基于工厂实现策略模式

1. 定义抽象策略类

public abstract class PayStrategy {

    // 验签
    public abstract boolean signParam(String sign);

    // 下单
    public abstract Map createOrder(String jsonOrder);

    // 支付回调(异步)
    public abstract String notifyResult(String xmlData);

}

2. 定义策略实现

@Component 指定策略类的别名。

AliPay

@Component("Ali")
public class AliPayService extends PayStrategy {

    @Override
    public boolean signParam(String sign) {
        System.out.println("this Ali sign ");
        return false;
    }

    @Override
    public Map createOrder(String jsonOrder) {
        System.out.println("this Ali createOrder ");
        return null;
    }

    @Override
    public String notifyResult(String xmlData) {
        System.out.println("this Ali notifyResult ");
        return null;
    }
}

WxPay

@Component("Wx")
public class WxPayService extends PayStrategy {

    @Override
    public boolean signParam(String sign) {
        System.out.println("this Wx sign ");
        return false;
    }

    @Override
    public Map createOrder(String jsonOrder) {
        System.out.println("this Wx createOrder ");
        return null;
    }

    @Override
    public String notifyResult(String xmlData) {
        System.out.println("this Wx notifyResult ");
        return null;
    }
}

3. 定义工厂

@Component
public class PayFactory {

    private Map payStrategy = new ConcurrentHashMap<>();

    @Autowired
    public PayFactory(Map payStrategy) {
        this.payStrategy = payStrategy;
    }

    
    public PayStrategy strategy(String type) {
        PayStrategy strategy = payStrategy.get(type);
        if (strategy == null) {
            throw new RuntimeException("选择策略未定义！");
        }
        return strategy;
    }

}

4. Controller

@RestController
@RequestMapping("/api/test")
public class PayInfoController {

    @Autowired
    private PayFactory payFactory;


    @ApiOperation(value = "创建订单",notes = "创建订单")
    @GetMapping("/createOrder")
    public String createOrder(String jsonOrder,String type) {
        Map order = payFactory.strategy(type).createOrder(jsonOrder);
        return order.toString();
    }
}

5.测试

http://localhost/car_pool_plat/api/test/createOrder?type=Wx

6. 项目层级