@Secured in controller @Autowired not work

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I'm interested in why does not work @Autowired annotation (IoC), when I add @Secured annotation in my controller.

@Controller
@RequestMapping("/")
public class HelloController {

    @Autowired
    private ApplicationContext applicationContext;

    @ModelAttribute
    private String test() {
        return "test";
    }

    @Secured("hasRole('ROLE_USER')")
    @RequestMapping(value = "test", method = RequestMethod.GET)
    public String printWelcome(ModelMap model) {
        model.addAttribute("message", "Hello world!");
        return "hello";
    }
}

I found out that the problem is that when using @ModelAttribute method as private, then in runtime controller created as a proxy object in this case, fails spring Dependency Injection. In logs all clean, but attempts to access the property applicationContext causes NullPointerException.

I have never seen the recommendation (or rule) to create methods width @ModelAttribute annotation as public. Without @Secured annotations all good work.

I want to understand why this happens, it can bug?

Thanks.

asked 36 secs ago

Eremite

122