springMVC没有事物 保存数据保存不了，纠结一天了

Question

xml配置<aop:aspectj-autoproxy/>
<context:component-scan base-package="net.orc,com.spring3"/>
    <context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="${driverClass}"/>
<property name="jdbcUrl" value="${jdbcUrl}"/>
<property name="user" value="${user}"/>
<property name="password" value="${password}"/>
<property name="initialPoolSize" value="1"/>
<property name="minPoolSize" value="1"/>
<property name="maxPoolSize" value="300"/>
<property name="maxIdleTime" value="60"/>
<!-- 当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3  -->
<property name="acquireIncrement" value="5"/>
<!-- 每60秒检查所有连接池中的空闲连接。Default: 0  -->
<property name="idleConnectionTestPeriod" value="60"/>
</bean> <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml" />
<property name="loadTimeWeaver">
          <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver"/>
    </property>
</bean> 

   <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
   </bean>
   
   <tx:annotation-driven transaction-manager="transactionManager"/>
daopackage net.orc.service.base;import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.springframework.transaction.annotation.Transactional;
@SuppressWarnings("unchecked")
@Transactional
public abstract class DaoSupport<T> implements DAO<T>{
@PersistenceContext protected EntityManager em;
public void save(T entity) {
em.persist(entity);
}

public void update(T entity) {
em.merge(entity);
}
}过来的朋友帮忙看看

Answer 1

是用spring-mvc 吗？，
事物不生效？
你看看
http://blog.csdn.net/zuxianghuang/article/details/6649269

Answer 2

关键是这个
12.    <context:component-scan base-package="com.spring3">  
13.    <!-- 将Service注解给去掉  -->  14.        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>  
15.        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>  
16.    </context:component-scan>  
17.   <context:annotation-config />  

Answer 3

12.    <context:component-scan base-package="com.spring3">  
13.    <!-- 将Service注解给去掉  -->  14.        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>  
15.        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>  
16.    </context:component-scan>  
17.   <context:annotation-config />