Question

I am using Spring 3 and also heavily utilize the well known @Autowire annotation. I would like to create a new annotation, let’s call it @Property that autowires Java properties from set by .property files or vm arguments.

Considering the following class

class A {

    @Property("my.a")
    private int a;
}

if the property my.a is present, the property A.a is set.

Is such an annotation maybe already existing? If not I am aiming to create one, as mentioned above. Are the utilities given by spring to achieve my goal? I think about creating a BeanPostProcessor …

Thanks for your hints!

Answer 1

There’s already such an annotation – @Value

You should just define a PropertyPlaceHolderConfigurer, and configure it to resolve system properties.