如上面所示，当我启动测试类方法的时候，就会报bean容器中无法找到ExecuteManager这个bean
Error creating bean with name ‘com.imooc.coupon.executor.ExecuteManagerTest’: Unsatisfied dependency expressed through field ‘manager’; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type ‘com.imooc.coupon.executor.ExecuteManager’ available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}