Transaction management with Spring Batch

I am discovering actually Spring and I am able to setup some jobs. Now, I would like to save my imported datas in a database using Hibernate/JPA and I keep getting this error :

14:46:43.500 [main] ERROR o.s.b.core.step.AbstractStep   - Encountered an error executing the step javax.persistence.TransactionRequiredException: no transaction is in progress

I see that the problem is with the transaction. Here is my spring java config for the entityManager and the transactionManager :

 @Configuration
public class PersistenceSpringConfig implements EnvironmentAware
{


    @Bean
  public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws Exception
  {
    // Initializes the entity manager
    LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
    factoryBean.setPersistenceUnitName(PERSISTENCE_UNIT_NAME);
    factoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
    factoryBean.setDataSource(dataSource());

    // Scans the database model
    factoryBean.setPackagesToScan(EntiteJuridiqueJPA.class.getPackage().getName());

    // Defines the Hibernate properties
    Properties jpaProperties = new Properties();
    jpaProperties.setProperty("hibernate.show_sql", "false");
    jpaProperties.setProperty("hibernate.format_sql", "false");
    String connectionURL = "jdbc:h2:file:" + getDatabaseLocation();
    jpaProperties.setProperty("hibernate.connection.url", connectionURL);
    jpaProperties.setProperty("hibernate.connection.username", "sa");
    jpaProperties.setProperty("hibernate.connection.driver_class", "org.h2.Driver");
    jpaProperties.setProperty("hibernate.dialect", H2Dialect.class.getName());
    jpaProperties.setProperty("hibernate.hbm2ddl.auto", "create");
    jpaProperties.setProperty("hibernate.hbm2ddl.import_files_sql_extractor", "org.hibernate.tool.hbm2ddl.MultipleLinesSqlCommandExtractor");
    jpaProperties.setProperty("hibernate.hbm2ddl.import_files",
        "org/springframework/batch/core/schema-drop-h2.sql,org/springframework/batch/core/schema-h2.sql");

    factoryBean.setJpaProperties(jpaProperties);
    return factoryBean;
  }



 @Bean
  public PlatformTransactionManager transactionManager2() throws Exception
  {
    EntityManagerFactory object = entityManagerFactory().getObject();
    JpaTransactionManager jpaTransactionManager = new JpaTransactionManager(object);
    return jpaTransactionManager;
  }

I am using the JpaItemWriter to store the datas in the database :

 @Bean
  public ItemWriter<EntiteJuridiqueJPA> writer()
  {
    JpaItemWriter<EntiteJuridiqueJPA> writer = new JpaItemWriter<EntiteJuridiqueJPA>();    
    writer.setEntityManagerFactory(entityManagerFactory.getObject());
    return writer;
  }

This is the code that causes the exception : javax.persistence.TransactionRequiredException: no transaction is in progress

Any idea to how to solve this problem?

[Edit] I am putting also the Job definition and the step definition. All my Spring configuration is written in Java.

 @Configuration
@EnableBatchProcessing
@Import(PersistenceSpringConfig.class)
public class BatchSpringConfig
{
  @Autowired
  private JobBuilderFactory  jobBuilders;

  @Autowired
  private StepBuilderFactory stepBuilders;

  @Autowired
  private DataSource         dataSource;

  @Autowired
  private LocalContainerEntityManagerFactoryBean entityManagerFactory;

  @Bean
  public Step step()
  {
    return stepBuilders.get("step").<EntiteJuridique, EntiteJuridiqueJPA> chunk(5).reader(cvsReader(null))
        .processor(processor()).writer(writer()).listener(processListener()).build();
  }

  @Bean
  @StepScope
  public FlatFileItemReader<EntiteJuridique> cvsReader(@Value("#{jobParameters[input]}") String input)
  {
    FlatFileItemReader<EntiteJuridique> flatFileReader = new FlatFileItemReader<EntiteJuridique>();
    flatFileReader.setLineMapper(lineMapper());
    flatFileReader.setResource(new ClassPathResource(input));
    return flatFileReader;
  }

  @Bean
  public LineMapper<EntiteJuridique> lineMapper()
  {
    DefaultLineMapper<EntiteJuridique> lineMapper = new DefaultLineMapper<EntiteJuridique>();
    DelimitedLineTokenizer lineTokenizer = new DelimitedLineTokenizer();
    lineTokenizer.setDelimiter(";");
    lineTokenizer.setNames(new String[] { "MEGA_ENTITE", "PORTEFEUILLE", "MEGA_ENTITE", "Libellé" });

    BeanWrapperFieldSetMapper<EntiteJuridique> fieldSetMapper = new BeanWrapperFieldSetMapper<EntiteJuridique>();
    fieldSetMapper.setTargetType(EntiteJuridique.class);

    lineMapper.setLineTokenizer(lineTokenizer);
    lineMapper.setFieldSetMapper(fieldSetMapper);

    return lineMapper;
  }

  @Bean
  public Job dataInitializer()
  {
    return jobBuilders.get("dataInitializer").listener(protocolListener()).start(step()).build();
  }

  @Bean
  public ItemProcessor<EntiteJuridique, EntiteJuridiqueJPA> processor()
  {
    return new EntiteJuridiqueProcessor();
  }

  @Bean
  public ItemWriter<EntiteJuridiqueJPA> writer()
  {
    JpaItemWriter<EntiteJuridiqueJPA> writer = new JpaItemWriter<EntiteJuridiqueJPA>();    
    writer.setEntityManagerFactory(entityManagerFactory.getObject());
    return writer;
    // return new EntiteJuridiqueWriter();
  }

  @Bean
  public ProtocolListener protocolListener()
  {
    return new ProtocolListener();
  }

  @Bean
  public CSVProcessListener processListener()
  {
    return new CSVProcessListener();
  }

  @Bean
  public PlatformTransactionManager transactionManager2() throws Exception
  {
    EntityManagerFactory object = entityManagerFactory.getObject();
    JpaTransactionManager jpaTransactionManager = new JpaTransactionManager(object);
    return jpaTransactionManager;
  }

[EDIT] I am still stuck with this problem. I have followed the suggestions of @Sean Patrick Floyd and @bellabax by setting a transaction manager for the stepBuilders, but I still get the same exception. I have tested my entityManager independtly of spring-batch and I am able to store any data in the database.

But, when using the same entity manager with spring batch, I have this exception.

Anyone can give more insights how transactions are managed within spring batch? Thx for your help?