canrd-main / canrud-mall-services · Commits

Commit 2fa199e4fc6fccf2b9fd2f155ba080bffa1e6c92

Authored by boyang
1 parent a11bc16b
build: skipped

fix: 二级分类递归查一级分类

Inline Side-by-side
Showing 1 changed file with 66 additions and 23 deletions
shop/src/main/java/com/canrd/shop/service/impl/ProductServiceImpl.java
  View file @2fa199e
... ... @@ -137,36 +137,49 @@ public class ProductServiceImpl extends ServiceImpl<ProductMapper, ProductDO> im
137 137 .eq(Productcategoryrelation::getProductId, productQueryVO.getId())
138 138 .list();
139 139 List<String> categoryIds = productcategoryrelations.stream().map(Productcategoryrelation::getCategoryId).collect(Collectors.toList());
  140 +
140 141 if (CollectionUtils.isNotEmpty(categoryIds)) {
  142 + // 查询第一级分类
141 143 List<ProductCategoryDO> productCategories = categoryService.lambdaQuery()
142 144 .in(ProductCategoryDO::getId, categoryIds)
143 145 .eq(ProductCategoryDO::getParentId, "33ba6943c8bf4ca082614f299865341c")
144 146 .list();
145   - ProductCategoryDO firstCategory = productCategories.get(0);
146   - List<ProductCategoryDO> productCategories2 = categoryService.lambdaQuery()
147   - .in(ProductCategoryDO::getId, categoryIds)
148   - .eq(ProductCategoryDO::getParentId, firstCategory.getId())
149   - .list();
150   -// ProductCategoryDO secondCategory = productCategories2.get(0);
151   - ProductCategoryDO secondCategory = productCategories2.stream()
152   - .filter(category -> !"Not specified".equals(category.getName()))
153   - .findFirst()
154   - .orElse(productCategories2.get(0)); // 如果找不到，使用列表第一个元素
155   - // 从 functionService 获取 functionId
156   - List<ProductFunctionDO> functions = functionService.getFirstFunction(productVO.getId());
157   - ProductFunctionDO selectedFunction = null;
158   - if (functions != null && functions.size() > 0) {
159   - selectedFunction = functions.stream()
160   - .filter(function -> !"Not specified".equals(function.getName()))
  147 + ProductCategoryDO firstCategory = null;
  148 + if (productCategories.isEmpty()) {
  149 + firstCategory = findParentCategory(categoryIds, "33ba6943c8bf4ca082614f299865341c");
  150 + } else {
  151 + firstCategory = productCategories.get(0);
  152 + }
  153 +
  154 + if (firstCategory != null) {
  155 + // 查询第二级分类
  156 + List<ProductCategoryDO> productCategories2 = categoryService.lambdaQuery()
  157 + .in(ProductCategoryDO::getId, categoryIds)
  158 + .eq(ProductCategoryDO::getParentId, firstCategory.getId())
  159 + .list();
  160 + ProductCategoryDO secondCategory = productCategories2.stream()
  161 + .filter(category -> !"Not specified".equals(category.getName()))
161 162 .findFirst()
162   - .orElse(functions.get(0)); // 如果找不到，使用列表第一个元素
  163 + .orElse(productCategories2.isEmpty() ? null : productCategories2.get(0)); // 如果找不到，使用列表第一个元素或 null
  164 +
  165 + // 获取功能信息
  166 + List<ProductFunctionDO> functions = functionService.getFirstFunction(productVO.getId());
  167 + ProductFunctionDO selectedFunction = null;
  168 + if (CollectionUtils.isNotEmpty(functions)){
  169 + selectedFunction = functions.stream()
  170 + .filter(function -> !"Not specified".equals(function.getName()))
  171 + .findFirst()
  172 + .orElse(functions.get(0)); // 如果找不到，使用列表第一个元素
  173 + }
  174 +
  175 + // 构建面包屑信息
  176 + ProductCrumbsVO productCrumbsVO = ProductCrumbsVO.builder()
  177 + .category1(firstCategory.getName())
  178 + .category2(secondCategory != null ? secondCategory.getName() : null)
  179 + .function(selectedFunction != null ? selectedFunction.getName() : null)
  180 + .build();
  181 + productVO.setProductCrumbsVO(productCrumbsVO);
163 182 }
164   - ProductCrumbsVO productCrumbsVO = ProductCrumbsVO.builder()
165   - .category1(firstCategory.getName()) //
166   - .category2(secondCategory.getName())
167   - .function(selectedFunction.getName())
168   - .build();
169   - productVO.setProductCrumbsVO(productCrumbsVO);
170 183 }
171 184  
172 185 List<EbCategorysRelation> cateRelations = ebCategorysRelationService.lambdaQuery()
... ... @@ -198,6 +211,36 @@ public class ProductServiceImpl extends ServiceImpl&lt;ProductMapper, ProductDO&gt; im
198 211 return ServerResult.success(productVO);
199 212 }
200 213  
  214 + //查找一级分类
  215 + private ProductCategoryDO findParentCategory(List<String> categoryIds, String targetParentId) {
  216 + for (String categoryId : categoryIds) {
  217 + // 查询当前 categoryId 的数据
  218 + ProductCategoryDO currentCategory = categoryService.lambdaQuery()
  219 + .eq(ProductCategoryDO::getId, categoryId)
  220 + .one();
  221 + if (currentCategory != null) {
  222 + // 如果当前分类的 parentId 等于目标 parentId，返回当前分类
  223 + if (targetParentId.equals(currentCategory.getParentId())) {
  224 + return currentCategory;
  225 + }
  226 + // 否则递归查找 parentId 的分类
  227 + ProductCategoryDO parentCategory = categoryService.lambdaQuery()
  228 + .eq(ProductCategoryDO::getId, currentCategory.getParentId())
  229 + .one();
  230 + if (parentCategory != null) {
  231 + ProductCategoryDO foundCategory = findParentCategory(
  232 + Collections.singletonList(parentCategory.getId()),
  233 + targetParentId
  234 + );
  235 + if (foundCategory != null) {
  236 + return foundCategory;
  237 + }
  238 + }
  239 + }
  240 + }
  241 + return null; // 如果未找到符合条件的分类，返回 null
  242 + }
  243 +
201 244 /**
202 245 * 分页查询
203 246 *
... ...