Conditionally load application context

Question

How can I load a spring-beans xml file from one out of two locations?

• System.getProperty("conf.dir") + "/context.xml" if it exist, otherwise fall back to
• classpath:/context.xml

This is what I started out with but I only want to load the first found context

@Configuration
@ImportResource({"${conf.dir}/context.xml", "classpath:/context.xml"})
public class AppConfig {
     @Autowire somethingFromAboveXmlContext;
}

I've looked into @Conditional but the solution becomes a bit non-intuitive.

@Configuration
@Conditional(AppContextCondition.class)
@ImportResource("${conf.dir}/context.xml")
@ImportResource("classpath:/context.xml")
public class AppConfig {
     @Autowire somethingFromAboveXmlContext;
}

Is there a manual approach to do what ImportResource does?

Answer 1

You can try this:

@Configuration
@ImportResource({"${conf.dir}/context.xml"})
public class AppConfig {
 static {
    if(!System.getProperties().contains("conf.dir")) {
        System.setProperty("conf.dir", "classpath:");
    }
 }
 @Autowire somethingFromAboveXmlContext;
}

I agree that it might not be a perfect solution, but it could work!