在运行时中选择2个Bean

public interface MyService {
    void execute();
}

@Service
@Qualifier("serviceA")
public class MyServiceImplA implements MyService {
    @Override
    public void execute() {
        System.out.println("Executing service A");
    }
}

@Service
@Qualifier("serviceB")
public class MyServiceImplB implements MyService {
    @Override
    public void execute() {
        System.out.println("Executing service B");
    }
}

@Service
public class MyController {
    private final MyService myService;

    // 使用构造器注入，并通过@Qualifier指定Bean
    public MyController(@Qualifier("serviceA") MyService myService) {
        this.myService = myService;
    }

    public void doSomething() {
        myService.execute();
    }
}

@Autowired
private ApplicationContext context;

public void dynamicBeanSelection(boolean condition) {
    MyService service = condition ? context.getBean("serviceA", MyService.class) : context.getBean("serviceB", MyService.class);
    service.execute();
}