mybatis数据源?报错

@wenshao 你好，想跟你请教个问题：org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlsessionFactory' defined in class path resource [spring.xml]: Cannot resolve reference to bean 'datasource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'datasource' is defined

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'datasource' is defined 我把项目的数据连接池从dbcp改为druid,启动tomcat就报错了，dbcp下是正常运行的,数据层的框架用的是mybatis ，期待您的回复，一个奋斗的程序员（JAY）

我的配置如下 

<!-- 配置数据源 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close"> 
   <property name="url" value="${url}" />
   <property name="username" value="${username}" />
   <property name="password" value="${password}" />

   <property name="filters" value="stat" />

   <property name="maxActive" value="${maxPoolSize}" />
   <property name="initialSize" value="${initialPoolSize}" />
   <property name="maxWait" value="60000" />
   <property name="minIdle" value="1" />

   <property name="timeBetweenEvictionRunsMillis" value="60000" />
   <property name="minEvictableIdleTimeMillis" value="300000" />

   <property name="validationQuery" value="SELECT 'x'" />
   <property name="testWhileIdle" value="true" />
   <property name="testOnBorrow" value="false" />
   <property name="testOnReturn" value="false" />
   <property name="poolPreparedStatements" value="true" />
   <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
</bean>

<bean id="sqlsessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
   <property name="dataSource" ref="datasource"></property>
   <property name="configLocation" value="classpath:mybatis.xml"/>
</bean>