spring shell component 无法使用 autowired 注入？

@ShellComponent
public class SeederCommand extends Command {

    @Autowired
    private UserRepository userRepository;

    @ShellMethod(key = {"seed"}, value = "数据填充方法")
    public void run() {
        System.out.println(new Gson().toJson(this.userRepository.findAll()));

    }
}

提示 userRepository 是 null。报错