diff --git a/pav-server/src/main/java/com/palnet/comn/utils/AirspaceUtils.java b/pav-server/src/main/java/com/palnet/comn/utils/AirspaceUtils.java
index 5eb872a..5fb7fcf 100644
--- a/pav-server/src/main/java/com/palnet/comn/utils/AirspaceUtils.java
+++ b/pav-server/src/main/java/com/palnet/comn/utils/AirspaceUtils.java
@@ -162,8 +162,9 @@ public class AirspaceUtils {
         for (Resource resource : resources) {
             try (InputStream is = resource.getInputStream()) {
                 InputStreamReader isr = new InputStreamReader(is, StandardCharsets.UTF_8);
+                BufferedReader br = new BufferedReader(isr);
                 JSONParser jsonParser = new JSONParser();
-                JSONObject jsonObject = (JSONObject) jsonParser.parse(isr);
+                JSONObject jsonObject = (JSONObject) jsonParser.parse(br);
                 List<FeatureInfo> convertFeatureInfos = convertGeoJsonToGeometry(jsonObject);
                 featureInfos.addAll(convertFeatureInfos);
             } catch (Exception e) {
@@ -171,38 +172,6 @@ public class AirspaceUtils {
             }
         }
 
-//        ClassPathResource resource = new ClassPathResource(CLASS_PATH);
-//        List<File> geoJsonFiles = new ArrayList<>();
-//        try {
-//            File folder = resource.getFile();
-//            File[] files = folder.listFiles();
-//            for (File file : files) {
-//                if (file.isFile() && file.getName().endsWith("elev.json")) {
-//                    log.debug(">>> {}", file.getName());
-//                    geoJsonFiles.add(file);
-//                }
-//            }
-//        } catch (IOException e) {
-//            throw new RuntimeException(e);
-//        }
-
-
-//        List<FeatureInfo> featureInfos = new ArrayList<>();
-//        for (File file : geoJsonFiles) {
-//            try (InputStreamReader isr = new InputStreamReader(new FileInputStream(file), StandardCharsets.UTF_8)) {
-//                JSONParser jsonParser = new JSONParser();
-//                JSONObject jsonObject = (JSONObject) jsonParser.parse(isr);
-//                List<FeatureInfo> convertFeatureInfos = convertGeoJsonToGeometry(jsonObject);
-//                featureInfos.addAll(convertFeatureInfos);
-//            } catch (Exception e) {
-//                log.error("ERROR : ", e);
-//                featureInfos = null;
-//            }
-//            if (featureInfos != null && featureInfos.isEmpty()) {
-//                featureInfos = null;
-//            }
-//        }
-
         this.airspaces = featureInfos;
     }