feature：运费模块 计算运费 保存新增模板 查询模板
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舒洪凡ShuHongFan
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package com.sl.ms.carriage.service.impl;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.util.ArrayUtil;
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import cn.hutool.core.util.EnumUtil;
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import cn.hutool.core.util.NumberUtil;
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import cn.hutool.core.util.StrUtil;
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import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
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import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
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import com.baomidou.mybatisplus.core.toolkit.Wrappers;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.sl.ms.base.api.common.AreaFeign;
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import com.sl.ms.carriage.domain.constant.CarriageConstant;
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import com.sl.ms.carriage.domain.dto.CarriageDTO;
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import com.sl.ms.carriage.domain.dto.WaybillDTO;
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import com.sl.ms.carriage.domain.enums.EconomicRegionEnum;
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import com.sl.ms.carriage.entity.CarriageEntity;
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import com.sl.ms.carriage.enums.CarriageExceptionEnum;
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import com.sl.ms.carriage.mapper.CarriageMapper;
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import com.sl.ms.carriage.service.CarriageService;
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import com.sl.ms.carriage.utils.CarriageUtils;
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import com.sl.transport.common.exception.SLException;
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import com.sl.transport.common.util.ObjectUtil;
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import org.jetbrains.annotations.NotNull;
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import org.springframework.stereotype.Service;
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import javax.annotation.Resource;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.stream.Collectors;
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@Service
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public class CarriageServiceImpl extends ServiceImpl<CarriageMapper, CarriageEntity> implements CarriageService {
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@Resource
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private AreaFeign areaFeign;
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private CarriageEntity carriageEntity;
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/**
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* 新增/修改运费模板
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*
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* @param carriageDto 新增/修改运费对象
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* 必填字段：templateType、transportType
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* 更新时传入id字段
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*/
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@Override
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public CarriageDTO saveOrUpdate(CarriageDTO carriageDto) {
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// 校验运费模板是否存在，如果不存在直接插入（查询条件：模板类型 运输类型 如果是修改排除当前id）
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LambdaQueryWrapper<CarriageEntity> queryWrapper = Wrappers.lambdaQuery();
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queryWrapper.eq(CarriageEntity::getTemplateType, carriageDto.getTemplateType());
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queryWrapper.eq(CarriageEntity::getTransportType, carriageDto.getTransportType());
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queryWrapper.ne(ObjectUtils.isNotEmpty(carriageDto.getId()), CarriageEntity::getId, carriageDto.getId());
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List<CarriageEntity> carriageEntityList = super.list(queryWrapper);
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// 如果没有重复的模板，可以直接插入或更新操作（DTo转entity 保存成功 entity转DTO）
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if (CollUtil.isEmpty(carriageEntityList)) {
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return saveOrUpdateCarriage(carriageDto);
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}
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// 如果存在重复模板，需要判断此次插入的是否为经济区互寄，非经济区互寄不可以重复
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if (ObjectUtil.notEqual(carriageDto.getTemplateType(), CarriageConstant.ECONOMIC_ZONE)) {
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throw new SLException(CarriageExceptionEnum.NOT_ECONOMIC_ZONE_REPEAT);
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}
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// 如果是京经济区互寄类型，需要进一步判断关联城市是否重复，通过集合取交集判断是否重复
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List<String> associatedCityList = carriageEntityList.stream().map(CarriageEntity::getAssociatedCity)
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.map(associatedCity -> StrUtil.splitToArray(associatedCity, ","))
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.flatMap(Arrays::stream)
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.collect(Collectors.toList());
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Collection<String> intersection = CollUtil.intersection(associatedCityList, carriageDto.getAssociatedCityList());
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if (CollUtil.isNotEmpty(intersection)) {
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throw new SLException(CarriageExceptionEnum.ECONOMIC_ZONE_CITY_REPEAT);
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}
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// 如果没有重复，可以新增或更新（DTO转Entity 保存成功 entity转DTO）
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return saveOrUpdateCarriage(carriageDto);
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}
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private CarriageDTO saveOrUpdateCarriage(CarriageDTO carriageDto) {
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CarriageEntity carriageEntity = CarriageUtils.toEntity(carriageDto);
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super.saveOrUpdate(carriageEntity);
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return CarriageUtils.toDTO(carriageEntity);
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}
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/**
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* 获取全部运费模板
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*
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* @return 运费模板对象列表
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*/
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@Override
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public List<CarriageDTO> findAll() {
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// 构造查询条件，按创建时间倒叙
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LambdaQueryWrapper<CarriageEntity> queryWrapper = Wrappers.lambdaQuery();
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queryWrapper.orderByDesc(CarriageEntity::getCreated);
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// 查询数据库
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List<CarriageEntity> list = super.list(queryWrapper);
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// 将结果转换为DTO类型，使用CarriageUtils工具类
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return list.stream().map(CarriageUtils::toDTO).collect(Collectors.toList());
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}
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/**
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* 运费计算
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*
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* @param waybillDTO 运费计算对象
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* @return 运费模板对象，不仅包含模板数据还包含：computeWeight、expense 字段
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*/
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@Override
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public CarriageDTO compute(WaybillDTO waybillDTO) {
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// 根据参数查找运费模板 调用findCarriage方法
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CarriageEntity carriage = findCarriage(waybillDTO);
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// 计算重量，最小重量为1KG，调用getComputedWeight方法
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double computeWeight = getComputeWeight(waybillDTO, carriage);
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// 计算运费 运费=首重价格 + （实际重量 - 1） * 续重加格
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double price = carriage.getFirstWeight() + (computeWeight - 1) * carriage.getContinuousWeight();
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// 结果保留一位小数
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BigDecimal expense = NumberUtil.round(price, 1);
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// 封装运费和计算重量到CarriageDTO，并返回
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CarriageDTO carriageDTO = CarriageUtils.toDTO(carriage);
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carriageDTO.setExpense(expense.doubleValue());
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carriageDTO.setComputeWeight(computeWeight);
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return carriageDTO;
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}
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/**
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* 计算重量
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* @param waybillDTO
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* @param carriage
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* @return
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*/
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private double getComputeWeight(WaybillDTO waybillDTO, CarriageEntity carriage) {
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// 计算体积,如果传入体积则不需要计算
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Integer volume = waybillDTO.getVolume();
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if (ObjectUtil.isEmpty(volume)) {
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try {
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volume = waybillDTO.getMeasureHigh() * waybillDTO.getMeasureLong() * waybillDTO.getMeasureWidth();
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} catch (Exception e) {
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volume = 0;
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}
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}
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// 计算体积重量 = 体积 / 轻抛系数 tips:使用NumberUtil工具类计算 保留一位小数
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BigDecimal volumeWeight = NumberUtil.div(volume, carriage.getLightThrowingCoefficient(), 1);
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// 重量取最大值 = 体积重量和实际重量 tips:使用NumberUtil工具类计算 保留一位小数
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double computeWeight = NumberUtil.max(volumeWeight, NumberUtil.round(waybillDTO.getWeight(), 1)).doubleValue();
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// 计算续重,规则:不满1kg,按1kg计费
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if (computeWeight <= 1) {
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return 1;
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}
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// 10KG一下续重以0.1kg计量保留1位小数
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if (computeWeight <= 10) {
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return computeWeight;
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}
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// 100KG 以上四舍五入取整,举例108.4kg按照108收费 108.5kg 按照109KG收费
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// tips:使用NumberUtil工具类计算
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if (computeWeight >= 100) {
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return NumberUtil.round(computeWeight, 0).doubleValue();
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}
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// 10-100kg续重以0.5kg计量保留1位小数
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int intValue = NumberUtil.round(computeWeight, 0, RoundingMode.DOWN).intValue();
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// 0.5为一个计量单位,举例:18.8kg按照19收费,18.4kg按照18.5收费,18.1kg按照18.5kg收费
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double sub = NumberUtil.sub(computeWeight, intValue);
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if (sub == 0) {
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return intValue;
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}
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if (sub < 0.5) {
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return NumberUtil.add(intValue, 0.5);
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}
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return NumberUtil.add(intValue, 0.5);
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}
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/**
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* 根据参数查找运费模板
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* @param waybillDTO
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* @return
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*/
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private CarriageEntity findCarriage(WaybillDTO waybillDTO) {
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Long senderCityId = waybillDTO.getSenderCityId();
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Long receiverCityId = waybillDTO.getReceiverCityId();
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// 如果 发件的城市id 和 收件的城市id相同，查询同城模板 调用findByTemplateType方法
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if (ObjectUtil.equal(senderCityId, receiverCityId)) {
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CarriageEntity carriageEntity = findByTemplateType(CarriageConstant.SAME_CITY);
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if (ObjectUtil.isNotEmpty(carriageEntity)) {
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return carriageEntity;
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}
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}
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// 如果没有查到或不是同城，则获取收寄地址同省id，使用AreaFeign结构查询
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Long senderProvinceId = areaFeign.get(senderCityId).getParentId();
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Long receiverProvinceId = areaFeign.get(receiverCityId).getParentId();
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// 如果 收发件的省份id相同，查询同省的模板，调用findByTemplate方法
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if (ObjectUtil.equal(senderProvinceId, receiverProvinceId)) {
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CarriageEntity carriageEntity = findByTemplateType(CarriageConstant.SAME_PROVINCE);
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if (ObjectUtil.isNotEmpty(carriageEntity)) {
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return carriageEntity;
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}
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}
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// 如果没有查到或不是同省，则查询是否为经济区互寄 调用findEconomicCarriage方法查询
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CarriageEntity carriageEntity = findEconomicCarriage(senderProvinceId, receiverProvinceId);
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if (ObjectUtil.isNotEmpty(carriageEntity)) {
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return carriageEntity;
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}
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// 如果没有查到或不是经济区互寄，直接查跨省运费模板
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carriageEntity = findByTemplateType(CarriageConstant.TRANS_PROVINCE);
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if (ObjectUtil.isNotEmpty(carriageEntity)) {
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return carriageEntity;
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}
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// 如果最后没有查到，直接抛自定义异常，提示模板未找到
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throw new SLException(CarriageExceptionEnum.NOT_FOUND);
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}
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/**
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* 查询是否为经济区互寄
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* @param senderProvinceId
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* @param receiverProvinceId
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* @return
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*/
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private CarriageEntity findEconomicCarriage(Long senderProvinceId, Long receiverProvinceId) {
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// 通过工具类EnumUtil 获取经济区城市配置枚举
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LinkedHashMap<String, EconomicRegionEnum> enumMap = EnumUtil.getEnumMap(EconomicRegionEnum.class);
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// 遍历所有经济区枚举值
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EconomicRegionEnum economicRegionEnum = null;
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for (EconomicRegionEnum regionEnum : enumMap.values()) {
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// 通过ArrayUtil工具类 判断发件网点 和 收件网点是否在同一经济区
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boolean containsAll = ArrayUtil.containsAll(regionEnum.getValue(), receiverProvinceId, senderProvinceId);
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// 如果在得到对应经济区枚举
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if (containsAll) {
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economicRegionEnum = regionEnum;
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break;
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}
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}
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// 循环遍历未发现所属经济区，方法直接返回null
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if (ObjectUtil.isNull(economicRegionEnum)) {
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return null;
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}
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// 如果有经济区 根据 模板类型=经济区，运输类型=普快 关联城市=枚举的code值 查询
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LambdaQueryWrapper<CarriageEntity> queryWrapper = Wrappers.lambdaQuery();
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queryWrapper.eq(CarriageEntity::getTemplateType, CarriageConstant.ECONOMIC_ZONE);
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queryWrapper.eq(CarriageEntity::getTransportType, economicRegionEnum.getCode());
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return super.getOne(queryWrapper);
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}
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/**
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* 根据模板类型查询模板，经济区互寄不通过该方法查询模板
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*
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* @param templateType 模板类型：1-同城寄，2-省内寄，4-跨省
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* @return 运费模板
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*/
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@Override
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public CarriageEntity findByTemplateType(Integer templateType) {
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// 根据模板类型，及运输类型 = CarriageConst.REGULAR_FAST查询模板
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LambdaQueryWrapper<CarriageEntity> queryWrapper = Wrappers.lambdaQuery();
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queryWrapper.eq(CarriageEntity::getTemplateType, templateType);
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queryWrapper.eq(CarriageEntity::getTransportType, CarriageConstant.REGULAR_FAST);
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return super.getOne(queryWrapper);
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}
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}
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@ -0,0 +1,46 @@
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package com.sl.ms.carriage.service.impl;
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import com.sl.ms.carriage.domain.dto.CarriageDTO;
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import com.sl.ms.carriage.domain.dto.WaybillDTO;
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import com.sl.ms.carriage.service.CarriageService;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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import javax.annotation.Resource;
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import java.util.List;
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import static org.junit.jupiter.api.Assertions.*;
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@SpringBootTest
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class CarriageServiceImplTest {
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@Resource
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private CarriageService carriageService;
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@Test
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void saveOrUpdate() {
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}
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@Test
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void findAll() {
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List<CarriageDTO> all = carriageService.findAll();
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all.forEach(System.out::println);
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}
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@Test
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void compute() {
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WaybillDTO waybillDTO = new WaybillDTO();
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waybillDTO.setReceiverCityId(161793L); //上海
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waybillDTO.setSenderCityId(2L); //北京
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waybillDTO.setWeight(0.8); //重量
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waybillDTO.setVolume(1); //体积
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CarriageDTO compute = this.carriageService.compute(waybillDTO);
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System.out.println(compute);
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}
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@Test
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void findByTemplateType() {
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}
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}
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