使用JPA从MongoDB加载对象(hibernate)

<dependency>
    <groupId>org.hibernate.ogm</groupId>
    <artifactId>hibernate-ogm-mongodb</artifactId>
    <version>5.4.1.Final</version>
</dependency>

<persistence-unit name="mongo-persistence-unit" transaction-type="JTA">
    <provider>org.hibernate.ogm.jpa.HibernateOgmPersistence</provider>
    <properties>
        <property name="hibernate.ogm.datastore.provider" value="mongodb"/>
        <property name="hibernate.ogm.datastore.database" value="your_database_name"/>
        <property name="hibernate.ogm.datastore.host" value="your_mongodb_host"/>
        <property name="hibernate.ogm.datastore.port" value="your_mongodb_port"/>
        <property name="hibernate.ogm.datastore.username" value="your_mongodb_username"/>
        <property name="hibernate.ogm.datastore.password" value="your_mongodb_password"/>
    </properties>
</persistence-unit>

@Entity
public class User {
    @Id
    private String id;
    private String name;
    // getters and setters
}

EntityManagerFactory emf = Persistence.createEntityManagerFactory("mongo-persistence-unit");
EntityManager em = emf.createEntityManager();

User user = em.find(User.class, "your_user_id");