Question

休眠

我有一个实体：工厂

detailsOfPans.forEach(map -> map.forEach((k, v) -> {
    // Do something with k, v
}));

在百里香叶中向工厂添加电子邮件，

@Entity
public class Factories extends BaseEntity {

    @Id
    @SequenceGenerator(name = "factories_id_seq", sequenceName = "factories_id_seq", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "factories_id_seq")
    private Integer id;


    @ElementCollection
    private Set<String> emails = new HashSet<String>();

    //get set...
}

当我尝试保存时，我得到了

org.springframework.beans.InvalidPropertyException：无效的属性 Bean类[com.lcm.model.Factories]的“ emails [0]”：属性索引属性路径“ emails [0]”中引用的数组都不是既不是列表也不是地图；返回值是[[]]

Answer 1

这是不可能的，因为设置没有顺序...请检查此帖子，还有其他选择...

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1 个答案: