//

package org.crazy.app.domain;

import java.util.HashSet;

import java.util.Set;

import javax.persistence.*;

@Entity

@Table(name="person_inf")

public class Person {

    @Id

    @Column(name="person_id")

    @GeneratedValue(strategy=GenerationType.IDENTITY)

    private Integer id;

    private String name;

    private int age;

    @ManyToMany(targetEntity=Address.class)

    @JoinTable(name="person_address",

    joinColumns=@JoinColumn(name="person_id",referencedColumnName="person_id"),

    inverseJoinColumns=@JoinColumn(name="address_id",referencedColumnName="address_id"))

    private Set<Address> address=new HashSet<Address>();

    public Person() {

    }

    public Person(String name, int age) {

        this.name = name;

        this.age = age;

    }

    //

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public int getAge() {

        return age;

    }

    public void setAge(int age) {

        this.age = age;

    }

    public Set<Address> getAddress() {

        return address;

    }

    public void setAddress(Set<Address> address) {

        this.address = address;

    }

}

//**************************************

package org.crazy.app.domain;

import java.util.HashSet;

import java.util.Set;

import javax.persistence.*;

@Entity

@Table(name="address_inf")

public class Address {

    @Id

    @Column(name="address_id")

    @GeneratedValue(strategy=GenerationType.IDENTITY)

    private Integer addressId;

    private String addressDetail;

    @ManyToMany(targetEntity=Person.class)

    @JoinTable(name="person_address",

    joinColumns=@JoinColumn(name="address_id",referencedColumnName="address_id"),

    inverseJoinColumns=@JoinColumn(name="person_id",referencedColumnName="person_id"))

    private Set<Person> persons=new HashSet<Person>();

    public String getAddressDetail() {

        return addressDetail;

    }

    public void setAddressDetail(String addressDetail) {

        this.addressDetail = addressDetail;

    }

    public Set<Person> getPersons() {

        return persons;

    }

    public void setPersons(Set<Person> persons) {

        this.persons = persons;

    }

    public Address(String addressDetail) {

        this.addressDetail = addressDetail;

    }

    public Address() {

    }

}

        Person p = new Person();

        // 设置Person的name为crazyit

        p.setName("crazyit");

        p.setAge(20);

        // 持久化Person对象(对应于插入主表记录)

        session.save(p);

        // 创建一个瞬态的Address对象

        Address a = new Address("广州天河");

        // 先设置Person和Address之间的关联关系

        a.getPersons().add(p);

        // 再持久化Address对象

        session.persist(a);

        // 创建一个瞬态的Address对象

        Address a2 = new Address("上海虹口");

        // 先设置Person和Address之间的关联关系

        a2.getPersons().add(p);

        // 再持久化Address对象(对应于插入从表记录)

        session.persist(a2);

        Person p2 = new Person();

        p2.setName("fkit");

        p2.setAge(29);

        p2.getAddress().add(a2);

        session.save(p2);