Springboot2+hibernate5 sessionFactory

项目升级为SpringBoot工程。底层封装了很多业务逻辑，短时间无法迁移到其他持久化框架。
所以分两步，先使用Hibernate过渡，然后再进行其他的迁移。

迁移的过程中，发现sessionFactory无法注入！

最后找到的方法是,在BaseDaoImpl中配置如下信息:

    @Autowired
    private EntityManagerFactory entityManagerFactory;
    /**获取sessionFactory*/
    public SessionFactory getSessionFactory() {
        return entityManagerFactory.unwrap(SessionFactory.class);
    }

    private HibernateTemplate getHibernateTemplate(){
        return new HibernateTemplate(getSessionFactory());
    }

   // 或者
   @PersistenceContext
    private EntityManager entityManager;

    /**获取sessionFactory*/
    public SessionFactory getSessionFactory() {
        Session session = entityManager.unwrap(Session.class);
        return session.getSessionFactory();
    }
    private HibernateTemplate getHibernateTemplate(){
        return new HibernateTemplate(getSessionFactory());
    }

package cn.inovance.iotas.dps.history.config;

import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateProperties;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateSettings;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import java.util.Map;

/**
 * @author wangsheng
 * @Description: hibernate config
 * @date 2021/11/12 16:09
 */

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories
public class HibernateDataSourceConfig {

    @Autowired
    private JpaProperties jpaProperties;

    @Autowired
    private HibernateProperties hibernateProperties;

    @Autowired
    @Qualifier("aircDataSource")
    private DataSource aircDataSource;




    @Bean(name = "aircEntityManagerFactoryBean")
    @Primary
    public LocalContainerEntityManagerFactoryBean aircEntityManagerFactoryBean(EntityManagerFactoryBuilder builder){
        return builder.dataSource(aircDataSource)
                .properties(getVendorProperties(aircDataSource))
                //设置实体类所在位置
                .packages("cn.inovance")
                .persistenceUnit("")
                .build();
    }


    private Map<String,Object> getVendorProperties(DataSource dataSource){
        // return jpaProperties.getHibernateProperties(dataSource);
        return hibernateProperties.determineHibernateProperties(jpaProperties.getProperties(), new HibernateSettings());
    }


    /**
     * EntityManagerFactory类似于Hibernate的SessionFactory,mybatis的SqlSessionFactory
     * 总之,在执行操作之前,我们总要获取一个EntityManager,这就类似于Hibernate的Session,
     * mybatis的sqlSession.
     * @param builder
     * @return
     */
    @Bean(name = "aircEntityManagerFactory")
    public EntityManagerFactory aircEntityManagerFactory(EntityManagerFactoryBuilder builder){
        return this.aircEntityManagerFactoryBean(builder).getObject();
    }


    @Bean(name = "sessionFactory")
    public SessionFactory  sessionFactory(EntityManagerFactoryBuilder builder){
        return this.aircEntityManagerFactory(builder).unwrap(SessionFactory.class);
    }



    /**
     * 配置事物管理器
     */
    @Bean(name = "aircTransactionManager")
    public PlatformTransactionManager aircTransactionManager(EntityManagerFactoryBuilder builder){
        return new JpaTransactionManager(aircEntityManagerFactory(builder));
    }

}