求解：spring结合mybatis配置多数据源报错 ： 配置报错 

项目中要操作多个数据库的表，因此要配置多个数据源，配置如下：
<context:property-placeholder location="classpath:config/jdbc.properties" />

    <!-- DataSource数据源，使用c3p0连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driverClassName}"></property> <property name="jdbcUrl"     value="${jdbc.url}"></property> <property name="user"        value="${jdbc.username}"></property> <property name="password"    value="${jdbc.password}"></property> <property name="minPoolSize" value="20"></property> <property name="maxPoolSize" value="40"></property> <property name="initialPoolSize" value="20"></property>  <property name="maxIdleTime" value="10000"></property> <property name="acquireIncrement" value="10"></property> <property name="maxStatements" value="0"></property> <property name="idleConnectionTestPeriod" value="60"></property> </bean>

<!-- pojo 映射 -->     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">         <property name="dataSource" ref="dataSource" />         <property name="configLocation" value="classpath:mybatis/mybatis-config-service.xml"/>         <!--define entity package  -->         <property name="typeAliasesPackage" value="com.app.anilys.dc.domain." />     </bean>          <!-- 数据源2配置 start --> <bean id="activityDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driverClassName}"></property> <property name="jdbcUrl"     value="${jdbc.activity.url}"></property> <property name="user"        value="${jdbc.username}"></property> <property name="password"    value="${jdbc.password}"></property> <property name="minPoolSize" value="20"></property> <property name="maxPoolSize" value="40"></property> <property name="initialPoolSize" value="20"></property>  <property name="maxIdleTime" value="10000"></property> <property name="acquireIncrement" value="10"></property> <property name="maxStatements" value="0"></property> <property name="idleConnectionTestPeriod" value="60"></property> </bean> <bean id="activitySqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">         <property name="dataSource" ref="activityDataSource" />         <property name="configLocation" value="classpath:mybatis/mybatis-config-activity.xml"/>         <property name="typeAliasesPackage" value="com.app.anilys.dc.domain." />     </bean> <!-- 数据源2配置 end -->           <!-- 自动扫描组件，这里要把controler下面的 controller去除，他们是在spring3-servlet.xml中配置的，如果不去除会影响事务管理的。   --> <context:component-scan base-package="com.app.anilys.dc">         <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />      </context:component-scan>         <!-- @AspectJ的支持，从而可以实现通过注解方式将通知编织到非公共方法中。 -->     <aop:aspectj-autoproxy proxy-target-class="true"/>         <!-- 扫描mapper -->     <bean name="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">       <property name="basePackage" value="com.app.anilys.dc.dao." />       <property name="sqlSessionFactory" ref="sqlSessionFactory" />     </bean>    
    <bean name="activityMapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">       <property name="basePackage" value="com.app.anilys.dc.dao." />       <property name="sqlSessionFactory" ref="activitySqlSessionFactory" />     </bean>

<!-- dao 事务 -->     <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">         <property name="dataSource" ref="dataSource" />     </bean>     <!-- 数据源2事务管理器配置 start -->     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">         <property name="dataSource" ref="activityDataSource" />     </bean>     <!-- 数据源2事务管理器配置 end -->          <!-- spring 声明事务管理 --> <aop:config> <aop:pointcut id="fooServiceMethods" expression="execution(* com.app.anilys.dc.serviceimpl...(..))"/>          <aop:advisor advice-ref="txAdvice" pointcut-ref="fooServiceMethods"/>  </aop:config> <aop:config> <aop:pointcut id="controllerMethods" expression="execution( com.app.anilys.dc.controller...*(..))"/>          <aop:advisor advice-ref="txAdvice" pointcut-ref="controllerMethods"/>  </aop:config>

<!-- 数据源2事务通知配置 start --> <aop:config> <aop:pointcut id="activityFooServiceMethods" expression="execution(* com.app.anilys.dc.serviceimpl...(..))"/>          <aop:advisor advice-ref="activityTxAdvice" pointcut-ref="activityFooServiceMethods"/>  </aop:config> <aop:config> <aop:pointcut id="activityControllerMethods" expression="execution( com.app.anilys.dc.controller...*(..))"/>          <aop:advisor advice-ref="activityTxAdvice" pointcut-ref="activityControllerMethods"/>  </aop:config> <!-- 数据源2事务通知配置 end -->

<!-- 事务管理配置 --> <tx:advice id="txAdvice" transaction-manager="txManager"> <tx:attributes> <tx:method name="select*" read-only="true" propagation="REQUIRED" />             <tx:method name="find*"   read-only="true" propagation="REQUIRED" />             <tx:method name="get*"   read-only="true" propagation="REQUIRED" />             <tx:method name="save*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="update*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="add*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="delete*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="start*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="" rollback-for="V20Exception"/> </tx:attributes> </tx:advice> <!-- 数据源2事务通知配置 start --> <tx:advice id="activityTxAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="select" read-only="true" propagation="REQUIRED" />             <tx:method name="find*"   read-only="true" propagation="REQUIRED" />             <tx:method name="get*"   read-only="true" propagation="REQUIRED" />             <tx:method name="save*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="update*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="add*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="delete*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="start*" propagation="REQUIRED" isolation="REPEATABLE_READ" />             <tx:method name="*" rollback-for="V20Exception"/> </tx:attributes> </tx:advice> <!-- 数据源2事务通知配置 end --> <beans>
启动tomcat，访问工程应用，报如下错误：
org.springframework.jdbc.BadSqlGrammarException:  ### Error querying database.  Cause: com.microsoft.sqlserver.jdbc.SQLServerException: 对象名 'ActivityUser' 无效。 但是ActivityUser在其中上述配置文件数据源为 activityDataSource的库中存在的，说明这个数据源没有起作用，运行的时候还是在数据源为 dataSource的库中去找表，所以报如上错误，烦请各位帮我看看为何数据源 activityDataSource没起作用，多个数据源该如何配置和实现呢？