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                            ## 配置一對多關系
Customer類:
~~~
//配置一對多關系
//targetEntity:對面的字節碼文件類. mappedBy:自己在對面的屬性名,出現在哪一方意味著哪一方不去維護外鍵了
@OneToMany(targetEntity = Linkman.class, mappedBy = "customer")
private Set<Linkman> linkmens = new HashSet<>();
~~~

Linkman類:
~~~
//對方字節碼文件
@ManyToOne(targetEntity = Customer.class)
//name:外鍵字段名.referencedColumnName:指向的主鍵字段名
@JoinColumn(name = "cust_id",referencedColumnName = "cust_id")
private Customer customer;
~~~
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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