spring 事务配置与大对象存取

<!--  jdbc transactionManager
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>
	-->
<jee:jndi-lookup id="dataSource" jndi-name="jdbc/****" />	
	<bean id="transactionManager"
		class="org.springframework.transaction.jta.WebSphereUowTransactionManager"/>
	<bean id="jdbcExtractor"
		class="org.springframework.jdbc.support.nativejdbc.WebSphereNativeJdbcExtractor"
		lazy-init="true"/>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="*" rollback-for="Exception"/>
		</tx:attributes>
	</tx:advice>
	<aop:config>
		<aop:pointcut id="daoPointcut" expression="execution(* *..dao.*.*(..))" />
		<aop:advisor pointcut-ref="daoPointcut" advice-ref="txAdvice"
			order="1" />
	</aop:config>
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler"
		lazy-init="true">
		<property name="nativeJdbcExtractor" ref="jdbcExtractor" />
	</bean>
<bean id="baseDao" class="com.xyzq.common.dao.BaseDao" abstract="true">
		<property name="dataSource" ref="dataSource" />
		<property name="lobHandler" ref="lobHandler" />
	</bean>

事务配置要想在异常出现的时候回滚，需要配置回滚的异常类：rollback-for="Exception" 或定义DataAccessException。

websphere的jta和jdbcExtractor都有专门的实现。

备忘。