java - how to use transaction manager in spring 3 -

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i tried using in spring 3 xml file gives error

<tx:annotation-driven transaction-manager="transactionmanager" />

what thinga required work

you need transactionmanager, e.g., 

<bean id="transactionmanager" class="org.springframework.orm.hibernate3.hibernatetransactionmanager">     <property name="sessionfactory" ref="sessionfactory" /> </bean>

which requires sessionfactory in turn requires datasource (here c3p0):

<bean id="sessionfactory" class="org.springframework.orm.hibernate3.annotation.annotationsessionfactorybean">   <property name="datasource" ref="datasource" />      ...  </bean>  <bean id="datasource" class="com.mchange.v2.c3p0.combopooleddatasource" destroy-method="close">    ... </bean>

you need declare transactions. prefer declarative transaction approach annotate database routines @transactional.


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