<bean id="propertyConfig" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

        <property name="locations">

            <list>

                <value>classpath:database.properties</value>

            </list>

        </property>

    </bean>

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

        <property name="poolPreparedStatements" value="true" />

        <property name="initialSize" value="1" />

        <property name="maxActive" value="20" />

        <property name="maxIdle" value="5" />

        <property name="validationQuery" value="select 1" /><!-- This one is for MySQL -->

        <!--<property name="validationQuery" value="select 1 from dual" /> This one is for Oracle -->

        <property name="testOnBorrow" value="true" />

        <property name="testWhileIdle" value="true" />

    </bean>

    <bean id="dataSourceLocal" parent="dataSource">

        <property name="driverClassName" value="${db.mysql.local.driver}" />

        <property name="url" value="${db.mysql.local.url}" />

        <property name="username" value="${db.mysql.local.user}" />

        <property name="password" value="${db.mysql.local.password}" />

    </bean>

    <!-- 当有多个数据源时, 自sqlSessionFactory, mapperScannerConfigurer 到 transactionmanager, 都要设置两套id -->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <property name="basePackage" value="com.rockbb.facility.common.dao.mapper, com.rockbb.facility.weixin.dao.mapper" />
        <!-- 当只有一个数据源时,这行可以不写. -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSourceLocal" />

        <property name="mapperLocations">

            <list>

                <value>classpath:com/rockbb/facility/common/dao/mapper/*.xml</value>

                <value>classpath:com/rockbb/facility/weixin/dao/mapper/*.xml</value>

            </list>

        </property>

    </bean>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <property name="dataSource" ref="dataSourceLocal" />

    </bean>

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

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

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

@Transactional("transactionManagerB")

public void doSomething() {

    //....

}