JSF 2 + HIBERNATE 3 (JPA) + Spring 3 (Para controle de transação)
Pessoal… porque o Spring não esta injetando o EntityManager ?
web.xml (parte referente ao Spring)
...
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
...applicationContext.xml
...
<tx:annotation-driven/>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/fusionnet" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="fusionnet" />
<property name="dataSource" ref="dataSource"/>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="true" />
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
</bean>
</property>
</bean>
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
...persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="fusionnet" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
</persistence-unit>
</persistence>DAO
@Transactional
public class DAO<T> {
private final Class<T> classe;
private EntityManager em;
public DAO(Class<T> classe) {
this.classe = classe;
}
@PersistenceContext
public void setEm(EntityManager em) {
this.em = em;
}
public void add(T t) {
em.persist(t);
}
public void delete(T t) {
em.remove(em.merge(t));
}
public void update(T t) {
em.merge(t);
}
public List<T> listAll() {
CriteriaQuery<T> query = em.getCriteriaBuilder().createQuery(classe);
query.select(query.from(classe));
List<T> lista = em.createQuery(query).getResultList();
return lista;
}
public T listId(long id) {
T t = em.find(classe, id);
return t;
}
}Erro
java.lang.NullPointerException
br.com.fusionnet.dao.DAO.listAll(DAO.java:51)
br.com.fusionnet.mb.UfBean.getUfs(UfBean.java:31)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
javax.el.BeanELResolver.getValue(BeanELResolver.java:62)
javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:71)
org.apache.el.parser.AstValue.getValue(AstValue.java:123)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:106)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:190)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:178)
javax.faces.component.UISelectItems.getValue(UISelectItems.java:125)
com.sun.faces.renderkit.SelectItemsIterator.initializeItems(SelectItemsIterator.java:198)
com.sun.faces.renderkit.SelectItemsIterator.hasNext(SelectItemsIterator.java:131)
com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions(MenuRenderer.java:758)
com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect(MenuRenderer.java:840)
com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:294)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:879)
com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:308)
com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:181)
com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:125)
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:849)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1643)
javax.faces.render.Renderer.encodeChildren(Renderer.java:164)
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:849)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1643)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1646)
javax.faces.component.UIComponent.encodeAll(UIComponent.java:1646)
com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:389)
com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:127)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:117)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:135)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:309)