Spring 註解@Resource & @Autowired & @Service & @Component

組合1 @Resource+@Service：

    @Resource(name = "captchaService")
    private CaptchaService captchaService;

	@Service("captchaService")
	public class CaptchaServiceImpl implements CaptchaService {

組合2 @Autowired+@Service：

    @Autowired
    private CaptchaService captchaService;

	@Service("captchaService")
	public class CaptchaServiceImpl implements CaptchaService {

組合3 @Autowired+@Component：

    @Autowired
    private CaptchaService captchaService;

	@Component
	public class CaptchaServiceImpl implements CaptchaService {