fix

haoban-manage3-wx/src/main/java/com/gic/haoban/manage/web/controller/MaterialController.java

@@ -61,7 +61,7 @@ public class MaterialController extends WebBaseController{
 			List<MaterialCategoryDTO> sonList = map.get(materialVO.getCategoryParentId());
 			List<MaterialVO> sonVoList = EntityUtil.changeEntityListByJSON(MaterialVO.class, sonList);
 			materialVO.setList(sonVoList);
-			while(sonList != null){
+			while(sonList != null && sonList.size() > 0){
 				handerSonMaterial(sonVoList, map);
 			}
     	}