我有课程用户:
@Entity
public class User {
@Id
@GeneratedValue
private Integer id;
private String name;
private String password;
@ManyToMany
@JoinTable
private List<Role> roles;
}
类所有者继承自用户
@Entity
public class Owner extends User {
private String pesel;
private String adress;
@OneToMany(cascade={CascadeType.PERSIST, CascadeType.REMOVE})
private List<Pet> pets;
}
并且所有者有宠物
public class Pet {
@Id
@GeneratedValue
private Integer id;
private String name;
private String weight;
@ManyToOne
private Owner owner;
}
启动应用程序时为什么会出错:
org.springframework.data.mapping.PropertyReferenceException:没有 找到属性用户类型Pet!
现在我尝试将用户实例分享给医生和动物的所有者
问题是我不知道我是否正在进行映射,因此想问一下它是否必须看起来像
- EDIT2
我简化了方案,以便更好地说明会发生什么
- EDIT3
目前我的对象已经呈现:
@Entity
public class Pet {
@Id
@GeneratedValue
private Integer id;
private String name;
private String weight;
}
用户
@Entity
public class User {
@Id
@GeneratedValue
private Integer id;
private String name;
private String password;
@ManyToMany
@JoinTable(name="user_roles")
private List<Role> roles;
}
PetOwner
@Entity
public class PetOwner extends User {
private String pesel;
private String adress;
@OneToMany(mappedBy="petOwner")
private List<Pet> pets;
}
答案 0 :(得分:0)
我替换
@ManyToOne
private Owner petOwner;
的
divs.on("mousemove", function() {
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console.log(top + " " + left);
tooltip.style("top", top).style("left", left);
});
它有效。你有PetOwner课吗?
还提供日志错误以获取有关它的更多信息