if else太多怎么代替,太难维护?可以使用spring-plugin 插件系统

        org.springframework.plugin
            spring-plugin-core
        

@Data
public class PayRequestVO {

    private String channel;
    
    private String phone;
    
    private BigDecimal money;
}

public interface OrderPayOperationService extends Plugin {

    public String orderPay(PayRequestVO vo);
}

@Service
public class AlipayOrderPayOperationServiceImpl implements OrderPayOperationService {

    @Override
    public boolean supports(PayRequestVO delimiter) {
        return "alipay".equalsIgnoreCase(delimiter.getChannel());
    }

    @Override
    public String orderPay(PayRequestVO vo) {
        return "支付宝支付";
    }

}

@Service
public class WxOrderPayOperationServiceImpl implements OrderPayOperationService {

    @Override
    public boolean supports(PayRequestVO delimiter) {
        return false;
    }

    @Override
    public String orderPay(PayRequestVO vo) {
        return "微信支付";
    }

}

@SpringBootApplication //Spring Boot核心注解，用于开启自动配置
@EnablePluginRegistries({ OrderPayOperationService.class })
@Slf4j
public class DemoApplication {
    //程序可以直接在此启动

    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(DemoApplication.class, args);

        PluginRegistry orderPayOperationServicePluginRegistry = (PluginRegistry) context
                .getBean("orderPayOperationServiceRegistry");
        PayRequestVO vo = new PayRequestVO();
        vo.setChannel("alipay");
        vo.setPhone("1231231231");
        vo.setMoney(new BigDecimal(100));
        //获取插件
        OrderPayOperationService orderPayOperationService = orderPayOperationServicePluginRegistry.getPluginFor(vo);//getPlugins();
        //发起订单支付
        String orderPay = orderPayOperationService.orderPay(vo);
        log.info("支付返回:{}", orderPay);
    }

}