spring中事务管理的问题

Question

大家看下我的配置，我总感觉我的配置有些混乱，大家能不能给些精简的办法，还有，如果，我要在业务层实现事务管理，请问该怎么办？id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref local="dataSource" />
</property>
<property name="mappingDirectoryLocations">
<list>
<value>/WEB-INF/mapping</value>
</list>
</property> <property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property> </bean> <bean id="transactionAttributeSource"
class="org.springframework.transaction.interceptor.NameMatchTransactionAttributeSource">
<property name="properties">
<props>
<prop key="save*">PROPAGATION_REQUIRED</prop>
<prop key="update*">PROPAGATION_REQUIRED</prop>
<prop key="del*">PROPAGATION_REQUIRED</prop>
<prop key="query*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>
<bean id="transactionInterceptor"
class="org.springframework.transaction.interceptor.TransactionInterceptor">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="transactionAttributeSource">
<ref bean="transactionAttributeSource" />
</property>
</bean>

Answer 1

<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>   <bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation"
value="classpath:hibernate.cfg.xml">
</property>
</bean>
<bean id="NoticeDAO" class="dao.NoticeDAO">
<property name="sessionFactory">
<ref bean="sessionFactory"></ref>
</property>
</bean>
<bean id="transactionManager"
      class="org.springframework.orm.hibernate3.HibernateTransactionManager">
   <property name="sessionFactory">
           <ref local="sessionFactory"/>
   </property>
</bean>

Answer 2

@Transactional
public class NoticeDAO以上为标注法实现事务