The difference between componentscan and componentscans

stay Spring in @ComponentScan() It is used to scan the comments under a package ,ComponentScans It is also used to scan annotations , But the difference between them is ：

1. ComponentScan You can write one or more packages at a time
   @ComponentScan It is often annotated in @Configuration In the class , Used to add automatically scanned packages . We can use properties basePackages perhaps value Specify one or more packages to scan .
   @ComponentScan("com.nn")
@ComponentScan(value = {"com.nn.bean","com.nn.dao"})
2. ComponentScans You can declare more than one ComponentScan
   @ComponentScans Is another annotation of the scanning package , There is an attribute of the array situation value, The type of array is @ComponentScan, That's one @ComponentScans You can configure multiple @ComponentScan
   @ComponentScans(value={@ComponentScan("com.nn.bean"),@ComponentScan("com.nn.service")})