@Autowire on Controller as Extension always Null

[syifarahmat]

How can you make the Controller as an Extension use @autowire, because the injector variable via @autowire that is in the Controller is always null

my api

public interface ControllerExt extends ExtensionPoint { }

my controller

@Slf4j
@Extension
@RestController
@RequestMapping("/plugin")
public class PluginController implements ControllerExt {

    @Autowired
    private ApplicationContext appContext; /* this always null */

    @Autowired
    private PluginService serv; /* this always null */

    @GetMapping("/abc/greetMVC")
    public ResponseEntity<String> greetMVC(){
        if (appContext != null) {
            log.info(appContext.getId());
            for (String a : appContext.getBeanDefinitionNames()) {
                log.info("appContext " + a);
            }
        } else {
            log.info("appContext null............");
        }
        log.info(serv.test("test"));
        return ResponseEntity.ok().body("An endpoint defined by annotation in plugin : @greetMVC");
    }
......

Thank's.