商品按标签过滤

mp-admin/src/main/java/com/qs/mp/web/controller/api/admin/GoodsMgrController.java

@@ -81,6 +81,9 @@ public class GoodsMgrController extends BaseApiController {
           new LambdaQueryWrapper<GoodsTagRel>().eq(GoodsTagRel::getTagId, queryParam.getTagId()));
       goodsIds = goodsTagRelList.stream().map(GoodsTagRel::getGoodsId)
           .collect(Collectors.toList());
+      if (CollectionUtils.isEmpty(goodsIds)) {
+        return getDataTable(new ArrayList<>());
+      }
     }
     startPage();
     QueryWrapper<Goods> queryWrapper = new QueryWrapper<Goods>();