商品中心—1.B端建品和C端缓存的技术文档二

大纲

1.商品中心的专业术语

2.商品中心的基本业务系统

3.商品中心整体架构设计以及运行流程

4.商品B端—商品编码生成逻辑

5.商品B端—商品核心数据模型

6.商品B端—转换建品请求数据为商品模型数据

7.商品B端—商品建品时商品编号补全与审核配置

8.商品B端—商品审核前的草稿数据保存逻辑

9.商品B端—不需审核的建品流程持久化逻辑

10.商品B端—审核工单分页列表和商品草稿查询

11.商品B端—商品审核时的敏感字段diff计算逻辑

12.商品B端—对草稿中的商品进行审核的逻辑

13.商品B端—商品属性+买手+品类的数据维护

14.商品C端—通用缓存读写组件的实现逻辑

15.商品C端—接口代码实现逻辑

10.商品B端—审核工单分页列表和商品草稿查询

//审批服务
@DubboService(version = "1.0.0", interfaceClass = AuditApi.class, retries = 0)
public class AuditApiImpl implements AuditApi {@Autowiredprivate AuditService auditService;@Overridepublic JsonResult<PageResult<AuditInfoDTO>> getTodoList(QueryTodoListRequest request) {try {//审核工单分页列表PageResult<AuditInfoDTO> todoList = auditService.getTodoList(request);return JsonResult.buildSuccess(todoList);} catch (ProductBizException e) {log.error("biz error: request={}", JSON.toJSONString(request), e);return JsonResult.buildError(e.getErrorCode(), e.getErrorMsg());} catch (Exception e) {log.error("system error: request={}", JSON.toJSONString(request), e);return JsonResult.buildError(e.getMessage());}}@Overridepublic JsonResult<DraftDetailDTO> getDraftDetail(QueryDraftRequest request) {try {//商品草稿查询DraftDetailDTO draftDetailDTO = auditService.getDraftDetail(request);return JsonResult.buildSuccess(draftDetailDTO);} catch (ProductBizException e) {log.error("biz error: request={}", JSON.toJSONString(request), e);return JsonResult.buildError(e.getErrorCode(), e.getErrorMsg());} catch (Exception e) {log.error("system error: request={}", JSON.toJSONString(request), e);return JsonResult.buildError(e.getMessage());}}...
}@Service
public class AuditServiceImpl implements AuditService {...//获取审核的代办列表@Overridepublic PageResult<AuditInfoDTO> getTodoList(QueryTodoListRequest queryTodoListRequest) {//获取用户审核角色AuditorListConfigDO auditor = productAuditRepository.getAuditorRuleByUserId(queryTodoListRequest.getUserId());//返回待办列表return productAuditRepository.pageResult(queryTodoListRequest, auditor);}//查询草稿详情信息@Overridepublic DraftDetailDTO getDraftDetail(QueryDraftRequest queryDraftRequest) {//草稿详情信息DraftDetailDTO draftDetailDTO = productAuditRepository.getDraftDetail(queryDraftRequest.getTicketId());//构建需要比较不同的字段数据buildDiffChangeField(draftDetailDTO);return draftDetailDTO;}//构建需要比较不同的字段的数据private void buildDiffChangeField(DraftDetailDTO draftDetailDTO) {//草稿主表信息DraftMainDTO draftMainDTO = draftDetailDTO.getDraftMainDTO();//修改后的商品数据FullProductData fullProductData = JSON.parseObject(draftMainDTO.getFeatures(), FullProductData.class);//商品新增时，item版本号是0，草稿表中的版本号是item表中的版本号加1//所以此时判断草稿表中的版本号是小于等于1表示新增数据if (draftMainDTO.getVersionId() <= 1) {buildAddDiff(fullProductData, draftDetailDTO);} else {buildUpdateDiff(fullProductData, draftDetailDTO);}}...
}//商品审核 资源管理
@Repository
public class ProductAuditRepository {...//获取用户审核角色public AuditorListConfigDO getAuditorRuleByUserId(Integer userId) {LambdaQueryWrapper<AuditorListConfigDO> queryWrapper = Wrappers.lambdaQuery();queryWrapper.eq(AuditorListConfigDO::getAuditorId, userId);AuditorListConfigDO auditorListConfigDO = auditorListConfigMapper.selectOne(queryWrapper);//判断是否查询到对应的权限信息if (Objects.isNull(auditorListConfigDO)) {throw new ProductBizException(AuditExceptionCode.USER_AUDIT_RULE_NULL);}return auditorListConfigDO;}//获取用户可审核的详细列表public PageResult<AuditInfoDTO> pageResult(QueryTodoListRequest queryTodoListRequest, AuditorListConfigDO auditor) {LambdaQueryWrapper<AuditInfoDO> queryWrapper = Wrappers.lambdaQuery();queryWrapper.eq(AuditInfoDO::getTicketStatus, AuditStatusEnum.UNAUDITED.getCode());Page<AuditInfoDO> page = new Page<>(queryTodoListRequest.getPageNum(), queryTodoListRequest.getPageSize());Integer auditorRole = auditor.getAuditorRole();//不是拥有所有审核权限，则增加限定条件，指定是建品审核或者是价格审核if (!Objects.equals(AuditorRoleEnum.ADMIN.getCode(), auditorRole)) {queryWrapper.eq(AuditInfoDO::getTicketType, auditorRole);}//根据角色查询待办列表return auditConverter.converterPageResult(auditInfoMapper.selectPage(page, queryWrapper));}//查询草稿明细信息public DraftDetailDTO getDraftDetail(Long ticketId) {//1.查询草稿主表信息DraftMainDTO draftMainDTO = auditConverter.convertDTO(getByTicketId(ticketId));//2.查询草稿图片列表信息List<DraftImgDTO> draftImgDTOS = getByDraft(draftMainDTO);//返回草稿的主体信息return new DraftDetailDTO(draftMainDTO, draftImgDTOS);}...
}

11.商品B端—商品审核时的敏感字段diff计算逻辑

审核时需要把Item和SKU的敏感字段的diff值显示出来，方便审核员审核。

@Service
public class AuditServiceImpl implements AuditService {...//查询草稿详情信息@Overridepublic DraftDetailDTO getDraftDetail(QueryDraftRequest queryDraftRequest) {//草稿详情信息DraftDetailDTO draftDetailDTO = productAuditRepository.getDraftDetail(queryDraftRequest.getTicketId());//构建需要比较不同的字段数据buildDiffChangeField(draftDetailDTO);return draftDetailDTO;}//构建需要比较不同的字段的数据private void buildDiffChangeField(DraftDetailDTO draftDetailDTO) {//草稿主表信息DraftMainDTO draftMainDTO = draftDetailDTO.getDraftMainDTO();//修改后的商品数据FullProductData fullProductData = JSON.parseObject(draftMainDTO.getFeatures(), FullProductData.class);//商品新增时，item版本号是0，草稿表中的版本号是item表中的版本号加1//所以此时判断草稿表中的版本号是小于等于1表示新增数据if (draftMainDTO.getVersionId() <= 1) {buildAddDiff(fullProductData, draftDetailDTO);} else {buildUpdateDiff(fullProductData, draftDetailDTO);}}//填充新增的 商品差异变化信息private void buildAddDiff(FullProductData fullProductData, DraftDetailDTO draftDetailDTO) {//item信息ItemInfoDO itemInfoDO = fullProductData.getItemInfoDO();List<DiffValue> itemDiffValues = DiffFieldUtil.buildDiffField(itemInfoDO, null, itemDiffFields);//skuList diff 存放Map集合Map<String, List<DiffValue>> skuDiffFieldsMap = null;//sku信息List<SkuInfoDO> skuInfoDOList = fullProductData.getSkuInfoDOList();if (!CollectionUtils.isEmpty(skuInfoDOList)) {skuDiffFieldsMap = new HashMap<>(skuInfoDOList.size());for (SkuInfoDO skuInfoDO : skuInfoDOList) {List<DiffValue> skuDiffValues = DiffFieldUtil.buildDiffField(skuInfoDO, null, skuDiffFields);if (!CollectionUtils.isEmpty(skuDiffValues)) {skuDiffFieldsMap.put(skuInfoDO.getSkuId(), skuDiffValues);}}}//填充商品数据变更的差异信息buildDiffInfo(itemDiffValues, skuDiffFieldsMap, draftDetailDTO);}//填充商品数据变更的差异信息private void buildDiffInfo(List<DiffValue> itemDiffValues, Map<String, List<DiffValue>> skuDiffFieldsMap, DraftDetailDTO draftDetailDTO) {//item变更字段if (!CollectionUtils.isEmpty(itemDiffValues)) {draftDetailDTO.setItemDiffFields(itemDiffValues);}//sku变更字段if (!CollectionUtils.isEmpty(skuDiffFieldsMap)) {draftDetailDTO.setSkuDiffFields(skuDiffFieldsMap);}}//填充修改的 商品差异变化信息private void buildUpdateDiff(FullProductData fullProductData, DraftDetailDTO draftDetailDTO) {//item信息ItemInfoDO itemInfoDO = fullProductData.getItemInfoDO();//先查询修改前itemInfoDO和修改前的skuInfoDOList，再比较变更值ItemInfoDO oldItemInfoDO = productInfoRepository.getItemByItemId(itemInfoDO.getItemId());List<DiffValue> itemDiffValues = DiffFieldUtil.buildDiffField(itemInfoDO, oldItemInfoDO, itemDiffFields);List<SkuInfoDO> oldSkuInfoDOList = productInfoRepository.listSkuByItemId(itemInfoDO.getItemId());List<SkuInfoDO> skuInfoDOList = fullProductData.getSkuInfoDOList();List<DiffValue> skuDiffValues;//skuList diff 存放Map集合Map<String, List<DiffValue>> skuDiffFieldsMap = new HashMap<>();//旧的商品集合转换Map<String, SkuInfoDO> oldMap = oldSkuInfoDOList.stream().collect(Collectors.toMap(SkuInfoDO::getSkuId, e -> e));for (SkuInfoDO skuInfoDO : skuInfoDOList) {if (oldMap.containsKey(skuInfoDO.getSkuId())) {SkuInfoDO oldSkuInfoDO = oldMap.get(skuInfoDO.getSkuId());skuDiffValues = DiffFieldUtil.buildDiffField(skuInfoDO, oldSkuInfoDO, skuDiffFields);if (!CollectionUtils.isEmpty(skuDiffValues)) {skuDiffFieldsMap.put(skuInfoDO.getSkuId(), skuDiffValues);}}}//填充修改的商品信息buildDiffInfo(itemDiffValues, skuDiffFieldsMap, draftDetailDTO);}...
}public class DiffFieldUtil {public static List<DiffValue> buildDiffField(Object newObj, Object oldObj, List<String> diffFields) {//oldObj为null表示新增，如果newObj与oldObj类型不同，则不处理if (!Objects.isNull(oldObj) && !newObj.getClass().equals(oldObj.getClass())) {return null;}List<DiffValue> diffValues = new ArrayList<>();Field[] newObjFields = newObj.getClass().getDeclaredFields();Field[] oldObjFields = null;if (!Objects.isNull(oldObj)) {oldObjFields = oldObj.getClass().getDeclaredFields();}for (int i = 0; i < newObjFields.length; i++) {Field newObjField = newObjFields[i];//需要比较当前字段String fieldName = newObjField.getName();if (diffFields.contains(fieldName)) {try {Object newValue = newObjField.get(fieldName);if (Objects.isNull(oldObjFields) || !Objects.equals(oldObjFields[i].get(fieldName), newValue)) {DiffValue diffValue = new DiffValue();diffValue.setField(fieldName);diffValue.setOldValue(Objects.isNull(oldObjFields) ? null : oldObjFields[i].get(fieldName));diffValue.setNewValue(newValue);diffValues.add(diffValue);}} catch (IllegalAccessException e) {log.error("获取字段值失败", e);}}}return diffValues;}
}

12.商品B端—对草稿中的商品进行审核的逻辑

//审批服务
@DubboService(version = "1.0.0", interfaceClass = AuditApi.class, retries = 0)
public class AuditApiImpl implements AuditApi {@Autowiredprivate AuditService auditService;...@Overridepublic JsonResult<ExecAuditDTO> execAudit(AuditRequest request) {try {ExecAuditDTO execAuditDTO = auditService.execAudit(request);return JsonResult.buildSuccess(execAuditDTO);} catch (ProductBizException e) {log.error("biz error: request={}", JSON.toJSONString(request), e);return JsonResult.buildError(e.getErrorCode(), e.getErrorMsg());} catch (Exception e) {log.error("system error: request={}", JSON.toJSONString(request), e);return JsonResult.buildError(e.getMessage());}}
}//审核请求入参
@Data
public class AuditRequest extends BaseEntity implements Serializable {//工单idprivate Long ticketId;//审核状态 1-通过 3-拒绝private Integer auditStatus;//拒绝原因private String rejectReason;//操作人private Integer operatorUser;
}@Service
public class AuditServiceImpl implements AuditService {...//执行审核@Transactional@Overridepublic ExecAuditDTO execAudit(AuditRequest auditRequest) {//验证是否有可以审核，并填充审核信息AuditInfoDTO auditInfoDTO = productAuditRepository.checkAudit(auditRequest);//执行审核execGoodsAudit(auditRequest, auditInfoDTO);//处理审核的信息DB变更productAuditRepository.updateAudit(auditRequest, auditInfoDTO);return new ExecAuditDTO(Boolean.TRUE);}//商品审核private void execGoodsAudit(AuditRequest auditRequest, AuditInfoDTO auditInfoDTO) {DraftMainDTO draftMainDTO = auditInfoDTO.getDraftMainDTO();Integer ticketType = auditInfoDTO.getTicketType();//如果是审批通过，则需要更改正式表的数据if (Objects.equals(auditRequest.getAuditStatus(), AuditStatusEnum.PASS.getCode())) {FullProductData fullProductData = JSON.parseObject(draftMainDTO.getFeatures(), FullProductData.class);//建品审核if (Objects.equals(ticketType, AuditTypeEnum.GOODS.getCode())) {fullProductData.getItemInfoDO().setVersionId(draftMainDTO.getVersionId());//产品信息入库；版本号小于等于1，表示新增，否则表示修改if (fullProductData.getItemInfoDO().getVersionId() <= 1) {productInfoRepository.saveItemInfo(fullProductData);} else {productInfoRepository.updateItemInfo(fullProductData);}} else if (Objects.equals(ticketType, AuditTypeEnum.PRICE.getCode())) {SkuInfoDO skuInfoDO = fullProductData.getSkuInfoDOList().get(0);productInfoRepository.saveRecord(skuInfoDO);}}}...
}//商品审核 资源管理
@Repository
public class ProductAuditRepository {...//验证是否可审核，并返回审核对象public AuditInfoDTO checkAudit(AuditRequest auditRequest) {Long ticketId = auditRequest.getTicketId();//查询审核工单AuditInfoDO auditInfoDO = auditInfoMapper.selectById(ticketId);if (Objects.isNull(auditInfoDO)) {throw new ProductBizException(AuditExceptionCode.USER_AUDIT_INFO_NULL);}AuditInfoDTO auditInfoDTO = auditConverter.convertAuditDTO(auditInfoDO);//获取审核工单的详情DraftMainDO draftMainDO = getByTicketId(ticketId);if (Objects.isNull(draftMainDO)) {throw new ProductBizException(AuditExceptionCode.USER_AUDIT_INFO_NULL.getErrorCode(), "审核工单详情信息不存在");}//验证权限是否满足AuditorListConfigDO auditorListConfigDO = getAuditorRuleByUserId(auditRequest.getOperatorUser());if (Objects.isNull(auditorListConfigDO)) {throw new ProductBizException(AuditExceptionCode.USER_AUDIT_RULE_NULL);}//不是超级审核权限，并且拥有的审核权限与审核类型不一致if (!Objects.equals(AuditorRoleEnum.ADMIN.getCode(), auditorListConfigDO.getAuditorRole())&& !Objects.equals(draftMainDO.getTicketType(), auditorListConfigDO.getAuditorRole())) {throw new ProductBizException(ProductErrorCodeEnum.AUDIT_ERROR);}auditInfoDTO.setDraftMainDTO(auditConverter.convertDTO(draftMainDO));return auditInfoDTO;}//修改审核信息public void updateAudit(AuditRequest auditRequest, AuditInfoDTO auditInfoDTO) {DraftMainDTO draftMainDTO = auditInfoDTO.getDraftMainDTO();//软删除草稿表数据deleteDraftMain(draftMainDTO);//修改审核表信息updateAudit(auditInfoDTO, auditRequest);//新增审核历史记录saveAuditHistory(auditRequest);}//逻辑删除草稿表数据private void deleteDraftMain(DraftMainDTO draftMainDTO) {DraftMainDO draftMainDO = auditConverter.converterDO(draftMainDTO);draftMainDO.setDelFlag(DelFlagEnum.DISABLED.getCode());//草稿表数据删除int count = draftMainMapper.updateById(draftMainDO);if (count <= 0) {throw new ProductBizException(AuditExceptionCode.AUDIT_SQL);}}//修改审核表信息private void updateAudit(AuditInfoDTO auditInfoDTO, AuditRequest auditRequest) {AuditInfoDO auditInfoDO = auditConverter.convertAuditDO(auditInfoDTO);auditInfoDO.setTicketStatus(auditRequest.getAuditStatus());auditInfoDO.setUpdateUser(auditRequest.getOperatorUser());auditInfoDO.setUpdateTime(new Date());int count = this.auditInfoMapper.updateById(auditInfoDO);if (count <= 0) {throw new ProductBizException(AuditExceptionCode.AUDIT_SQL);}}//新增审核历史记录private void saveAuditHistory(AuditRequest auditRequest) {AuditHistoryDO auditHistoryDO = auditConverter.converterHistoryDO(auditRequest);auditHistoryDO.initCommon();int count = this.auditHistoryMapper.insert(auditHistoryDO);if (count <= 0) {throw new ProductBizException(AuditExceptionCode.AUDIT_SQL);}}...
}

13.商品B端—商品属性 + 买手 + 品类的数据维护

(1)商品属性数据维护

(2)买手数据维护

(3)品类数据维护

(1)商品属性数据维护

//新增/编辑规格请求入参
@Data
public class AttributeRequest implements Serializable {//规格键信息private AttributeKeyRequest attributeKeyRequest;//规格值信息private List<AttributeValueRequest> attributeValueRequests;//操作人@NotNull(message = "操作人[operateUser]不能为空")private Integer operateUser;@Datapublic static class AttributeKeyRequest implements Serializable {//属性key编码private String keyCode;//属性key名称private String keyName;//扩展字段private String features;//排序private Integer keySort;//删除标记（1-有效，0-删除）private Integer delFlag;}@Datapublic static class AttributeValueRequest implements Serializable {//属性key编码private String keyCode;//属性value名称private String valueName;//扩展字段private String features;//排序private Integer valueSort;//删除标记（1-有效，0-删除）private Integer delFlag;}
}//规格服务
@Service
public class AttributeServiceImpl implements AttributeService {@Resourceprivate AttributeRepository attributeRepository;//新增/编辑规格键值接口@Transactional(rollbackFor = Exception.class)@Overridepublic AttributeResultDTO saveAttribute(AttributeRequest attributeRequest) {//入参检查this.checkAttributeRequestParam(attributeRequest);//保存规格信息attributeRepository.saveAttribute(attributeRequest);//返回结果return new AttributeResultDTO(Boolean.TRUE);}//入参检查private void checkAttributeRequestParam(AttributeRequest attributeRequest) {ParamCheckUtil.checkObjectNonNull(attributeRequest);//规格键信息AttributeRequest.AttributeKeyRequest attributeKeyRequest = attributeRequest.getAttributeKeyRequest();ParamCheckUtil.checkObjectNonNull(attributeKeyRequest);//规格值信息List<AttributeRequest.AttributeValueRequest> attributeValueRequests = attributeRequest.getAttributeValueRequests();ParamCheckUtil.checkCollectionNonEmpty(attributeValueRequests);}...
}

(2)买手数据维护

//新增/编辑买手请求入参
@Data
public class BuyerRequest implements Serializable {private Long id;//真实姓名private String realName;//花名private String roster;//买手图像private String imageUrl;//介绍private String description;//负责的品类IDprivate String categoryId;//删除标记（1-有效，0-删除）private Integer delFlag;//操作人@NotNull(message = "操作人[operateUser]不能为空")private Integer operateUser;
}//买手服务
@Service
public class BuyerServiceImpl implements BuyerService {@Resourceprivate BuyerRepository buyerRepository;@Overridepublic BuyerResultDTO saveBuyer(BuyerRequest buyerRequest) {//保存买手信息buyerRepository.saveOrUpdate(buyerRequest);//返回结果信息return new BuyerResultDTO(Boolean.TRUE);}@Overridepublic BuyerListDTO getBuyerInfo(QueryBuyerListRequest queryBuyerListRequest) {List<BuyerInfoDTO> buyerInfoDTOS = buyerRepository.listBuyerInfo(queryBuyerListRequest);//返回信息return new BuyerListDTO(buyerInfoDTOS);}@Overridepublic PageResult<BuyerInfoDTO> getBuyerInfoPage(QueryBuyerPageRequest queryBuyerPageRequest) {return buyerRepository.pageResult(queryBuyerPageRequest);}
}

(3)品类数据维护

//新增/编辑品类请求入参
@Data
public class CategoryRequest implements Serializable {//idprivate Long id;//品类名称@NotNull(message = "品类名称[categoryName]不能为空")private String categoryName;//父ID（一级类目父ID为0）private Integer parentId;//排序（正整数，数字越小越靠前）@NotNull(message = "排序[categorySort]不能为空")private Integer categorySort;//图标iconprivate String icon;//目录是否展示（1-是，0-否）private Integer showMark;//是否是末级类目@NotNull(message = "末级类目[lastFlag]不能为空")private Integer lastFlag;//渠道（1-每日生鲜、2-美团、3-饿了么、4-淘鲜达、5-招商银行）@NotNull(message = "渠道[channel]不能为空")private Integer channel;//卖家类型（1-自营，2-POP）@NotNull(message = "卖家类型[sellerType]不能为空")private Integer sellerType;//扩展字段private String feature;//删除标记（1-有效，0-删除）private Integer delFlag;//操作人@NotNull(message = "操作人[operateUser]不能为空")private Integer operateUser;
}//商品品类信息
@Service
public class CategoryInfoServiceImpl implements CategoryInfoService {@Resourceprivate CategoryRepository categoryRepository;@Resourceprivate CategoryInfoConverter categoryInfoConverter;//查询品类树@Overridepublic List<CategoryInfoTreeDTO> selectTree(QueryCategoryRequest categoryQueryRequest) {return categoryInfoConverter.converterTreeList(categoryRepository.selectTree(categoryQueryRequest));}//查询某个层级下的品类树(默认不带条件查询父类)@Overridepublic List<CategoryInfoDTO> selectChild(QueryCategoryRequest categoryQueryRequest) {//查询某个层级的品类树List<CategoryInfoDO> categoryInfoList = categoryRepository.listBy(categoryQueryRequest);//返回查询结果return categoryInfoConverter.converterList(categoryInfoList);}//保存/修改品类信息@Overridepublic CategoryResultDTO saveCategory(CategoryRequest categoryRequest) {//保存品类树categoryRepository.saveOrUpdate(categoryRequest);//返回结果信息return new CategoryResultDTO(Boolean.TRUE);}//查询品类信息列表@Overridepublic List<CategoryInfoDTO> selectListByLike(QueryCategoryListRequest categoryListRequest) {return categoryInfoConverter.converterList(categoryRepository.selectListByLike(categoryListRequest));}
}

14.商品C端—通用缓存读写组件的实现逻辑

下面以获取前台类目为例，去说明先读缓存再读DB的通用缓存读写组件的逻辑。

FrontCategoryCache继承自Redis缓存抽象类AbstractRedisStringCache，这个抽象类中会有一个模版方法listRedisStringData()，该方法可以根据关键字来批量获取数据，并且会调用通用缓存读写组件的listRedisStringDataByCache()方法。

其中，listRedisStringDataByCache()方法需要传入两个方法：一个是获取Redis的key的方法，一个是从DB查询数据的方法。

//商品前台类目服务
@DubboService(version = "1.0.0", interfaceClass = FrontCategoryApi.class, retries = 0)
public class FrontCategoryApiImpl implements FrontCategoryApi {@Resourceprivate FrontCategoryCache frontCategoryStringSource;@Resourceprivate FrontCategoryConverter frontCategoryConverter;//基于通用缓存读写组件，去获取前台类目@Overridepublic JsonResult<List<FrontCategoryDTO>> getFrontCategory(FrontCategoryQuery frontCategoryQuery) {//入参校验checkParams(frontCategoryQuery);List<String> frontCategoryIdList = Arrays.asList(String.valueOf(frontCategoryQuery.getFrontCategoryId()));//基于通用缓存读写组件，先读缓存再读DB来获取前台类目Optional<List<FrontCategoryBO>> optional = frontCategoryStringSource.listRedisStringData(frontCategoryIdList);if (!optional.isPresent()) {JsonResult.buildSuccess();}List<FrontCategoryDTO> frontCategoryDTOList = frontCategoryConverter.converterFrontCategoryList(optional.get());return JsonResult.buildSuccess(frontCategoryDTOList);}...
}//Redis(String)缓存抽象类：<DO>是数据对象、<BO>是缓存对象
public abstract class AbstractRedisStringCache<DO, BO> {@Resourceprivate RedisReadWriteManager redisReadWriteManager;...//根据关键字批量获取数据public Optional<List<BO>> listRedisStringData(List<String> keyList) {if (CollectionUtils.isEmpty(keyList)) {return Optional.empty();}//下面会调用通用缓存读写组件RedisReadWriteManager的listRedisStringDataByCache()方法//getBOClass()需要子类实现//getPendingRedisKey()也需要子类实现//最后的匿名函数中，也使用了多个需要子类实现的方法：getTableFieldsMap()、getStringDatabase()、convertDO2BO()Optional<List<BO>> boListOpt = redisReadWriteManager.listRedisStringDataByCache(keyList, getBOClass(), this::getRedisKey, (key) -> {Map<String, Object> tableFieldsMap = getTableFieldsMap(key);Optional<DO> doOpt;try {doOpt = getStringDatabase().getTableData(tableFieldsMap, queryType());} catch (Exception e) {log.error("根据关键字批量获取数据出现异常 key={},paramMap={}", key, tableFieldsMap, e);return Optional.empty();}if (!doOpt.isPresent()) {return Optional.empty();}List<BO> boList = convertDO2BO(Arrays.asList(doOpt.get()));if (CollectionUtils.isEmpty(boList)) {return Optional.empty();}return Optional.of(boList.get(0));});return boListOpt;}//获取Redis keyprotected String getRedisKey(String key) {return String.format(getPendingRedisKey(), key);}//获取BO对象的Classprotected abstract Class<BO> getBOClass();//获取待处理的Redis Keyprotected abstract String getPendingRedisKey();//关联表字段值protected abstract Map<String, Object> getTableFieldsMap(String key);//获取DB读取对象protected abstract RedisStringDatabase<DO> getStringDatabase();//DO转BOprotected abstract List<BO> convertDO2BO(Collection<DO> doList);...
}@Service("frontCategoryStringSource")
public class FrontCategoryCache extends AbstractRedisStringCache<FrontCategoryDO, FrontCategoryBO> {@Resourceprivate FrontCategoryStringDatabase frontCategoryStringDatabase;...//获取BO对象的Class@Overrideprotected Class<FrontCategoryBO> getBOClass() {return FrontCategoryBO.class;}//获取待处理的Redis Key@Overrideprotected String getPendingRedisKey() {return AbstractRedisKeyConstants.FRONT_CATEGORY_STRING;}@Overrideprotected RedisStringDatabase<FrontCategoryDO> getStringDatabase() {return frontCategoryStringDatabase;}//DO转BO@Overrideprotected List<FrontCategoryBO> convertDO2BO(Collection<FrontCategoryDO> frontCategoryDOList) {if (CollectionUtils.isEmpty(frontCategoryDOList)) {return null;}List<FrontCategoryBO> result = Lists.newArrayList();for (FrontCategoryDO frontCategoryDO : frontCategoryDOList) {FrontCategoryBO frontCategoryBO = new FrontCategoryBO();BeanUtils.copyProperties(frontCategoryDO, frontCategoryBO);result.add(frontCategoryBO);}return result;}...
}@Service("frontCategoryStringDatabase")
public class FrontCategoryStringDatabase extends AbstractRedisStringDatabase<FrontCategoryDO> {...//获取表数据@Overridepublic Optional<FrontCategoryDO> getTableData(Map<String, Object> tableFieldsMap, String queryType) {if (tableFieldsMap.containsKey(ID)) {QueryWrapper<FrontCategoryDO> queryWrapper = new QueryWrapper<>();queryWrapper.in("ID", Sets.newHashSet(Integer.valueOf(tableFieldsMap.get(ID).toString())));List<FrontCategoryDO> frontCategoryDOList = frontCategoryMapper.selectList(queryWrapper);if (!CollectionUtils.isEmpty(frontCategoryDOList)) {FrontCategoryDO doBase = frontCategoryDOList.get(0);if (Objects.equals(DelFlagEnum.EFFECTIVE.getCode(), doBase.getDelFlag())) {return Optional.of(doBase);}}return Optional.empty();}throw new UnsupportedOperationException();}...
}//通用缓存读写组件
@Service
public class RedisReadWriteManager {@Resourceprivate RedisCache redisCache;@Resourceprivate RedisLock redisLock;...//批量获取缓存数据//@param keyList             关键字列表//@param clazz               需要将缓存JSON转换的对象//@param getRedisKeyFunction 获取Redis key的方法//@param getDbFuction        获取数据源对象的方法//@return java.util.Optional<java.util.List<T>>public <T> Optional<List<T>> listRedisStringDataByCache(List<String> keyList, Class<T> clazz, Function<String, String> getRedisKeyFunction, Function<String, Optional<T>> getDbFuction) {try {List<T> list = Lists.newArrayList();List<String> pendingKeyList = keyList.stream().distinct().collect(toList());List<String> redisKeyList = pendingKeyList.stream().map(getRedisKeyFunction).distinct().collect(toList());List<String> cacheList = redisCache.mget(redisKeyList);for (int i = 0; i < cacheList.size(); i++) {String cache = cacheList.get(i);//过滤无效缓存if (EMPTY_OBJECT_STRING.equals(cache)) {continue;}if (StringUtils.isNotBlank(cache)) {T t = JSON.parseObject(cache, clazz);list.add(t);continue;}//缓存没有则读库Optional<T> optional = getRedisStringDataByDb(pendingKeyList.get(i), getRedisKeyFunction, getDbFuction);if (optional.isPresent()) {list.add(optional.get());}}return CollectionUtils.isEmpty(list) ? Optional.empty() : Optional.of(list);} catch (Exception e) {log.error("批量获取缓存数据异常 keyList={},clazz={}", keyList, clazz, e);throw e;}}//查询数据库表的数据并赋值到Redispublic <T> Optional<T> getRedisStringDataByDb(String key, Function<String, String> getRedisKeyFunction, Function<String, Optional<T>> getDbFuction) {if (StringUtils.isEmpty(key) || Objects.isNull(getDbFuction)) {return Optional.empty();}try {//使用分布式锁if (!redisLock.lock(key)) {return Optional.empty();}String redisKey = getRedisKeyFunction.apply(key);Optional<T> optional = getDbFuction.apply(key);if (!optional.isPresent()) {//把空对象暂存到RedisredisCache.setex(redisKey, EMPTY_OBJECT_STRING, RedisKeyUtils.redisKeyRandomTime(INT_EXPIRED_ONE_DAY, TimeUnit.HOURS, NUMBER_24));log.warn("发生缓存穿透 redisKey={}", redisKey);return optional;}//把表数据对象存到RedisredisCache.setex(redisKey, JSON.toJSONString(optional.get()), RedisKeyUtils.redisKeyRandomTime(INT_EXPIRED_SEVEN_DAYS));log.info("表数据对象存到redis redisKey={}, data={}", redisKey, optional.get());return optional;} finally {redisLock.unlock(key);}}...
}

15.商品C端—接口代码实现逻辑

(1)获取前台类目下的商品列表

(2)获取商品信息和详情接口

(1)获取前台类目下的商品列表

FrontCategoryRelationCache和SkuCollectCache这两个缓存类，都继承自抽象类AbstractRedisStringCache，并使用了通用缓存读写组件RedisReadWriteManager。

//商品前台类目服务
@DubboService(version = "1.0.0", interfaceClass = FrontCategoryApi.class, retries = 0)
public class FrontCategoryApiImpl implements FrontCategoryApi {@Resourceprivate FrontCategoryRelationCache frontCategoryRelationCache;@Resourceprivate SkuCollectCache skuCollectCache;@Resourceprivate FrontCategoryConverter frontCategoryConverter;...//获取前台类目下的商品列表@Overridepublic JsonResult<FrontCategorySkuRelationDTO> getFrontCategorySkuList(FrontCategoryQuery frontCategoryQuery) {//入参校验checkParams(frontCategoryQuery);List<String> frontCategoryIdList = Arrays.asList(String.valueOf(frontCategoryQuery.getFrontCategoryId()));//查询前端类目下关联的商品sku信息Optional<List<FrontCategoryRelationBO>> optiona = frontCategoryRelationCache.listRedisStringData(frontCategoryIdList);if (!optiona.isPresent()) {JsonResult.buildSuccess();}//填充商品的sku信息List<FrontCategoryRelationBO> frontCategoryRelationBOS = optiona.get();List<String> skuIdList = frontCategoryRelationBOS.stream().map(FrontCategoryRelationBO::getParticipateId).collect(Collectors.toList());Optional<List<SkuInfoBO>> optional = skuCollectCache.listRedisStringData(skuIdList);if (!optional.isPresent()) {JsonResult.buildSuccess();}List<Object> skuList = frontCategoryConverter.converterObjectList(optional.get());return JsonResult.buildSuccess(new FrontCategorySkuRelationDTO(skuList));}...
}@Service("frontCategoryRelationCache")
public class FrontCategoryRelationCache extends AbstractRedisStringCache<FrontCategoryRelationDO, FrontCategoryRelationBO> {@Resourceprivate FrontCategoryRelationStringDatabase frontCategoryRelationStringDatabase;@Overrideprotected Class<FrontCategoryRelationBO> getBOClass() {return FrontCategoryRelationBO.class;}@Overrideprotected String getPendingRedisKey() {return AbstractRedisKeyConstants.FRONT_CATEGORY_ITEM_RELATION_SET;}@Overrideprotected RedisStringDatabase<FrontCategoryRelationDO> getStringDatabase() {return frontCategoryRelationStringDatabase;}...
}@Service("frontCategoryRelationStringDatabase")
public class FrontCategoryRelationStringDatabase extends AbstractRedisStringDatabase<FrontCategoryRelationDO> {...@Overridepublic Optional<FrontCategoryRelationDO> getTableData(Map<String, Object> tableFieldsMap, String queryType) {if (tableFieldsMap.containsKey(FRONT_CATEGORY_ID)) {List<FrontCategoryRelationDO> frontCategoryDOList = frontCategoryMapper.queryFrontCategoryList(Arrays.asList(Long.valueOf(tableFieldsMap.get(FRONT_CATEGORY_ID).toString())));if (!CollectionUtils.isEmpty(frontCategoryDOList)) {FrontCategoryRelationDO doBase = frontCategoryDOList.get(0);if (Objects.equals(DelFlagEnum.EFFECTIVE.getCode(), doBase.getDelFlag())) {return Optional.of(doBase);}}return Optional.empty();}throw new UnsupportedOperationException();}...
}//Redis(string)缓存抽象类：<DO>数据对象、<BO>缓存对象
public abstract class AbstractRedisStringCache<DO, BO> {@Resourceprivate RedisReadWriteManager redisReadWriteManager;...//根据关键字批量获取数据public Optional<List<BO>> listRedisStringData(List<String> keyList) {if (CollectionUtils.isEmpty(keyList)) {return Optional.empty();}//下面会调用通用缓存读写组件RedisReadWriteManager的listRedisStringDataByCache()方法//getBOClass()需要子类实现//getPendingRedisKey()也需要子类实现//最后的匿名函数中，也使用了多个需要子类实现的方法：getTableFieldsMap()、getStringDatabase()、convertDO2BO()Optional<List<BO>> boListOpt = redisReadWriteManager.listRedisStringDataByCache(keyList, getBOClass(), this::getRedisKey, (key) -> {Map<String, Object> tableFieldsMap = getTableFieldsMap(key);Optional<DO> doOpt;try {doOpt = getStringDatabase().getTableData(tableFieldsMap, queryType());} catch (Exception e) {log.error("根据关键字批量获取数据出现异常 key={},paramMap={}", key, tableFieldsMap, e);return Optional.empty();}if (!doOpt.isPresent()) {return Optional.empty();}List<BO> boList = convertDO2BO(Arrays.asList(doOpt.get()));if (CollectionUtils.isEmpty(boList)) {return Optional.empty();}return Optional.of(boList.get(0));});return boListOpt;}//获取Redis keyprotected String getRedisKey(String key) {return String.format(getPendingRedisKey(), key);}...
}

(2)获取商品信息和详情接口

ItemCollectCache和ProductDetailCache这两个缓存类，都继承自抽象类AbstractRedisStringCache，并使用了通用缓存读写组件RedisReadWriteManager。

@DubboService(version = "1.0.0", interfaceClass = ProductCollectApi.class, retries = 0)
public class ProductCollectApiImpl implements ProductCollectApi {@Resourceprivate ItemCollectCache itemCollectCache;@Resourceprivate ProductDetailCache productDetailCache;...//根据itemId或skuId获取商品信息@Overridepublic JsonResult<Map<String, ProductCollectDTO>> getProductCollect(ProductCollectQuery productCollectQuery) {if (Objects.isNull(productCollectQuery) || CollectionUtils.isEmpty(productCollectQuery.getProductIdList())) {return JsonResult.buildError(ProductErrorCodeEnum.PARAM_ERROR.getErrorCode(), ProductErrorCodeEnum.PARAM_ERROR.getErrorMsg());}if (productCollectQuery.getProductIdList().size() > BaseConstants.LIMIT_100) {return JsonResult.buildError(ProductErrorCodeEnum.PRODUCT_LIMIT_ERROR.getErrorCode(), ProductErrorCodeEnum.PRODUCT_LIMIT_ERROR.getErrorMsg());}Set<String> productIdSet = Sets.newHashSet(productCollectQuery.getProductIdList());Set<String> itemIdSet = productIdSet.stream().filter(NumberUtils::isItem).collect(Collectors.toSet());List<ItemInfoBO> itemInfoBOList = Lists.newArrayList();if (!CollectionUtils.isEmpty(itemIdSet)) {Optional<List<ItemInfoBO>> itemOptional = itemCollectCache.listRedisStringData(Lists.newArrayList(itemIdSet));if (itemOptional.isPresent()) {itemInfoBOList = itemOptional.get();}}//获取sku相关信息ProductBO productBO = buildSkuInfoList(productCollectQuery, itemInfoBOList);return JsonResult.buildSuccess(buildProductCollect(productBO.getItemInfoBOList(), productBO.getSkuInfoBOList(), productBO.getPriceBOList()));}//根据skuId获取商品详情@Overridepublic JsonResult<ProductDetailDTO> getProductDetail(ProductDetailQuery productDetailQuery) {if (Objects.isNull(productDetailQuery) || Objects.isNull(productDetailQuery.getSkuId())) {return JsonResult.buildError(ProductErrorCodeEnum.PARAM_ERROR.getErrorCode(), ProductErrorCodeEnum.PARAM_ERROR.getErrorMsg());}List<String> productIdList = Arrays.asList(productDetailQuery.getSkuId());Optional<List<ProductDetailBO>> optional = productDetailCache.listRedisStringData(productIdList);if (optional.isPresent()) {List<ProductDetailBO> productDetailBOS = optional.get();ProductDetailDTO productDetailDTO = productDetailConverter.converterDetail(productDetailBOS.get(0));return JsonResult.buildSuccess(productDetailDTO);}return JsonResult.buildSuccess();}...
}