Unsatisfied dependency problem

[sheetal]

hello, i've encountered this peculiar problem, plz help me. this code below generates exception :
Error creating bean with name 'userAction' defined in ServletContext resource

Could not convert constructor argument value of type [$Proxy6] to required type [org.springframework.transaction.interceptor.Transa ctionProxyFactoryBean]:

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.Hibernat eTemplate">
<property name="sessionFactory">
<ref local="sessionFactory"/>
</property>
</bean>
<bean id="UserDaoImpl" class="com.vonair.nexus.user.UserHibernateDaoImpl" >
<property name="hibernateTemplate">
<ref local="hibernateTemplate"/>
</property>

</bean>
<bean id="UserDaoTarget" class="com.vonair.nexus.user.UserServiceImpl">
<property name="userDao">
<ref local="UserDaoImpl"/>
</property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.hibernate3.Hibernat eTransactionManager">
<property name="sessionFactory">
<ref loca
l="sessionFactory"/>
</property>
</bean>

<bean id="UserDao" class="org.springframework.transaction.interceptor .TransactionProxyFactoryBean">
<property name="proxyInterfaces" value="com.vonair.nexus.user.IUserService"/>
<property name="transactionManager">
<ref bean="transactionManager"/>
</property>
<property name="target">
<ref bean="UserDaoTarget"/>
</property>

<property name="transactionAttributes">
<props>

<prop key="add">PROPAGATION_REQUIRED</prop>
<prop key="modify">PROPAGATION_REQUIRED</prop>
<prop key="delete">PROPAGATION_REQUIRED</prop>
<prop key="findByUniqueCode">PROPAGATION_REQUIRED,readOn ly</prop>
</props>
</property>
</bean>

<bean id="userAction"
class="com.vonair.nexus.user.UserAction" >
<constructor-arg> <ref bean="UserDao"/></constructor-arg>
</bean>

but i've used "UserDao" as userAction's construction argument which is of type org.springframework.transaction.interceptor.Transa ctionProxyFactoryBean then whats the prb?

[mpetrashev]

For what you have introduced constructor with TransationProxyFactoryBean type, not IUserService?

<ref bean="UserDao"/>

will be resolved into instance that TransationProxyFactoryBean provides, not in TransationProxyFactoryBean itself

[sheetal]

thanks a lot for the solve.