Spring not injecting @value annotation in property

June 22, 2022

I have the following class:

@Component
public class Scheduler {

    @Value("${build.version}")
    private String buildVersion;

    public void test() {
         System.out.println(this.buildVersion);
    }

}

I am calling the method test() from a controller:

@RestController
public class ApiController {

    @GetMapping("/status")
    public StatusResponse status() {
        Scheduler scheduler = new Scheduler();
        scheduler.update();
    }

However spring is not injecting the build.version value even though the class has a @Component annotation.

I am using the same property in a controller and it works fine.

What am I doing wrong?

>Solution :

Try out this way, as you create instance with new instead of rely on Spring object managing(Inversion of control)

@RestController
public class ApiController {


   private Scheduler scheduler;

   @Autowired
   public ApiController(Scheduler scheduler) {
      this.scheduler = scheduler 
   }

   @GetMapping("/status")
   public StatusResponse status() {
      scheduler.update();
  }
}