Hibernate 再接触 关系映射 一对一单向外键联合主键关联

例子:

Husband.java

package com.bjsxt.hibernate;
 
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinColumns;
import javax.persistence.OneToOne;
 
@Entity
public class Husband {
    private int id;
    private String name;
    private Wife wife;
    @Id
    @GeneratedValue
    public int getId() {
        return id;
    }
 
    public String getName() {
        return name;
    }
    @OneToOne
    @JoinColumns(
        {
            @JoinColumn(name="wifeId", referencedColumnName="id"),     //设置字段名
            @JoinColumn(name="wifeName", referencedColumnName="name")
        }
    )
    public Wife getWife() {
        return wife;
    }
    public void setId(int id) {
        this.id = id;
    }
    public void setName(String name) {
        this.name = name;
    }
    public void setWife(Wife wife) {
        this.wife = wife;
    }
 
}

Wife.java

package com.bjsxt.hibernate;
 
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.IdClass;
 
@Entity
@IdClass(WifePK.class)
public class Wife {
    private int id;
    private String name;
    private int age;
 
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    @Id
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    @Id
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
 
}

Wifepk.java

package com.bjsxt.hibernate;
 
import java.io.Serializable;
 
public class WifePK implements Serializable {
    private int id;
    private String name;
 
    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;
    }
 
}

test

    @Test
    public void testSchemaExport() {
        new SchemaExport(new AnnotationConfiguration().configure()).create(false, true);
    }

总结