Spring事务配置的五种方式

    Spring配置文件中关于事务配置总是由三个组成部分，分别是DataSource、TransactionManager和代理机制这三部分，无论哪种配置方式，一般变化的只是代理机制这部分。

    DataSource、TransactionManager这两部分只是会根据数据访问方式有所变化，比如使用Hibernate进行数据访问时，DataSource实际为SessionFactory，TransactionManager的实现为HibernateTransactionManager。

五种Spring事务的配置方式

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="       
      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
      http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    
    <!-- 注解支持 -->  	
	<context:annotation-config/>

	<!-- 数据源 -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName">
			<value>org.gjt.mm.mysql.Driver</value>
		</property>
		<property name="url">
			<value>jdbc:mysql://localhost:3306/test</value>
		</property>
		<property name="username">
			<value>root</value>
		</property>
		<property name="password">
			<value>root</value>
		</property>
	</bean>  
    
	<!-- JDBC模板 -->
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource">
			<ref local="dataSource" />
		</property>
	</bean>
	<!-- JDBC事务管理器 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource">
			<ref local="dataSource" />
		</property>
	</bean>
	<!-- 事务模板 -->
	<bean id="transactionTemplate"
		class="org.springframework.transaction.support.TransactionTemplate">
		<property name="transactionManager">
			<ref local="transactionManager" />
		</property>
	</bean>
	
	<bean id="baseDao" parent="BaseDao" abstract="true" class="com.*.spt.common.dao.BaseDao">
		<property name="jdbcTemplate">
			<ref local="jdbcTemplate" />
		</property>
	</bean>
	<bean id="testDao" parent="baseDao" class="com.*.spt.common.dao.TestDao"/>
	
	<!-- 方式1：每个Bean都有一个代理（使用org.springframework.transaction.interceptor.TransactionProxyFactoryBean） -->
  	<bean id="testDaoProxy"
		class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
		<property name="target" ref="testDao" />  
        <property name="proxyInterfaces" value="com.*.spt.common.dao.ITestDao" />
		<property name="transactionManager" ref="transactionManager"/>
		<!-- 配置事务属性 -->
		<property name="transactionAttributes">
			<props>
				<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
	</bean>

	<!-- 方式2：所有Bean共享一个代理基类 -->
	<bean id="transactionBase"
		class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
		lazy-init="true" abstract="true">
		<property name="transactionManager" ref="transactionManager" />
		<!-- 配置事务属性 -->
		<property name="transactionAttributes">
			<props>
				<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
	</bean>  
    <bean id="testDao" parent="transactionBase">  
        <property name="target" ref="testDaoTarget" />   
    </bean>
    
	<!-- 方式3：（采用TransactionInterceptor通知和BeanNameAutoProxyCreator自动代理） -->
	<bean id="transactionInterceptor"
		class="org.springframework.transaction.interceptor.TransactionInterceptor">
		<property name="transactionManager">
			<ref local="transactionManager" />
		</property>
		<property name="transactionAttributes">
			<props>
				<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
	</bean>
	<bean
		class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="beanNames">
			<list>
				<!-- 需要管理事务的bean,可以定义若干个 -->
				<value>*Dao</value>
			</list>
		</property>
		<property name="interceptorNames">
			<list>
				<!-- 事务通知，可以定义多个通知 -->
				<value>transactionInterceptor</value>
			</list>
		</property>
	</bean>
	
	<!-- 方式4：使用tx标签配置的拦截器 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="find*" read-only="true"/>
			<tx:method name="get*" read-only="true"/>
			<tx:method name="query*" read-only="true"/>
			<tx:method name="save*" propagation="REQUIRED"/>  
            <tx:method name="delete*" propagation="REQUIRED" />  
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="*" propagation="REQUIRED" />
		</tx:attributes>
	</tx:advice>
	<aop:config proxy-target-class="true">
		<aop:advisor pointcut="execution(* com.*.spt.dao.*.*(..))" advice-ref="txAdvice" />
	</aop:config>
	
	<!-- 方式5：全注解 -->
	<!-- 将所有具有@Transactional注解的Bean自动配置为声明式事务支持 -->
    <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
</beans>