小结

Spring Data JPA返回ids for this class must be manually assigned before calling save()错误，进行了解决。

问题及解决

Spring Boot应用存入数据时返回以下错误：

{"errorCode":"INTERNAL_ERROR","message":"ids for this class must be manually assigned before calling save(): ...","status":500,"timestamp":"2024-06-16T21:22:46.4322143"}

具体错误也就是插入数据时ID的主键没有人为指定赋值，需要指定合适的生成策略。

由以下代码：

    @Id
    @Column(name = "FILEID", nullable = false)
    private Integer id;

添加@GeneratedValue(strategy = GenerationType.IDENTITY)， 修改为以下：

    @Id
    @Column(name = "FILEID", nullable = false)
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

问题解决！

参考

CSDN: spring data jpa报错ids for this class must be manually assigned before calling save()
CSDN: ids for this class must be manually assigned before calling save(): me.zhengjie.modules.system.domai