java - 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 getter 和 setter。

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

列的名称是 campaign_content_id，而不是 campaignContentId。当然，其他列也一样。 columnNames 属性需要一个列名数组。不是 Java 字段或属性名称的数组。