refactor(shop): 优化期刊推荐功能

- 修改期刊查询逻辑，先按标题去重，再按原始顺序取前 10 条记录 - 替换原有的分页查询方式，提高查询效率和准确性

refactor(shop): 优化期刊推荐功能
- 修改期刊查询逻辑，先按标题去重，再按原始顺序取前 10 条记录 - 替换原有的分页查询方式，提高查询效率和准确性
曾国涛
1 parent 752e4956
Showing 1 changed file with 12 additions and 1 deletions
shop/src/main/java/com/canrd/shop/service/impl/ProductServiceImpl.java
@@ -219,7 +219,18 @@ public class ProductServiceImpl extends ServiceImpl&lt;ProductMapper, ProductDO&gt; im
         List<Long> journalIds = journalCategoryRelations.stream().map(JournalCategoryRelation::getJournalId).collect(Collectors.toList());
         List<Journal> journals = journalService.lambdaQuery()
                 .in(Journal::getId, journalIds)
-                .page(new Page<>(1,10)).getRecords();
+                .list();
+        journals = journals.stream()
+                .collect(Collectors.toMap(
+                        Journal::getTitle,
+                        journal -> journal,
+                        (existing, replacement) -> existing,
+                        LinkedHashMap::new
+                ))
+                .values()
+                .stream()
+                .limit(10)
+                .collect(Collectors.toList());
         productVO.setJournals(journals);
         productVO.setPriceShow(productPriceShow);