Spring 中的自定义注释覆盖参数

Question

Is it possible to overwrite the parameter values of an annotation used in a custom annotation?

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@SpringBootTest(classes = [HOW_TO_CHANGE_THESE])
@ComponentScan(basePackages = {[HOW_TO_CHANGE_THESE]})
@ActiveProfiles("testing")
public @interface IntegrationTest {
}

My intention was to reduce the number of annotations in my tests, while setting default values to all test of this type. I would like to use it like this:

@IntegrationTest(classes="...", basePackages="...")
class AbcTest {
}

Thanks in advance!

Answer 1

Yes, it is possible if you are using the Spring framework. It has a special @AliasFor annotation for this purpose:

@AliasFor is an annotation that is used to declare aliases for annotation attributes.

You can find more examples of its usage in the official documentation here or in this tutorial .

Also, there are details of how to use meta-annotations in the Spring Test Context in the official documentation here .

Your example with the usage of this annotation will look like this:

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@SpringBootTest
@ComponentScan
@ActiveProfiles("testing")
public @interface IntegrationTest {

    @AliasFor(annotation = ComponentScan.class, attribute = "basePackages")
    String[] basePackages() default {};

    @AliasFor(annotation = SpringBootTest.class, attribute = "classes")
    Class<?>[] classes() default {};
}