我的简单Entity类看起来像这样-

Entity
@Table(name ="my_class", uniqueConstraints = {@UniqueConstraint(name = "AAndBAndCAndD", columnNames = { "A","B","C","D"}) })
public class MyClass implements Serializable {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;

    @Column(name = "A")
    private String A;

    @Column(name = "B")
    private String B;

    @Column(name = "C")
    private Integer C;

    @Column(name = "D")
    private Integer D;

    @Column(name = "E")
    private Long E;

    @ElementCollection(targetClass = String.class, fetch = FetchType.EAGER)
    @CollectionTable(name="values_table", joinColumns = @JoinColumn(name="some_table_id", referencedColumnName = "id"))
    @Column(name="values")
    private Set<String> values;

And I created 2 tables like below - 

CREATE TABLE some_table (
    id serial PRIMARY KEY,
    A character varying(10) NOT NULL,
    B character varying(10) NOT NULL,
    C int NOT NULL,
    D int NOT NULL,
    E bigint,
    UNIQUE (A,B,C,D)
);

CREATE TABLE values_table  (
    some_table_id int NOT NULL,
    values VARCHAR(500),
    constraint fk_values_table_some_table
    foreign key (some_table_id) 
    REFERENCES some_table(id)
);

当我将其作为服务的一部分运行时，我看到以下错误
原因：org.hibernate.MappingException：集合外键Map的列数错误：MyClass.values类型：component[id，id] at org.hibernate.mapping.Collection.validate（Collection.java：309）at org.hibernate.mapping.Set.validate（Set.java：40）at org.hibernate.cfg.Configuration.validate（configuration. java：1364）at org.hibernate.cfg.Configuration.buildSessionFactory（configuration. java：1851）at org. hibernate. jpa. boot. internal. configuration. buildManagerFactoryBuilderImpl$4.perform（configuration. FactoryBuilderImpl.java：852）26 more
我尝试了不同的东西，但无法修复错误。谁能帮我找出上面代码的错误？的类的名称
我试图添加一个ID字段的值表，但没有运气。我不明白外键Map有什么问题。