Question

我有以下JPA存储库：

@Repository
public interface EntityRepository extends JpaRepository<Long, Long> {

@Query(value = "SELECT e.id "
            + "FROM schema.entity e "
            + "WHERE e.number = :number", nativeQuery = true)
Long getEntityByNumber(@Param("number") String number);

}

我有以下例外：

引起：org.springframework.beans.factory.BeanCreationException：创建名为'jpaMappingContext'的bean时出错：init方法的调用失败;嵌套异常是java.lang.IllegalArgumentException：必须至少存在一个JPA元模型！

我做错了什么？

Answer 1

您必须使用Long class创建@Entity。

像：

Private Sub MyMethod(sender As Object, e As RoutedEventArgs)
    Dim mnuItm as MenuItem = DirectCast(sender, MenuItem)
    Dim dataContext = DirectCast(mnuItm, MainWindow) '<-- change MainWindow to the name of the class where the MyList property is defined
    Dim org = dataContext.Items
End Sub

Spring Data - 必须至少存在一个JPA元模型

1 个答案: