javaconfigで完了すると常にsessionfactoryがnullになる

Question

私のDAOでautowiredされているsessionFactory Beanは常にnullになるように表示されます。以下は私のプロジェクトです。 main.AppMain.main（AppMain.java:20）で com.dao.PersonDaoImpl.savePerson（PersonDaoImpl.java:25）におけるスレッド "メイン" のjava.lang.NullPointerExceptionで

import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer; 
    import org.springframework.context.annotation.Bean; 
    import org.springframework.context.annotation.Configuration; 
    import org.springframework.context.annotation.Import; 
    import org.springframework.core.io.ClassPathResource; 

    @Configuration 
    @Import({HibernateConfig.class}) 
    public class AppConfig { 

     @Bean 
     public PropertyPlaceholderConfigurer propertyPlaceHolderConfigurer(){ 
      PropertyPlaceholderConfigurer prop = new PropertyPlaceholderConfigurer(); 
      prop.setLocation(new ClassPathResource("dbProperties.properties")); 
      prop.setIgnoreUnresolvablePlaceholders(true); 
      return prop; 

     } 

    } 


import java.util.Properties; 
    import javax.sql.DataSource; 
    import org.hibernate.SessionFactory; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.beans.factory.annotation.Value; 
import org.springframework.context.annotation.Bean; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.context.annotation.PropertySource; 
import org.springframework.jdbc.datasource.DriverManagerDataSource; 
import org.springframework.orm.hibernate4.HibernateTransactionManager; 
import org.springframework.orm.hibernate4.LocalSessionFactoryBuilder; 
import  org.springframework.transaction.annotation.EnableTransactionManagement; 

import com.model.Person; 

@Configuration 
//@EnableTransactionManagement 
//@PropertySource(value={"classpath:dbProperties.properties"}) 
public class HibernateConfig { 

    @Value("${driverClassName}") 
    private String driverClassName; 
    @Value("${url}") 
    private String url; 
    @Value("${username}") 
    private String username; 
    @Value("${password}") 
    private String password; 

    @Value("${hibernate.dialect}") 
    private String hibernateDielect; 
    @Value("${hibernate.show_sql}") 
    private String hibernateShowSQL; 
    @Value("${hibernate.hbm2ddl.auto}") 
    private String hibernateHbm2Ddlauto; 

    @Bean 
    public DataSource datasource() { 
     DriverManagerDataSource dataSource = new DriverManagerDataSource(); 
     dataSource.setDriverClassName(driverClassName); 
     dataSource.setUrl(url); 

     dataSource.setUsername(username); 
     dataSource.setPassword(password); 
     return dataSource; 
    } 

    public Properties hibernateProperties() { 
     Properties properties = new Properties(); 
     properties.put("hibernate.dialect", hibernateDielect); 
     properties.put("hibernate.show_sql", hibernateShowSQL); 
     properties.put("hibernate.hbm2ddl.auto", hibernateHbm2Ddlauto); 
     return properties; 

    } 

    @Bean 
    @Autowired 
    public SessionFactory sessionFactory(DataSource dataSource) { 

     LocalSessionFactoryBuilder sessionBuilder = new LocalSessionFactoryBuilder(dataSource); 
     sessionBuilder.scanPackages("com.configuration"); 
     sessionBuilder.addAnnotatedClass(Person.class); 
     sessionBuilder.addProperties(hibernateProperties()); 
     return sessionBuilder.buildSessionFactory(); 
    } 

    @Bean 
    @Autowired 
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) { 
     HibernateTransactionManager transactionManager = new HibernateTransactionManager(); 
     transactionManager.setSessionFactory(sessionFactory); 
     return transactionManager; 
    } 

} 







import java.util.List; 

    import com.model.Person; 

    public interface PersonDao { 

     void savePerson(Person persom); 
     void deletePerson(String taxid); 
     List<Person> getAllPersons(); 
     Person updatePerson(Person person); 
     Person findPersonById(String taxid); 

    } 



import java.util.List; 

    import javax.transaction.Transactional; 

    import org.hibernate.Criteria; 
    import org.hibernate.Query; 
    import org.hibernate.SessionFactory; 
    import org.hibernate.criterion.Restrictions; 
    import org.springframework.beans.factory.annotation.Autowired; 
    import org.springframework.stereotype.Service; 

    import com.model.Person; 

    @Service 
    public class PersonDaoImpl implements PersonDao { 

     @Autowired 
     SessionFactory sessionFactory; 

     @Override 
     @Transactional 
     public void savePerson(Person person) { 
      sessionFactory.getCurrentSession().persist(person); 
     } 

     @Override 
     @Transactional 
     public void deletePerson(String taxid) { 
      // TODO Auto-generated method stub 
      // Criteria criteria = getSession().createCriteria(Person.class); 
      Query query = sessionFactory.getCurrentSession().createSQLQuery("DELETE FROM PERSON WHERE taxid = :taxid"); 
      query.setString(taxid, "taxid"); 

     } 

     @SuppressWarnings("unchecked") 
     @Override 
     @Transactional 
     public List<Person> getAllPersons() { 
      // TODO Auto-generated method stub 
      Criteria criteria = sessionFactory.getCurrentSession().createCriteria(Person.class); 
      return (List<Person>) criteria.list(); 
     } 

     @Override 
     @Transactional 
     public Person updatePerson(Person person) { 
      // TODO Auto-generated method stub 
      sessionFactory.getCurrentSession().update(person); 
      return person; 
     } 

     @Override 
     @Transactional 
     public Person findPersonById(String taxid) { 
      // TODO Auto-generated method stub 
      Criteria criteria = sessionFactory.getCurrentSession().createCriteria(Person.class); 
      criteria.add(Restrictions.eq("taxid", taxid)); 
      return (Person) criteria.uniqueResult(); 

     } 

    } 



import java.sql.Date; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.Id; 
import javax.persistence.Table; 

@Entity 
@Table(name ="person") 

public class Person { 

    @Column(name ="FIRSTNAME") 
    private String firstName; 
    @Column(name ="LASTNAME") 
    private String lastName; 
    @Column(name ="DOB") 
    private Date DOB; 
    @Column(name ="TAXID") 
    @Id 
    private String taxid; 

    public String getFirstName() { 
     return firstName; 
    } 
    public void setFirstName(String firstName) { 
     this.firstName = firstName; 
    } 
    public String getLastName() { 
     return lastName; 
    } 
    public void setLastName(String lastName) { 
     this.lastName = lastName; 
    } 
    public Date getDOB() { 
     return DOB; 
    } 
    public void setDOB(Date dOB) { 
     DOB = dOB; 
    } 
    public String getTaxid() { 
     return taxid; 
    } 
    public void setTaxid(String taxid) { 
     this.taxid = taxid; 
    } 
    @Override 
    public String toString() { 
     return "Person [firstName=" + firstName + ", lastName=" + lastName + ", DOB=" + DOB + ", taxid=" + taxid + "]"; 
    } 
    @Override 
    public int hashCode() { 
     final int prime = 31; 
     int result = 1; 
     result = prime * result + ((DOB == null) ? 0 : DOB.hashCode()); 
     result = prime * result + ((firstName == null) ? 0 : firstName.hashCode()); 
     result = prime * result + ((lastName == null) ? 0 : lastName.hashCode()); 
     result = prime * result + ((taxid == null) ? 0 : taxid.hashCode()); 
     return result; 
    } 
    @Override 
    public boolean equals(Object obj) { 
     if (this == obj) 
      return true; 
     if (obj == null) 
      return false; 
     if (getClass() != obj.getClass()) 
      return false; 
     Person other = (Person) obj; 
     if (DOB == null) { 
      if (other.DOB != null) 
       return false; 
     } else if (!DOB.equals(other.DOB)) 
      return false; 
     if (firstName == null) { 
      if (other.firstName != null) 
       return false; 
     } else if (!firstName.equals(other.firstName)) 
      return false; 
     if (lastName == null) { 
      if (other.lastName != null) 
       return false; 
     } else if (!lastName.equals(other.lastName)) 
      return false; 
     if (taxid == null) { 
      if (other.taxid != null) 
       return false; 
     } else if (!taxid.equals(other.taxid)) 
      return false; 
     return true; 
    } 



} 

import org.springframework.context.annotation.AnnotationConfigApplicationContext; 
import org.springframework.context.support.AbstractApplicationContext; 

import com.configuration.AppConfig; 
import com.dao.PersonDaoImpl; 
import com.model.Person; 

public class AppMain { 

    public static void main(String args[]) { 
     AbstractApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class); 
     Person person = new Person(); 
     person.setFirstName("Akhil"); 
     person.setLastName("goli"); 
     person.setTaxid("123abc456"); 

     PersonDaoImpl impl = new PersonDaoImpl(); 
     impl.savePerson(person); 
     } 
} 

例外

Answer 1

Beanを初期化するには、afterPropertiesSet()に電話する必要があります。これで、Beanを作成しただけで初期化されませんでした。

Answer 2

私はそれを理解しました。私がHibernate4を使用していたので、私は

StandardServiceRegistryBuilderクラスを使用してSessionFactoryを取得する必要があります。

このスニペットが役立つことを願っています。

public class HibernateUtil { 

    public SessionFactory getSessionFactory() 
    { 
     Configuration config = new Configuration().configure(); 

     StandardServiceRegistryBuilder serviceRegistryBuilder = new StandardServiceRegistryBuilder().applySettings(config.getProperties()); 
     SessionFactory session = config.buildSessionFactory(serviceRegistryBuilder.build()); 
     return session; 
    }