Hibernate中No row with the given identifier exists

今天做价格策略,报如下异常:

org.springframework.orm.hibernate3.HibernateObjectRetrievalFailureException: No row with the given identifier exists

查了下,发现我的Model是这样写的:

@ManyToOne(fetch = FetchType.EAGER , targetEntity=TProductType.class)
@JoinColumn(name = "PRODUCT_NUM", unique=true, nullable = false, insertable = false, updatable = false)
public TProductType getProductType() {
	
	return productType;
}

@ManyToOne(fetch = FetchType.EAGER, targetEntity=TCommissionType.class)
@JoinColumn(name = "TYPE_NUM",nullable = false, insertable = false, updatable = false)
public TCommissionType getCommissionType() {
	
	return commissionType;
}
 

 其中productType和commissionType映射为联合主键(分别为PRODUCT_NUM、TYPE_NUM),分别从TProductType表、TCommission表引用主键。

一种策略对应1W中产品,即TYPE_NUM是可以重复了,但是映射时候unique = true,错误!!!

1.@JoinColumn(name = "TYPE_NUM")必须去掉unique = true。

2.targetEntity=TCommissionType.class,必须有,否则映射不到实体。

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转载自jun1986.iteye.com/blog/1058504
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