和

whole-estate/src/main/java/com/example/wholeestate/service/impl/BuildingServiceImpl.java

         buildingApartmentMapper.insert(building);
         for (BuildingImg img:buildingImgs){
             BuildingImg Images = new BuildingImg();
-            Images.setImgId(building.getBuildingId());
+            Images.setImgId(idGen.nextId() + "");
             Images.setBuildingId(building.getBuildingId());
             Images.setImgType(img.getImgType());
             Images.setUrl(img.getUrl());
 
         for (BuildingImg img:buildingImgs){
             BuildingImg Images = new BuildingImg();
-            Images.setImgId(img.getBuildingId());
+            Images.setImgId(idGen.nextId() + "");
             Images.setBuildingId(building.getBuildingId());
             Images.setImgType(img.getImgType());
             Images.setUrl(img.getUrl());