<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
    <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
    <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/snail</property>
    <property name="hibernate.connection.username">postgres</property>
    <property name="hibernate.connection.password">12</property>
    <property name="hibernate.connection.pool_size">1</property>
    <property name="hibernate.current_session_context_class">thread</property>
    
    <mapping class="snail.model.Company" />
  </session-factory>
</hibernate-configuration>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="org.hibernate.tutorial.domain">
  <class name="Company" table="Company">
    <id column="ID" name="id" type="java.lang.Integer">
      <generator class="increment"/>
    </id>
    <property column="NAME" name="name" type="java.lang.String"/>
    <property column="INN" name="inn" type="java.lang.Integer"/>
    <property column="ADDRESS" name="address" type="java.lang.Integer"/>
  </class>
</hibernate-mapping>

package snail.util;

import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

public class HibernateUtil {
    private static SessionFactory sessionFactory;
    private static ServiceRegistry serviceRegistry;

    public static SessionFactory createSessionFactory() {
        Configuration configuration = new Configuration();
        configuration.configure();
        serviceRegistry = new StandardServiceRegistryBuilder().applySettings(
                configuration.getProperties()).build();
        sessionFactory = configuration.buildSessionFactory(serviceRegistry);
        return sessionFactory;
    }
}

public class CompanyRepository {
    public Company getBusById(int id) {
    Session session = null;
    Company company = null;
    try {
        
      session = HibernateUtil.createSessionFactory().openSession();
      company = (Company) session.load(Company.class, id);
    } catch (Exception e) {
        System.err.println("Ошибка-"+e.getMessage());
    } finally {
      if (session != null && session.isOpen()) {
        session.close();
      }
    }
    return company;
  }
}