//这是id-card的映射文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="demo01">
<class name="id_card">
<id name="id">
<generator class="native" />
</id>
<property name="name" />
<one-to-one name="Person" />
<!-- 创建一对一映射 -->
</class>
</hibernate-mapping>
//这是id-card类实例
package demo01;public class id_card {
private int id;
private String name;
private Person per; 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 Person getPer() {
return per;
} public void setPer(Person per) {
this.per = per;
}}
//这是配置文件
<?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"> <!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>
<session-factory>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.url">jdbc:mysql://localhost:3306/data_01</property>
<property name="connection.username">root</property>
<property name="connection.password">mysqladmin</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="myeclipse.connection.profile">MyEclipse Derby</property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">create</property>
<mapping resource="DAO_/User.bhm.xml" />
<mapping resource="DAO_/School.bhm.xml" />
<mapping resource="DAO_/Student.bhm.xml" />
<mapping resource="demo01/Person.bhm.xml" />
<mapping resource="demo01/id_card.bhm.xml" />
</session-factory>
</hibernate-configuration>
下面是报告的异常 说无法从配置文件 初始化id_card的映射
Exception in thread "main" org.hibernate.InvalidMappingException: Could not parse mapping document from resource demo01/id
<?xml version="1.0" encoding="utf-8"?>
<!-- 映射文件需要指定格式 -->
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="demo01">
<class name="id_card" table="id_card" >
<id name="id" type="java.lang.Integer" >
<generator class="native" />
</id>
<property name="name" type="java.lang.String" >
<column name="name" />
</property>
<one-to-one name="Person" /><!-- 这里是不是少个column属性?就是你Person映射里面的那个外键的名字 -->
<!-- 创建一对一映射 -->
</class>
</hibernate-mapping>
把这个复制过去试试,不行的话加上one-to-one的配置,Person里面外键的名字。
<column name="外键的名字" />
</one-to-one>