在sharding-jdbc-example-mybatis中，shardingContext.xml配置shardingDataSource，使用bean方式的话，支持事务回滚，但使用rdb:data-source方式的话，事务不会回滚

[Ericj100]

shardingContext-rdb.xml配置：

 <context:component-scan base-package="com.dangdang.ddframe.rdb.sharding.example.jdbc"/>

    <bean id="ds_0" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/ds_0"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <bean id="ds_1" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/ds_1"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <rdb:strategy id="databaseStrategy" sharding-columns="user_id" algorithm-expression="ds_${user_id.longValue() % 2}"/>

    <rdb:strategy id="orderTableStrategy" sharding-columns="order_id" algorithm-expression="t_order_${order_id.longValue() % 2}"/>

    <rdb:strategy id="orderItemTableStrategy" sharding-columns="order_id" algorithm-class="com.dangdang.ddframe.rdb.sharding.example.jdbc.algorithm.SingleKeyModuloTableShardingAlgorithm"/>

    <rdb:data-source id="shardingDataSource">
        <rdb:sharding-rule data-sources="ds_0,ds_1">
            <rdb:table-rules>
                <rdb:table-rule logic-table="t_order" actual-tables="t_order_${0..1}" database-strategy="databaseStrategy" table-strategy="orderTableStrategy"/>
                <rdb:table-rule logic-table="t_order_item" actual-tables="t_order_item_0,t_order_item_1" database-strategy="databaseStrategy" table-strategy="orderItemTableStrategy"/>
            </rdb:table-rules>
        </rdb:sharding-rule>
        <rdb:props>
            <prop key="metrics.enable">false</prop>
        </rdb:props>
    </rdb:data-source>

[Ericj100]

<bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="shardingDataSource" />
    </bean>

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

少配置了事务管理导致的