Spring4学习（五）声明式事务配置一

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#Spring #声明式事务

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本文介绍如何使用Spring的DataSourceTransactionManager进行声明式事务管理配置。通过XML方式定义事务管理器和事务策略，实现对数据库操作的统一事务控制。

基于Spring的DataSourceTransactionMananger类事务管理器配置声明式事务

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
        
        
	<!-- 使用spring注解  -->
   <!--  <context:annotation-config/> -->
    <!-- 下面的配置告诉spring容器自动scanner用注解标注bean -->
   <context:component-scan base-package="org.lian"/>
<!--配置数据源  -->
	<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <context:property-placeholder location="/conf/datasource/jdbc.properties"/>
    
    <!-- spring 声明式事务配置  -->
    <!--transaction manager 声明事务管理器   使用spring PlatformTransactionManager-->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    	<property name="dataSource" ref="dataSource"/>
	</bean>
    
    <!-- 配置事务策略 -->
     <tx:advice id="txAdvice" transaction-manager="txManager">
        <!-- the transactional semantics... -->
        <tx:attributes>
            <!-- all methods starting with 'get' are read-only -->
            <tx:method name="get*" read-only="true"/>
            <tx:method name="count*" read-only="true"/>
            <!-- other methods use the default transaction settings (see below) -->
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
    <!--  execution(* org.lian.service.ContactsManagerService.*(..)) -->
    <!--  execution(* org.lian.service.*.*(..))  包下的所有方法 -->
    <!--  execution(* org.lian.service..*Service.*(..))  包下Service结尾Interface-->
    
    <aop:config>
        <aop:pointcut id="serviceOperation" expression="execution(* org.lian.service..*Service.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceOperation"/>
    </aop:config>
    
</beans>

service层java interface

package org.lian.service;

import org.lian.domain.Contacts;

public interface ContactsManagerService {

	public Contacts getContacts(Contacts contacts);

	public void addContacts(Contacts contacts);

	public void editContacts(Contacts contacts);
}

实现类

@Service("contactsManagerService")
public class ContactsManagerServiceImpl implements ContactsManagerService {

	@Autowired
	@Qualifier("contactsDao")
	private ContactsDao contactsDao;

	public ContactsDao getContactsDao() {
		return contactsDao;
	}

	public void setContactsDao(ContactsDao contactsDao) {
		this.contactsDao = contactsDao;
	}

	@Autowired
	@Qualifier("musicDao")
	private MusicDao musicDao;

	public MusicDao getMusicDao() {
		return musicDao;
	}

	public void setMusicDao(MusicDao musicDao) {
		this.musicDao = musicDao;
	}

	@Override
	public Contacts getContacts(Contacts contacts) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void addContacts(Contacts contacts) {
		Music music = new Music();
		music.setId(IdGenerator.getInstance().getUUID());
		music.setName("唇语");
		music.setSinger("任然");
		music.setAlbum("从小到大");
		music.setAuthor("耕耕");
		music.setComposer("Xun");
		music.setStyle("流行");
		music.setDuration("04:48");
		// 添加一个music对象
		musicDao.add(music);
		contactsDao.insertContacts(contacts);
		// 事务
	}

	@Override
	public void editContacts(Contacts contacts) {
		// TODO Auto-generated method stub

	}

}