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

開發框架：Spring4+Mybatis3+Jta（atomikos）

運行單元測試報如下錯誤：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'controller.UserController' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

最終排查發現是<context:component-scan/>的緣由致使。

1.   項目結構：
   
2. applicationContext.xml配置信息：

   <?xml version="1.0" encoding="UTF-8"?>
   <beans xmlns="http://www.springframework.org/schema/beans"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns:context="http://www.springframework.org/schema/context"
          xmlns:mvc="http://www.springframework.org/schema/mvc"
          xmlns:tx="http://www.springframework.org/schema/tx"
          xsi:schemaLocation="http://www.springframework.org/schema/beans 
          http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
          http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context-4.3.xsd
          http://www.springframework.org/schema/mvc
          http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
          http://www.springframework.org/schema/tx
          http://www.springframework.org/schema/tx/spring-tx-4.3.xsd" default-autowire="byName">
   
       <!-- 1.掃描註解-->
       <context:component-scan base-package="controller.*"></context:component-scan>
       <context:component-scan base-package="mapper.*"></context:component-scan>
       <context:component-scan base-package="model.*"></context:component-scan>
       <context:component-scan base-package="service.impl"></context:component-scan>
       <!--2.註解驅動-->
       <mvc:annotation-driven></mvc:annotation-driven>
   </beans>

   base-package="controller.*"有誤，應爲base-package="controller"