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dl_admin/ruoyi-admin/src/main/java/com/ruoyi/busi/service/impl/BusiCategoryServiceImpl.java

@@ -75,17 +75,91 @@ public class BusiCategoryServiceImpl extends ServiceImpl<BusiCategoryMapper, Bus
                 item.setProdsJunior(idToProdsJunior.get(item.getId()));
             }
         });
+        List<BusiCategory> saveResult = computeProdsAll(categoryList);
+        updateBatchById(saveResult);
+
     }
 
+    /**
+     * 统计每个节点的递归产品数，并返回更新后的列表
+     *
+     * @param categoryList List<BusiCategory>
+     * @return java.util.List<com.ruoyi.busi.domain.BusiCategory>
+     * @author PQZ
+     * @date 15:07 2025/6/30
+     **/
+    private List<BusiCategory> computeProdsAll(List<BusiCategory> categoryList) {
+        if (categoryList == null || categoryList.isEmpty()) {
+            return categoryList;
+        }
+        // 构建id到节点的映射，便于查找
+        Map<String, BusiCategory> idToCategory = new HashMap<>();
+        for (BusiCategory category : categoryList) {
+            idToCategory.put(category.getId(), category);
+        }
 
+        // 构建树结构（找出根节点）
+        BusiCategory root = null;
+        for (BusiCategory category : categoryList) {
+            if (category.getParentId() == null) {
+                root = category;
+            }
+        }
+        // 递归统计
+        calculateProdsAll(root, categoryList);
+        return categoryList;
+    }
+
+    /**
+     * 递归计算子节点数据
+     *
+     * @param node       根节点
+     * @param categories 全部数据
+     * @return java.lang.Integer
+     * @author PQZ
+     * @date 15:24 2025/6/30
+     **/
+    private static Integer calculateProdsAll(BusiCategory node, List<BusiCategory> categories) {
+        if (node == null) {
+            return 0;
+        }
+        Integer sum = 0;
+        for (BusiCategory child : getChildren(node, categories)) {
+            sum += calculateProdsAll(child, categories);
+        }
+        Integer currentProdsJunior = (node.getProdsJunior() != null) ? node.getProdsJunior() : 0;
+        node.setProdsAll(sum + currentProdsJunior);
+        ;
+        return node.getProdsAll();
+    }
+
+    /**
+     * 获取某节点的子节点
+     *
+     * @param parent     父节点
+     * @param categories 所有栏目
+     * @return java.util.List<com.ruoyi.busi.domain.BusiCategory>
+     * @author PQZ
+     * @date 15:24 2025/6/30
+     **/
+    private static List<BusiCategory> getChildren(BusiCategory parent, List<BusiCategory> categories) {
+        List<BusiCategory> children = new ArrayList<>();
+        for (BusiCategory cat : categories) {
+            if (parent.getId().equals(cat.getParentId())) {
+                children.add(cat);
+            }
+        }
+        return children;
+    }
 
 
     /**
      * 生成树结构
-     * @author PQZ
-     * @date 14:11 2025/6/23
+     *
      * @param list 网站栏目列表
      * @return java.util.List<com.ruoyi.busi.vo.BusiCategoryVO>
+     * @author PQZ
+     * @date 14:11 2025/6/23
      **/
     private List<BusiCategoryVO> buildCategoryTree(List<BusiCategory> list) {
         // Map存放id到VO的映射