相关疑难解决方法(0)

我在我的项目中使用Google guice,现在我尝试将框架完全转换为SpringBoot.

我为persistence.xml配置了Bean,如下所示

@Autowired
@Bean(name = "transactionManager")
public LocalContainerEntityManagerFactoryBean entityManagerFactory()
{
    LocalContainerEntityManagerFactoryBean lEMF =  new LocalContainerEntityManagerFactoryBean();
    lEMF.setPersistenceUnitName("leaseManagementPU");
    lEMF.setPersistenceXmlLocation("persistence.xml");
    return lEMF;
}

现在我需要配置(注入)EntityManager em,以执行像em.persist(),em.find等JPA操作...我如何配置,也有人试图用示例代码解释这个

我有一个使用Spring Boot Data jpa的应用程序.到目前为止,我正在使用这样的存储库

public interface StudentRepository extends CrudRepository<StudentEntity, Integer>{
    @Query(value = "" 
        + "SELECT s.studentname "
        + "FROM   studententity s, "
        + "       courseentity c "
        + "WHERE  s.courseid = c.courseid "
        + "       AND s.courseid IN (SELECT c.courseid "
        + "                          FROM   courseentity c "
        + "                          WHERE  c.coursename = ?1)")
    List<String> nameByCourse(String coursename);
}

我如何利用Hibernate在Spring Boot Application中为这种情况提供的Criteria Query