Not supported by BasicDataSource

spring 与jpa整合抛Not supported by BasicDataSource 异常，
要把spring 里面hibernate里配置数据源的部分注释掉
<bean id="sessionFactory"
          class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" >
        <property name="dataSource" ref="dataSource"/>
        <!-- 配置文件方式 -->
        <!-- <property name="mappingLocations">
                    <list>
                        <value>classpath:liang/domain/User.hbm.xml</value>
                    </list>
                </property> -->
        <!-- 扫描包注解hibernate方式 -->
        <property name="packagesToScan">
            <list>
                <value>liang.domain</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.MySQLDialect
                </prop>
                <!-- 注释了这段就不抛 Not supported by BasicDataSource  异常-->
                <!-- <prop key="show_sql">${jdbc.show_sql}</prop>
                <prop key="jdbc.use_scrollable_resultset">false</prop>
                <prop key="hibernate.jdbc.batch_size">50</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="hibernate.connection.url"><![CDATA[jdbc:mysql://127.0.0.1:3306/springmvc?useUnicode=true&characterEncoding=UTF-8]]></prop>
                <prop key="hibernate.connection.driver_class">com.mysql.jdbc.Driver</prop>
                <prop key="hibernate.connection.username">root</prop>
                <prop key="hibernate.connection.password">123456</prop>
                <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</prop> -->
                <!-- <prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate4.SpringSessionContext</prop> -->
            </props>
        </property>

    </bean>