Spring 自带数据源

<!-- spring自带的数据源 
        <bean id="dataSource"     
          class="org.springframework.jdbc.datasource.DriverManagerDataSource">     
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />  
        <property name="url" value="jdbc:mysql://localhost:3306/test?characterEncoding=utf-8"/>  
        <property name="username" value="root" />     
        <property name="password" value="root" />  
    </bean>  -->