Spring@ComponentScan注释不起作用

Question

main:
-com.foo
     Application.java       
-com.foo.services
      ItemService.java
      ItemRepository.java    
-com.foo.config
     Configuration.java
test:
-com.foo.services 
     ItemServiceIngegrationTest.java

  @ComponentScan(basePackageClasses = { ItemService.class })

  @ComponentScan(basePackageClasses = { Application.class })

@EnableAutoConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = { Configuration.class })
public class ItemServiceIntegrationTest { 
    . . .
}

@org.springframework.context.annotation.Configuration
@PropertySource("classpath:application.properties")
@ComponentScan(basePackageClasses = { ItemService.class })
public class Configuration extends AbstractMongoConfiguration {
   .  .  .
}   

Answer 1

javadoc表示：

如果未定义特定的包，则将从声明此注释的类的包中进行扫描。

因此，它从声明componentscan的包进行扫描，除非定义了特定的包类。你能把它放在application类中吗？