注解：【有连接表的】Hibernate单向N->1关联

Person与Address关联：单向N->1,【有连接表的】

Person.java

package org.crazyit.app.domain;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

@Entity
@Table(name = "Person_inf")
public class Person {

@Column(name = "person_id")
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;

private String name;

private Integer age;

// 单向N->1:多对一关联关系
@ManyToOne(targetEntity = Address.class, // 指定关联对象
cascade = CascadeType.ALL// 指定级联方式
)
// 显示使用@JoinTable映射连接表
@JoinTable(name = "person_address", // 指定连接表的名称
// 指定连接表中person_id外键列，参照到当前实体对应的主键列
joinColumns = @JoinColumn(name = "person_id", //
referencedColumnName = "person_id", //
unique = true) , //由于此时，关系是N->1,所以需增加unique=true，保证person_Id也作为连接表的主键
// 指定连接表中address_id外键列，参照到当前实体的关联实体对应表的主键列
inverseJoinColumns = @JoinColumn(name = "address_id", //
referencedColumnName = "address_id") //
)
private Address address;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Address getAddress() {
return address;
}

public void setAddress(Address address) {
this.address = address;
}

public Integer getAge() {
return age;
}

public void setAge(Integer age) {
this.age = age;
}

}

Address.java

package org.crazyit.app.domain;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="Address_inf")
public class Address {

@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name="address_id")
private Integer id;
//地址详细
private String addressDetail;
//无参构造方法
public Address() {
}
//初始化全部成员变量
public Address(String addressDetail) {
this.addressDetail = addressDetail;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getAddressDetail() {
return addressDetail;
}
public void setAddressDetail(String addressDetail) {
this.addressDetail = addressDetail;
}

}

数据模型：