transactionManager失败

去掉注释就提示listner启动失败，怎么回事
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
<bean id="sessionFactory"   
    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    
        <property name="configLocation">    
            <value>classpath:hibernate.cfg.xml</value>    
        </property>    
</bean>   
<!--
<bean id="transactionManager"
class="org.springframwork.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean> <tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="*" read-only="true" />
</tx:attributes>
</tx:advice> <aop:config>
<aop:pointcut id="allManagerMethod"
expression="public execution(* hfjob.dao.*DAO.*(..))" />
<aop:advisor advice-ref="txAdvice"
pointcut-ref="allManagerMethod" />
</aop:config>
-->
</beans>