Hibernate

<span style="color:#FF0000;">不维护关系那方@OneToOne(mappedBy="person")：在不维护关系那方添加这个Annotation;由我在对方的属性(字段)来维护。</span>

package org.zttc.itat.model;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.Id;

import javax.persistence.JoinColumn;

import javax.persistence.OneToOne;

import javax.persistence.Table;

@Entity

@Table(name="t_id_card")

public class IDCard {

private int id;

private String no;

private Person person;

@Id

@GeneratedValue

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getNo() {

return no;

}

public void setNo(String no) {

this.no = no;

}

@OneToOne

@JoinColumn(name="pid")

public Person getPerson() {

return person;

}

public void setPerson(Person person) {

this.person = person;

}

}

package org.zttc.itat.model;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.Id;

import javax.persistence.OneToOne;

import javax.persistence.Table;

@Entity

@Table(name="t_person")

public class Person {

private int id;

private String name;

private IDCard idCard;

@OneToOne(mappedBy="person")

public IDCard getIdCard() {

return idCard;

}

public void setIdCard(IDCard idCard) {

this.idCard = idCard;

}

@Id

@GeneratedValue

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

}

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原文链接: Hibernate https://www.mcbbbk.com/newsview348391.html