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src/main/java/com/huiju/estateagents/common/CommConstant.java

@@ -482,7 +482,7 @@ public class CommConstant {
     public static final String BUILDING_IMG_BANNER = "banner";
 
     /**
-     * 项目列表图
+     * 项目列表图（现在是用于楼盘封面图）
      */
     public static final String BUILDING_IMG_LIST = "list";
 

src/main/java/com/huiju/estateagents/service/impl/TaBuildingServiceImpl.java

@@ -108,6 +108,15 @@ public class TaBuildingServiceImpl extends ServiceImpl<TaBuildingMapper, TaBuild
 
                 List<TaBuildingImg> buildingImg = taBuildingImgMapper.selectList(queryWrapper);
                 taBuilding.setBuildingImg(buildingImg);
+
+                //查询封面当前图片
+                QueryWrapper<TaBuildingImg> queryListWrapper = new QueryWrapper<>();
+                queryListWrapper.eq("building_id", taBuilding.getBuildingId());
+                queryListWrapper.eq("img_type", CommConstant.BUILDING_IMG_LIST);
+                queryListWrapper.orderByAsc("create_date");
+
+                List<TaBuildingImg> buildingListImg = taBuildingImgMapper.selectList(queryListWrapper);
+                taBuilding.setBuildingListImg(buildingListImg);
             }
         }
 
@@ -620,6 +629,19 @@ public class TaBuildingServiceImpl extends ServiceImpl<TaBuildingMapper, TaBuild
         if (CollectionUtils.isNotEmpty(buildingList)) {
             for (TaBuilding build:buildingList) {
                 getBuildingAttaches(build);
+
+                // 兼容 3.0/3.5 版本（3.0/3.5 封面取的全是 buildingListImg 的第一张），因为在3.5.1新增了封面图
+
+                // 获取封面图
+                List<TaBuildingImg> buildingListImg = build.getBuildingListImg();
+                if (CollectionUtils.isNotEmpty(buildingList)) {
+                    // 把封面图写入到 BuildingImg 的第一张
+                    if (CollectionUtils.isNotEmpty(build.getBuildingImg())) {
+                        build.getBuildingImg().add(0, buildingListImg.get(0));
+                    }
+                }
+
+
             }
         }