Autowired 给静态对象ioc注入

构造方法注入

@PostConstruct

@Component
public class Test {
    private static UserService userService;
    @Autowired
    private UserService userService2;
    @PostConstruct
    public void beforeInit() {
        userService = userService2;
    }
    public static void test() {
        userService.test();
    }
}