nuttyreading-java/src/main/java/com/peanut/modules/book/service/ExpressFeeService.java

package com.peanut.modules.book.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.peanut.modules.book.entity.ExpressFee;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;

@Service
public interface ExpressFeeService extends IService<ExpressFee> {
    /**
     * 计算快递费
     *
     * @param expressCompanyCode 快递公司代码
     * @param weight             重量
     * @param regionCode         地区代码
     * @return BigDecimal 费用
     */
    BigDecimal calculateExpressFee(String expressCompanyCode, BigDecimal weight, String regionCode);
}