class Test {
public static void main( String[] args ) {
ApplicationContext context = new ClassPathXmlApplicationContext(
"applicationContext.xml" );
ISignUpDAO d = new SignUpDAOImpl();
User u =new User( "bertrand", "thomas", "berth", "bertra@g.com", "blabla" );
d.register( u );
}
} |
Dans la console
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Exception in thread "main" java.lang.NullPointerException
at sap.ldee.dao.SignUpDAOImpl.register(SignUpDAOImpl.java:26)
at sap.ldee.test.Test.main(Test.java:60) |
