Spring choose bean implementation at runtime

Question

I\'m using Spring Beans with annotations and I need to choose different implementation at runtime.

@Service
public class MyService {
   public void test(){..         


        

Answer 1

You can move the bean injection into the configuration, as:

@Configuration
public class AppConfig {

    @Bean
    public MyService getMyService() {
        if(windows) return new MyServiceWin();
        else return new MyServiceLnx();
    }
}

Alternatively, you may use profiles windows and linux, then annotate your service implementations with the @Profile annotation, like @Profile("linux") or @Profile("windows"), and provide one of this profiles for your application.