diff --git a/__test__/FileSystem/file.test.ts b/__test__/FileSystem/file.test.ts
index 1514f61c7..961b640b9 100644
--- a/__test__/FileSystem/file.test.ts
+++ b/__test__/FileSystem/file.test.ts
@@ -80,6 +80,13 @@ test('xxx', () =>
 });
 
 
+
+CADFactory.RegisterObject(Line);
+let l = CADFactory.CreateObject("Line");
+console.log(l);
+
+l.ClassName //?
+
 // function createLine()
 // {
 //     for (let i = 0; i < 5000; i++)
diff --git a/src/DatabaseServices/FileSystem.ts b/src/DatabaseServices/FileSystem.ts
index 9e3238e3f..2a4464b9a 100644
--- a/src/DatabaseServices/FileSystem.ts
+++ b/src/DatabaseServices/FileSystem.ts
@@ -125,7 +125,6 @@ export class CADFactory
     }
 }
 
-
 //所有cad对象的基类
 export class CADObject
 {
@@ -344,7 +343,6 @@ export class CADFile
     }
 }
 
-
 export class AppendData extends CADObject
 {
     private cadFile: CADFile;
@@ -766,7 +764,7 @@ export class Line extends Entity
     FileIn(file: CADFile)
     {
         super.FileIn(file);
-        let ver = file.Read();
+        let ver = file.Read();//1
         this.startPoint.fromArray(file.Read());
         this.endPoint.fromArray(file.Read());
     }