Hello:
I have a problem with a piece of software which uses Spring data-rest. When I try to access at the main URL of the program I get the next error message:
I think the problem is in the entity Film which is used by the repository RepositoryFilm but I can not see where is the problem.
The code of the entity is this:
And the code of RepositoryFilm is this:
I give you the configuration and the web initializer class, too:
Configuration class:
Web initializer:
I am rookie with Spring data-rest so I really need your help. Do you see where is the mistake?
Thank you in advance for you help
I have a problem with a piece of software which uses Spring data-rest. When I try to access at the main URL of the program I get the next error message:
Code:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'repositoryFilm': Cannot create inner bean '(inner bean)' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#1': Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public static javax.persistence.EntityManager org.springframework.orm.jpa.SharedEntityManagerCreator.createSharedEntityManager(javax.persistence.EntityManagerFactory)] threw exception; nested exception is java.lang.NullPointerExceptionThe code of the entity is this:
Code:
package org.springframework.data.rest.example;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table (name="peliculas")
public class Film implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column (name="idPeliculas")
private Long id;
@Column(name="Titulo")
private String titulo;
@Column(name="Duracion")
private Long duracion;
@Column(name="Tipo")
private String tipo;
@Column(name="Tipo")
private String Cartel;
@Column(name="Copias")
private Long Copias;
@Column(name="Directores_idDirectores")
private Long idDirectores;
public Film(){
super();
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getTitulo() {
return titulo;
}
public void setTitulo(String titulo) {
this.titulo = titulo;
}
public Long getDuracion() {
return duracion;
}
public void setDuracion(Long duracion) {
this.duracion = duracion;
}
public String getTipo() {
return tipo;
}
public void setTipo(String tipo) {
this.tipo = tipo;
}
public String getCartel() {
return Cartel;
}
public void setCartel(String cartel) {
Cartel = cartel;
}
public Long getCopias() {
return Copias;
}
public void setCopias(Long copias) {
Copias = copias;
}
public Long getIdDirectores() {
return idDirectores;
}
public void setIdDirectores(Long idDirectores) {
this.idDirectores = idDirectores;
}
}Code:
package org.springframework.data.rest.example;
import java.util.List;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.repository.query.Param;
import org.springframework.data.rest.repository.annotation.RestResource;
@RestResource(path="film")
public interface RepositoryFilm extends PagingAndSortingRepository<Film, Long> {
@RestResource(path="titulo")
public List<Film> findByTitulo(@Param("titulo") String titulo);
}Configuration class:
Code:
package org.springframework.data.rest.example;
import java.sql.Driver;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.jdbc.datasource.SimpleDriverDataSource;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
import org.springframework.orm.jpa.JpaDialect;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.vendor.HibernateJpaDialect;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Configuration
@ComponentScan(basePackageClasses = ApplicationConfig.class)
@EnableJpaRepositories
@EnableTransactionManagement
public class ApplicationConfig {
private static final Logger LOG = LoggerFactory.getLogger(ApplicationConfig.class);
@Bean public DataSource dataSource() {
// EmbeddedDatabaseBuilder builder = new EmbeddedDatabaseBuilder();
// return builder.setType(EmbeddedDatabaseType.HSQL).build();
LOG.debug("NNN Iniciamos la configuracion del data source");
final SimpleDriverDataSource ds = new SimpleDriverDataSource();
try {
LOG.debug("NNN Antes de dar de alta el data source");
ds.setDriverClass((Class<? extends Driver>) Class.forName("com.mysql.jdbc.Driver"));
LOG.debug("NNN Despues de dar de alta el data source");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ds.setUrl("jdbc:mysql://localhost/dbhaetoas");
ds.setUsername("root");
ds.setPassword("12qwerty");
return ds;
}
@Bean public EntityManagerFactory entityManagerFactory() {
LOG.debug("NNN Iniciamos la configuracion del EntityManagerFactory");
HibernateJpaVendorAdapter vendorAdapter = null;
LocalContainerEntityManagerFactoryBean factory = null;
try{
LOG.debug("NNN Antes de generar el vendorAdapter");
vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setDatabase(Database.MYSQL);
LOG.debug("NNN Despues de generar el vendorAdapter");
LOG.debug("NNN Generamos el factory");
factory = new LocalContainerEntityManagerFactoryBean();
LOG.debug("NNN Inicializamos el vendorAdapter del factory");
factory.setJpaVendorAdapter(vendorAdapter);
LOG.debug("NNN Configuramos el escaneo de paquetes");
factory.setPackagesToScan(getClass().getPackage().getName());
LOG.debug("NNN Inicializamos el data source");
factory.setDataSource(dataSource());
factory.afterPropertiesSet();
}catch (Exception e){
e.printStackTrace();
}
return factory.getObject();
}
@Bean public JpaDialect jpaDialect() {
LOG.debug("NNN Configuramos el dialecto de JPA");
return new HibernateJpaDialect();
}
@Bean public PlatformTransactionManager transactionManager() {
LOG.debug("NNN Configuramos el transaction manager");
JpaTransactionManager txManager = new JpaTransactionManager();
LOG.debug("NNN Configuramos el EntityManagerFactory del transaction manager");
txManager.setEntityManagerFactory(entityManagerFactory());
LOG.debug("NNN Devolvemos el transaction manager");
return txManager;
}
}Code:
package org.springframework.data.rest.example;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
import org.springframework.data.rest.webmvc.RepositoryRestExporterServlet;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
public class RestExporterWebInitializer implements WebApplicationInitializer {
@Override public void onStartup(ServletContext ctx) throws ServletException {
AnnotationConfigWebApplicationContext rootCtx = new AnnotationConfigWebApplicationContext();
rootCtx.register(ApplicationConfig.class);
ctx.addListener(new ContextLoaderListener(rootCtx));
RepositoryRestExporterServlet exporter = new RepositoryRestExporterServlet();
ServletRegistration.Dynamic reg = ctx.addServlet("rest-exporter", exporter);
reg.setLoadOnStartup(1);
reg.addMapping("/*");
}
}Thank you in advance for you help