使用Hibernate 和 Spring 实现一个事务持久层

类别:Java 点击:0 评论:0 推荐:

1.首先实现一个接口.

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package com.cqtele.tnbos;
import java.util.*;
public interface IUserDao {
 public void insertUser(userInfo user);
 public List findUser(String sql);
}

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2. 实现这个接口.

  这里使用 Spring的 AOP-driven HibernateTemplate 简化 Hibernate 会话的处理.

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package com.cqtele.tnbos;
import java.util.*;

import net.sf.hibernate.*;
import net.sf.hibernate.cfg.*;
import java.io.Serializable;
import org.springframework.orm.hibernate.*;//.HibernateCallback;
import org.springframework.orm.hibernate.support.HibernateDaoSupport;

public class userDAO extends HibernateDaoSupport implements IUserDao
{
 //public List name=null;
 //Session session;
 private List list=null;
 public void insertUser(userInfo user)
 {
   getHibernateTemplate().saveOrUpdate(user);
 }
 public List findUser(String sql)
 {
  return getHibernateTemplate().find(sql); 
 }
}

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3.声明式管理事务.

  bean.xml

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<?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.apache.commons.dbcp.BasicDataSource"
  destroy-method="close">
  <property name="driverClassName">
   <value>com.mysql.jdbc.Driver</value>
  </property>
  <property name="url">
   <value>jdbc:mysql://127.0.0.1:3306/opertselect?useUnicode=true&amp;characterEncoding=GBK</value>
  </property>
   <property name="username">
   <value>root</value>
  </property>
   <property name="password">
   <value></value>
  </property>
 </bean>
 
 <bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSessionFactoryBean">
  <property name="dataSource">
   <ref local="dataSource" />
  </property>
  <property name="mappingResources">
   <list>
    <value>userInfo.hbm.xml</value>
    <!--value>Fruits.hbm.xml</value-->
   </list>
  </property>
  <property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">
     net.sf.hibernate.dialect.MySQLDialect
    </prop>
    <prop key="hibernate.show_sql">true</prop>
   </props>
  </property>
 </bean>
  
 <bean id="transactionManager" class="org.springframework.orm.hibernate.HibernateTransactionManager">
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
 </bean>
 <bean id="userDAO" class="com.cqtele.tnbos.userDAO">
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
 </bean>
 <bean id="DAOProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
  <property name="transactionManager">
   <ref bean="transactionManager" />
  </property>
  <property name="target">
   <ref local="userDAO" />
  </property>
  <property name="transactionAttributes">
   <props>
    <prop key="insert*">PROPAGATION_REQUIRED</prop>
    <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
   </props>
  </property>
 </bean>
</beans>
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4.使用.(这是关于一个购物车的例子.)
==============================================================================

package com.cqtele.tnbos;

import java.util.*;
import java.io.*;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.aopalliance.aop.Advice;

public class login{
 private List list=null;
 private String sql="from userInfo";
 
 public List getAllMessageList()
 {
  try{
   InputStream is = new FileInputStream("bean.xml");
   XmlBeanFactory factory = new XmlBeanFactory(is);
   IUserDao user = (IUserDao)factory.getBean("DAOProxy");
   list = user.findUser(sql);
  }catch(IOException ioe)
  {
   System.out.println("getAllMessageList Ocurr Error!! Message: "+ioe.getMessage());
  }
  return list;
 }
}

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5.总结

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Hibernate 是一种先进的 OR 映射工具,而 Spring 是一个 AOP 框架和 IOC 容器。这两种技术的综合使用,使得开发人员可以编写媲美数据库厂商的代码,它可以在 J2EE 容器中运行,也可以单独运行.

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