diff --git a/designer-base/src/main/java/com/fr/design/gui/itree/filetree/FileNodeConstants.java b/designer-base/src/main/java/com/fr/design/gui/itree/filetree/FileNodeConstants.java
index 3bde026a25..b997b21d09 100644
--- a/designer-base/src/main/java/com/fr/design/gui/itree/filetree/FileNodeConstants.java
+++ b/designer-base/src/main/java/com/fr/design/gui/itree/filetree/FileNodeConstants.java
@@ -13,15 +13,16 @@ import java.util.Set;
  * Created by alex sung on 2019/7/23.
  */
 public class FileNodeConstants {
-    public static String[] SUPPORT_FILE_TYPES;
 
-    static {
+    private FileNodeConstants(){}
+
+    public static String[] getSupportFileTypes(){
         List<String> supportFileType = new ArrayList<>(Arrays.asList(FRContext.getFileNodes().getSupportedTypes()));
         //通过插件扩展的
         Set<App> apps = ExtraDesignClassManager.getInstance().getArray(App.MARK_STRING);
         for(App app: apps){
             supportFileType.addAll(Arrays.asList(app.defaultExtensions()));
         }
-        SUPPORT_FILE_TYPES = supportFileType.toArray(new String[0]);
+        return supportFileType.toArray(new String[0]);
     }
 }
diff --git a/designer-base/src/main/java/com/fr/design/gui/itree/filetree/TemplateFileTree.java b/designer-base/src/main/java/com/fr/design/gui/itree/filetree/TemplateFileTree.java
index b722cd44a4..b1f641b3b6 100644
--- a/designer-base/src/main/java/com/fr/design/gui/itree/filetree/TemplateFileTree.java
+++ b/designer-base/src/main/java/com/fr/design/gui/itree/filetree/TemplateFileTree.java
@@ -228,7 +228,7 @@ public class TemplateFileTree extends EnvFileTree {
         if (fileNodes == null) {
             fileNodes = new FileNode[0];
         }
-        Arrays.sort(fileNodes, new FileNodeComparator(FileNodeConstants.SUPPORT_FILE_TYPES));
+        Arrays.sort(fileNodes, new FileNodeComparator(FileNodeConstants.getSupportFileTypes()));
 
         return fileNodes;
     }