* 商品详情-推荐列表，设置最多三条限制

src/main/java/com/tdba/cxb/ares/api/repository/ProductMapper.java

@@ -26,7 +26,9 @@ public interface ProductMapper {
     /**
      * 商品列表
      * @param merId 商户ID
+     * @param limit 数量
      * @return
      */
-    List<ProductSimple> selectList(@Param("merId") Integer merId);
+    List<ProductSimple> selectList(@Param("merId") Integer merId,
+                                   @Param("limit") Integer limit);
 }

src/main/java/com/tdba/cxb/ares/api/service/ProductService.java

@@ -66,7 +66,7 @@ public class ProductService {
                         .withValueList(List.of(row.getAttr_values().split("-!-"))).build()).toList())
                 .withMerchant(merchantVo)
                 .withAttr_value(productAttrValueVo)
-                .withRecommend_list(productMapper.selectList(merchantVo.getId()))
+                .withRecommend_list(productMapper.selectList(merchantVo.getId(), 3))
                 .build();
     }
 

src/main/resources/mapper/ProductMapper.xml

@@ -38,5 +38,9 @@
           and status = 1
           and is_used = 1
           and mer_id = #{merId}
+
+        <if test="limit != null">
+            limit #{limit}
+        </if>
     </select>
 </mapper>