Spring封装Hibernate：
有两种手段：1、使用HibernateTemplate；2、继承HibernateDaoSupport（实际上，HibernateDaoSupport本身就是对HibernateTemplate的一个封装）
一切尽在代码中，查看API唉！
注意：hibernate 2.X和hibernate3.X的区别，我用的是2.X 。
package com.company.example.dao;
import java.util.List;
import com.company.example.model.Student;
public interface StudentDao {
public abstract Student getStudent(final Integer id);
public abstract void updateStudent(Student student);
public abstract List findStudentsByLastName(String lastName);
}
==================
package com.company.example.dao.hibernateImpl;
import java.util.List;
import net.sf.hibernate.Hibernate;
import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Session;
import org.springframework.orm.hibernate.HibernateCallback;
import org.springframework.orm.hibernate.HibernateTemplate;
import com.company.example.dao.StudentDao;
import com.company.example.model.Student;
public class StudentDaoHibernate implements StudentDao {
HibernateTemplate hibernateTemplate;
public static void main(String[] args) {
}
public HibernateTemplate getHibernateTemplate() {
return hibernateTemplate;
}
public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}
public Student getStudent(final Integer id) {
return (Student) hibernateTemplate.execute(new HibernateCallback() {
public Object doInHibernate(Session session)
throws HibernateException {
return session.load(Student.class, id);
}
});
}
public Student getStudent2(Integer id) {
return (Student) hibernateTemplate.load(Student.class, id);
}
public void updateStudent(Student student) {
hibernateTemplate.update(student);
}
public List findStudentsByLastName(String lastName) {
return hibernateTemplate.find("from Student student "
+ "where student.lastName = ?", lastName, Hibernate.STRING);
}
}
public class StudentDaoHibernate extends HibernateDaoSupport
implements StudentDao {
...........
}
======The Spring XML Configuration===========
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource"
class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>java:comp/env/jdbc/trainingDatasource</value>
</property>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource"/>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">net.sf.hibernate.dialect.MySQLDialect</prop>
</props>
</property>
<property name="mappingResources">
<list> <!--list of each hbm.xml-->
<value>Student.hbm.xml</value>
<value>Course.hbm.xml</value>
</list>
</property>
<property name="mappingDirectoryLocations">
<list>
<!--list the directory of the hbm.xml, including each xml file in the dir-->
<value>classpath:/com/springinaction/training/model</value>
</list>
</property>
</bean>
<bean id="hibernateTemplate"
class="org.springframework.orm.hibernate.HibernateTemplate">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>
<bean id="studentDao" class="com.company.example.dao.hibernateImpl.StudentDaoHibernate">
<property name="hibernateTemplate">
<ref bean="hibernateTemplate"/>
</property>
</bean>
<bean id="courseDao" class="com.company.example.dao.hibernateImpl.CourseDaoHibernate">
<property name="hibernateTemplate">
<ref bean="hibernateTemplate"/>
</property>
</bean>
</beans>