org.springframework.beans.factory.BeanCreationException:

Error creating bean with name 'testController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.test.www.web.service.user.UserService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)}

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException:

No qualifying bean of type [com.test.www.web.service.user.UserService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)}

<!-- 自动扫描包 ,将带有注解的类 纳入spring容器管理 -->

    <context:component-scan base-package="com.test.www"></context:component-scan>

<!-- mybatis文件配置，扫描所有mapper文件 -->

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" p:dataSource-ref="dataSource"

          p:configLocation="/WEB-INF/conf/mybatis-config.xml"

          p:mapperLocations="classpath*:com/test/www/web/dao/*.xml"/>

    <!-- spring与mybatis整合配置，扫描所有dao -->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" p:basePackage="com.test.www.web.dao"

          p:sqlSessionFactoryBeanName="sqlSessionFactory"/>

<!-- 事务 aop 配置 -->

    <aop:config>

        <aop:pointcut id="serviceMethods" expression="execution(* com.test.www.web.service..*(..))"/>

        <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods"/>

    </aop:config>