<?xml version="1.0" encoding="GBK"?>
<project name="spring" basedir="." default="">
    <property name="src" value="src"/>
    <property name="dest" value="classes"/>

    <path id="classpath">
        <fileset dir="../../lib">
            <include name="**/*.jar"/>
        </fileset>
        <pathelement path="${dest}"/>
    </path>

    <target name="compile" description="Compile all source code">
        <delete dir="${dest}"/>
        <mkdir dir="${dest}"/>
        <copy todir="${dest}">
            <fileset dir="${src}">
                <exclude name="**/*.java"/>
            </fileset>        
        </copy>
        <javac destdir="${dest}" debug="true" includeantruntime="yes"
            deprecation="false" optimize="false" failonerror="true">
            <src path="${src}"/>
            <classpath refid="classpath"/>
            <compilerarg value="-Xlint:deprecation"/>
        </javac>
    </target>

    <target name="run" description="Run the main class" depends="compile">
        <java classname="lee.SpringTest" fork="yes" failonerror="true">
            <classpath refid="classpath"/>
        </java>
    </target>

</project>
drop database spring;
create database spring;
use spring;

create table news_inf
(
 news_id int primary key auto_increment,
 news_title varchar(255) unique,
 news_content varchar(255)
);

　　

<?xml version="1.0" encoding="GBK"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://www.springframework.org/schema/beans"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
	<!-- 定义数据源Bean，使用C3P0数据源实现，并注入数据源的必要信息 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
		destroy-method="close"
		p:driverClass="com.mysql.jdbc.Driver"
		p:jdbcUrl="jdbc:mysql://localhost/spring"
		p:user="root"
		p:password="32147"
		p:maxPoolSize="40"
		p:minPoolSize="2"
		p:initialPoolSize="2"
		p:maxIdleTime="30"/>
	<!-- 配置JDBC数据源的局部事务管理器，使用DataSourceTransactionManager 类 -->
	<!-- 该类实现PlatformTransactionManager接口，是针对采用数据源连接的特定实现-->
	<!-- 配置DataSourceTransactionManager时需要依注入DataSource的引用 -->
	<bean id="transactionManager" 
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
		p:dataSource-ref="dataSource"/>
	<!-- 配置一个业务逻辑Bean -->
	<bean id="newsDao" class="org.crazyit.app.dao.impl.NewsDaoImpl"
		p:ds-ref="dataSource"/>
	<!-- 为业务逻辑Bean配置事务代理
		transactionManager用于为配置事务代理注入所需的事务管理器
		target用于指定为哪个Bean配置事务代理 -->
	<bean id="newsDaoTrans" class=
	"org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
		p:transactionManager-ref="transactionManager"
		p:target-ref="newsDao">
		<!-- 指定事务属性 -->
		<property name="transactionAttributes"> 
			<props> 
				<prop key="*">PROPAGATION_REQUIRED</prop> 
			</props>
		</property>
	</bean> 
</beans>

　　

package lee;

import org.springframework.context.support.*;
import org.springframework.context.*;

import org.crazyit.app.dao.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public class SpringTest
{
	public static void main(String[] args)
	{
		// 创建Spring容器
		ApplicationContext ctx = new
			ClassPathXmlApplicationContext("beans.xml");
		// 获取事务代理Bean
		NewsDao dao = (NewsDao)ctx
			.getBean("newsDaoTrans" , NewsDao.class);
		// 执行插入操作
		dao.insert("疯狂Java" , "轻量级Java EE企业应用实战");
	}
}

　　

package org.crazyit.app.dao;

/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public interface NewsDao
{
    public void insert(String title, String content);
}
package org.crazyit.app.dao.impl;

import javax.sql.DataSource;
import java.sql.Connection;

import org.springframework.jdbc.core.JdbcTemplate;

import org.crazyit.app.dao.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public class NewsDaoImpl implements NewsDao
{
    private DataSource ds;
    public void setDs(DataSource ds)
    {
        this.ds = ds;
    }
    public void insert(String title, String content)
    {
        JdbcTemplate jt = new JdbcTemplate(ds);
        jt.update("insert into news_inf"
            + " values(null , ? , ?)"
            , title , content);
        // 两次插入的数据违反唯一键约束
        jt.update("insert into news_inf"
            + " values(null , ? , ?)"
            , title , content);
        // 如果没有事务控制，则第一条记录可以被插入
        // 如果增加事务控制，将发现第一条记录也插不进去。
    }
}