Many to One 怎么样配置组合主键后自动生成了前缀，在hql查询中还使用了LEFT JOIN，在线等，全分送

映射关系中，不需要按SQL那样写JOIN的。

SELECT per.* FROM Personne per WHERE per.site.xxx=?

关系的中间表，不需要建立entity。直接在ManyToOne和OneToMany中设置

你的KeyValuePK里面的内容，直接添加就可以！

public class BillTbodyPK implements Serializable {

private static final long serialVersionUID = -1190986010439330142L

private SingleInfo mid

private BillHeadModel billId

public BillTbodyPK() {

}

// setter getter

@ManyToOne(fetch = FetchType.LAZY,cascade = { CascadeType.ALL })

@JoinColumn(name = "mid", referencedColumnName = "mid", unique = false, nullable = false, insertable = false, updatable = false)

@NotFound(action = NotFoundAction.IGNORE)

@Cache(usage = CacheConcurrencyStrategy.READ_ONLY)

public SingleInfo getMid() {

return mid

}

public void setMid(SingleInfo mid) {

this.mid = mid

}

@ManyToOne

@JoinColumn(name = "dj_id", nullable = false)

@NotFound(action = NotFoundAction.IGNORE)

@Cache(usage = CacheConcurrencyStrategy.READ_ONLY)

public BillHeadModel getBillId() {

return billId

}

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