问在实体的映射中实例化[org.grails.orm.hibernate.HibernateDatastore]：类型重复列的bean时出错

EN

    package micronaut.query.association.domain
    import com.fasterxml.jackson.annotation.JsonManagedReference
    import org.grails.datastore.gorm.GormEntity

    @grails.gorm.annotation.Entity
    class Author implements GormEntity<Author> {
        String name
    @JsonManagedReference
        List<Book> books

        static mapping = {
        books fetch: 'join'
        }
    }
    package micronaut.query.association.domain

    import com.fasterxml.jackson.annotation.JsonBackReference
    import org.grails.datastore.gorm.GormEntity

    @grails.gorm.annotation.Entity
    class Book implements GormEntity<Book> {
        String name
    @JsonBackReference
    Author authorx
    }
}