目的：想获取中间表的值。

方式

1、联合主键。

public class PersonAndLanguageId implements Serializable {
    private Long languageId;
    private Long personId;
}

2、实体类

@Entity
@Data
@IdClass(PersonAndLanguageId.class)
public class PersonLanguage implements Serializable {
    @Id
    @Column(name = "person_id")
    private Long personId;

    @Id
    @Column(name = "language_id")
    private Long languageId;

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

3、仓库

@Repository
public interface PersonLanguageDao extends JpaRepository<PersonLanguage, PersonAndLanguageId> {
}

4、请求

http://localhost:8001/jpa/personLanguages/?sort=id,desc&page=0&size=3

5、结果

请问
为什么获取不到联合主键的值，怎么才能获取联合主键的值？

languageId和personId字段getter and setter方法需要加上

https://blog.csdn.net/qq_35056292/article/details/77892012

你的sql呢？你的结果是浏览器给的？