org.springframework.beans.factory.UnsatisfiedDependencyException:个人解决办法

跟着视频学习mybatisPlus时候

执行测试代码,出现报错

 

org.springframework.beans.factory.UnsatisfiedDependencyException:

　　Error creating bean with name 'com.tang.mybaitsplus.MyBatisPlusServiceTest': Unsatisfied dependency expressed through field 'userService';

　　nested exception is org.springframework.beans.factory.

　　NoSuchBeanDefinitionException: No qualifying bean of type 'com.tang.service.UserService' available: expected at least 1 bean which qualifies as autowire candidate.

　　Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

 

 

原因是.创建com.tang.service.UserService实例时,没有找到userService对象,实际就是没有扫描包

在MybaitsplusApplication文件中添加service包扫描代码

 

@SpringBootApplication
@MapperScan("com.tang.mapper")
@ComponentScan("com.tang.service")//添加service扫描包代码

public class MybaitsplusApplication {

public static void main(String[] args) {
SpringApplication.run(MybaitsplusApplication.class, args);
}

}

问题解决