使用Java开发仓库管理系统的退货和退款处理功能

public class ReturnApplication {
    private int id;
    private int customerId;
    private int productId;
    private String reason;
    private int quantity;

    // 省略构造方法和getter/setter方法
}

public class RefundOrder {
    private String orderNumber;
    private double amount;
    private String paymentMethod;

    // 省略构造方法和getter/setter方法
}

public class WarehouseManagementSystem {
    public void processReturnApplication(ReturnApplication returnApplication) {
        // 根据退货申请处理退货逻辑
        // 更新退货库存信息等
    }

    public void generateRefundOrder(ReturnApplication returnApplication) {
        // 根据退货申请生成退款单
        RefundOrder refundOrder = new RefundOrder();
        refundOrder.setOrderNumber(UUID.randomUUID().toString());
        refundOrder.setAmount(returnApplication.getQuantity() * getProductPrice(returnApplication.getProductId()));
        refundOrder.setPaymentMethod("支付宝");

        // 将退款单信息保存到数据库
        saveRefundOrder(refundOrder);
    }

    private double getProductPrice(int productId) {
        // 根据商品ID查询商品价格
        // 这里省略具体实现
        return 0.0;
    }

    private void saveRefundOrder(RefundOrder refundOrder) {
        // 将退款单信息保存到数据库
        // 这里省略具体实现
    }
}

public class Main {
    public static void main(String[] args) {
        ReturnApplication returnApplication = new ReturnApplication();
        returnApplication.setId(1);
        returnApplication.setCustomerId(1);
        returnApplication.setProductId(1);
        returnApplication.setReason("商品破损");
        returnApplication.setQuantity(2);

        WarehouseManagementSystem warehouseManagementSystem = new WarehouseManagementSystem();
        warehouseManagementSystem.processReturnApplication(returnApplication);
        warehouseManagementSystem.generateRefundOrder(returnApplication);
    }
}