SpringMvc+mybatis 无法注入service的bean

[s550716540]

错误如下
Error creating bean with name 'userController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.ssm.service.UserService com.ssm.controller.UserController.userService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.ssm.service.UserService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)

spring-mvc.xml配置

<context:component-scan base-package="com.ssm.controller"/>
	<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">	
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>

controller 代码

@Controller
public class UserController  {
	@Autowired
	private UserService userService;
	   @RequestMapping("/index")  
	    public String toIndex(HttpServletRequest request,Model model){  
	        int userId = Integer.parseInt(request.getParameter("id"));  
	        User user = this.userService.getUserById(userId);  
	        model.addAttribute("user", user);  
	        return "index";  
	    }  
}

service接口

public interface UserService {
	public User getUserById(int id);
}

service实现

@Service
public class UserServiceImpl implements UserService {
		@Autowired
		private IUserDao userDao;
	@Override
	public User getUserById(int id) {
		// TODO Auto-generated method stub
		return this.userDao.getUserById(id);
	}

}

dao接口

public interface IUserDao {
		public User getUserById(int id);
}

试边百度各种方法均不行 求哪位大神指教

[qq_32872907]

我也碰到这类问题，同问 ？？？？？求大神 ....

[zhoulychn]

先在mybatis的config中批量扫描，然后mybatis和spring整合包有个MapperScannerConfigurer，在spring的配置文件中配置，然后用bean配置service接口。

[hersing]

applicationContext.xml配置文件中只扫描除开controller层的包，在springmvc配置文件中只扫描controller层。

[s550716540]

我把serviceimpl包放进去问题解决了，但总感觉哪里不对

[懒懒程序员]

@Repository("userService ")加上这个 public class UserServiceImpl implements UserService

[clarezzx]

在你service实现类前面加上@Service("userService")

[心随自在飞]

感觉配置有点乱

[wushen333]

<context:component-scan base-package="com.ssm.controller"/> 你的service也在这个包下？如果没有的话，就是没有扫描service，也就没办法注入了

[Smal1_Sun]

我也遇到了相应的问题，看评论说是扫描包的问题，因为com.ssm.controller 只会扫描controller,但是我如果改为com.ssm呢？我的所有包都在ssm下。是否可以扫描到?

[Alyces]

同样的问题，求解决办法；我一直很好奇，网上好多spring+springmvc+mybatis的整合也是这样配置的都可以运行，为何我们的不能

[xiaoluhaohao]

我遇到了同样的问题，搞了一天都没解决，呼叫大牛帮忙看一下

[qq_23848575]

一样的问题 懵B了已经 2天了

[kobolo]

一样的问题，已经好多天了，呼唤大牛！！！

[liuxianzhidx]

我也遇到一样的问题，请问楼主这个问题解决了没有？

[JohnaXu]

在spring的配置文件中添加service自动扫描的包： <context:component-scan base-package="com.xlx.service.*" /> 但是这样的结局是service无法找到dao层的bean

[In_new]

同问啊！！！！！