<context:component-scan base-package="packageA" />

Does this instantiate all beans defined in packageA.*(base package and sub-packages) ?

CodePudding user response：

If your question is "does it apply to subpackages automatically", then the answer is yes.

Beans in the base package and sub packages will be found by Spring when using component-scan or @ComponentScan.

CodePudding user response：

Spring will search every class within this package.

No, it will not instantiate the beans, but by component-scan you are telling your spring application about the packages where it should search for Components and Beans.

You can verify this by declaring beans in packageA.subpackage1.* and packageA.subpackage2.*

but put

<context:component-scan base-package="packageA.subpackage1" />

put some logging in your beans and you won't see any logs coming from bean methods declared in packageA.subpackage2.* package.