有3张表,order_item,product_classification,service_classification;
order_item 中有cls_id,后面两张表两个主键都为cls_id,如果我想同时关联 order_item,下面的写的方法报错:
1.@ManyToOne(cascade = { CascadeType.REFRESH }, fetch = FetchType.LAZY)
@JoinColumn(name = "cls_id")
private ProductClassification productClassification;
@ManyToOne(cascade = { CascadeType.REFRESH }, fetch = F etchType.LAZY)
@JoinColumn(name = "cls_id")
private ServiceClassification serviceClassification;
报重复错误(clsId);
2..@ManyToOne(cascade = { CascadeType.REFRESH }, fetch = FetchType.LAZY)
@JoinColumn(name = "cls_id")
private ProductClassification productClassification;
private ServiceClassification serviceClassification;
报多出一个类;
哪位大侠,指教一下,怎么写,还有就是如果此方法行的通,在页面怎么显示,在order_item主表中,根据cls_id,怎么能有时显示${productClassification.name}有时显示${serviceClassification.name}.(同一列)。