I have a problem with my program using Spring and Hibernate.
I have this classes:
departament.java
@Entity
@Table(name="apps_departaments")
public class Departament
{
@Id
@GeneratedValue
private int id;
@Column(name="dep_codi")
private String CodDep;
@Column(name="dep_nomc")
private String nom;
@Column(name="dep_nomm")
private String nomCurt;
}
departamentDAO.java
public interface DepartamentDAO
{
public void afegirDepartament(Departament dep);
public List<Departament> getDepartaments();
}
departamentDAOImpl.java
@Repository
public class DepartamentDAOImpl implements DepartamentDAO
{
@Autowired
private SessionFactory sessionFactory;
public void afegirDepartament(Departament dep)
{
sessionFactory.getCurrentSession().save(dep);
}
public List<Departament> getDepartaments()
{
return (List<Departament>)(sessionFactory.getCurrentSession().createCriteria(Departament.class).list());
}
}
departamentService.java
public interface DepartamentService
{
public void afegirDepartament(Departament dep);
public List<Departament> getDepartaments();
}
departamentServiceImpl.java
@Service
@Transactional(propagation = Propagation.SUPPORTS, readOnly = true)
public class DepartamentServiceImp implements DepartamentService
{
@Autowired
private DepartamentDAO depDAO;
@Transactional(propagation = Propagation.REQUIRED, readOnly = false)
@Override
public void afegirDepartament(Departament dep)
{
depDAO.afegirDepartament(dep);
}
@Override
public List<Departament> getDepartaments() {
return depDAO.getDepartaments();
}
}
My configuration settings are:
web-application-config.xml
<?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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="net.grupgirona.intranet" />
<context:annotation-config />
<context:property-placeholder location="classpath*:jdbc.properties"/>
<import resource="webmvc-config.xml" />
<import resource="webflow-config.xml" />
<import resource="data-access-config.xml" />
</beans>
data-access-config.xml
<?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:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.databaseurl}" p:username="${jdbc.username}"
p:password="${jdbc.password}" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configurationClass">
<value>org.hibernate.cfg.AnnotationConfiguration</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<property name="packagesToScan" value="net.grupgirona.dades"/>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
Ok, when i try to acces data that way:
DepartamentServiceImp dades = new DepartamentServiceImp();
I get a NullPointerException (dades is null when debugging).
When I read the hibernate output, it seems not be strange things, and the connection with the database brings up (hibernate has been created the table app_departaments correctly).
I don't know if I missing something in configuration, or what.
I will appeciate any help.
StackTrace
java.lang.NullPointerException at com.hpcds.grupgirona.dades.service.imp.DepartamentServiceImp.getDepartaments(DepartamentServiceImp.java:57) at com.hpcds.grupgirona.components.plantilla.LlistatDepartament.encodeEnd(LlistatDepartament.java:51) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1854) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1850) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:440) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:202) at org.springframework.faces.mvc.JsfView.renderMergedOutputModel(JsfView.java:85) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:574) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)