春季：不包括依赖项的注入

Question

I know this is possible to exclude classes from a component-scan using exclude-filter .

The question is if it is possible to exclude the injection of a dependency in a class being injected.

For example, say I have the following class:

@Component
public class ServiceFactory
{
    @Resource
    private Service1 service1;

    @Resource
    private Service2 service2;

...

}

Now I would like to have ServiceFactory injected, service1 injected, but I would like to exclude service2 from the injection.

Of course I tried the following and it didn't work

<context:component-scan base-package="mypackage">
    <context:exclude-filter type="assignable" expression="...Service2" />
</context:component-scan>

Answer 1

In your specific case (where you don't want to inject in unit test, but want to inject in prod, but also don't want to create a dummy bean) you can use the @MockBean annotation

I think this is a better solution than to just not inject the bean, becuase that way you avoid NullPointerException