hibernate—一对一单向外键关联–XML

Student.java:

package com.bjsxt.hibernate;public class Student {private int id;
private String name;
private int age;
private String sex;
private boolean good;
public boolean isGood() {
return good;
}
public void setGood(boolean good) {
this.good = good;
}
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;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
}

StuIdCard.java:

package com.bjsxt.hibernate;public class StuIdCard {
private int id;
private String num;
private Student student;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getNum() {
return num;
}
public void setNum(String num) {
this.num = num;
}
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}}

StuIdCard.hbm.xml:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping>
<class name="com.bjsxt.hibernate.StuIdCard">
<id name="id">
<generator class="native"></generator>
</id><property name="num"/>
<many-to-one name="student" column="studentId" unique="true"></many-to-one>
    </class></hibernate-mapping>

hibernate.cfg.xml:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration>    <session-factory>        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost/hibernate</property>
        <property name="connection.username">root</property>
        <property name="connection.password">linda0213</property>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
       <!--
        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="connection.url">jdbc:oracle:thin:@localhost:1521:SXT</property>
        <property name="connection.username">scott</property>
        <property name="connection.password">tiger</property>
      <property name="dialect">org.hibernate.dialect.OracleDialect</property>
       -->        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">1</property>        <!-- Enable Hibernate's automatic session context management -->
        <property name="current_session_context_class">thread</property>        <!-- Disable the second-level cache  -->
        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>
        <property name="format_sql">true</property>        <!-- Drop and re-create the database schema on startup
        <property name="hbm2ddl.auto">update</property>
 -->
        <!--   -->
 <mapping resource="com/bjsxt/hibernate/Student.hbm.xml"/>
        <mapping resource="com/bjsxt/hibernate/StuIdCard.hbm.xml"/>
<mapping class="com.bjsxt.hibernate.Husband"/>
<mapping class="com.bjsxt.hibernate.Wife"/>    </session-factory></hibernate-configuration>