无法创建未找到的唯一键约束

Question

我有以下实体:

@Entity
@Table(name = "campaign_content", uniqueConstraints = @UniqueConstraint(columnNames = { "campaignContentId", "campaignId", "fieldTag" }))    
public class CampaignContent implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @Column(name = "campaign_content_id")
    private Integer campaignContentId;

    @Column(name = "field_content")
    private String fieldContent;

    @Column(name = "campaign_id")
    private Integer campaignId;

    @Column(name = "field_tag")
    private String fieldTag;

有吸气剂和二传手.

但是我得到:

caused by: org.hibernate.AnnotationException: Unable to create unique key constraint (campaignContentId, campaignId, fieldTag) on table campaign_content: campaignContentId, campaignId, fieldTag not found

怎么了？

Answer 1

列的名称campaign_content_id不是campaignContentId.当然,其他列也是如此.该columnNames属性需要一组...列名.不是Java字段或属性名称的数组.

Answer 2

在我的情况下，此代码有效，一个物理表字段名称和一个实体对象成员字段名称。

@Table(uniqueConstraints={@UniqueConstraint(columnNames = {"account_id" , "measureDate"})})

但是这段代码在相同的例外情况下根本不起作用。

@Table(uniqueConstraints={@UniqueConstraint(columnNames = {"account_id" , "measure_date"})})

有人报告这个错误休眠。检查这个。 https://forum.hibernate.org/viewtopic.php?f=9&t=986581&view=next

我用

• 弹簧靴
• 弹簧数据
• mysql