diff --git a/src/main/java/com/codesdream/ase/component/activity/FileSystem.java b/src/main/java/com/codesdream/ase/component/activity/FileSystem.java
index 659437d..f0fab48 100644
--- a/src/main/java/com/codesdream/ase/component/activity/FileSystem.java
+++ b/src/main/java/com/codesdream/ase/component/activity/FileSystem.java
@@ -137,7 +137,7 @@ public class FileSystem {
      * 根据id获取一个文件的条目，其中包含文件信息
      * @param id 要寻找条目的id
      */
-    public AppendixFile getFileData(int id)
+    public AppendixFile getFileData(int id)throws AppendixFileNotFoundException
     {
         Optional<AppendixFile> optionalAppendixFile = appendixFileService.findById(id);
         if(!optionalAppendixFile.isPresent())
diff --git a/src/main/java/com/codesdream/ase/exception/notfound/AppendixFileNotFoundException.java b/src/main/java/com/codesdream/ase/exception/notfound/AppendixFileNotFoundException.java
index 03f4784..0025243 100644
--- a/src/main/java/com/codesdream/ase/exception/notfound/AppendixFileNotFoundException.java
+++ b/src/main/java/com/codesdream/ase/exception/notfound/AppendixFileNotFoundException.java
@@ -2,7 +2,9 @@ package com.codesdream.ase.exception.notfound;
 
 import com.codesdream.ase.model.activity.AppendixFile;
 
-public class AppendixFileNotFoundException extends NotFoundException {
+import java.io.IOException;
+
+public class AppendixFileNotFoundException extends IOException {
     public int id;
     public int type;
     public static final int ID_NOT_FOUND = 1, FILE_NOT_fOUND = 2, STREAM_FAILURE = 3;
diff --git a/src/test/java/com/codesdream/ase/test/FileSystemTest.java b/src/test/java/com/codesdream/ase/test/FileSystemTest.java
index c80f8d9..01e66d6 100644
--- a/src/test/java/com/codesdream/ase/test/FileSystemTest.java
+++ b/src/test/java/com/codesdream/ase/test/FileSystemTest.java
@@ -1,6 +1,7 @@
 package com.codesdream.ase.test;
 
 import com.codesdream.ase.component.activity.FileSystem;
+import com.codesdream.ase.exception.notfound.AppendixFileNotFoundException;
 import com.codesdream.ase.model.activity.AppendixFile;
 import com.codesdream.ase.repository.activity.AppendixFileRespository;
 import com.codesdream.ase.service.AppendixFileService;
@@ -47,6 +48,38 @@ public class FileSystemTest {
         }
     }
 
+    @Test
+    public void wrongIDTest()
+    {
+        int id = 1;
+        try {
+            InputStream inputStream = fileSystem.getFile(id);
+        } catch (AppendixFileNotFoundException e) {
+            System.out.println(e.getLocalizedMessage());
+        }
+    }
+
+    @Test
+    public void fileNotExistErrorTest()
+    {
+        int id = 268;
+        try {
+            InputStream inputStream = fileSystem.getFile(id);
+        } catch (AppendixFileNotFoundException e) {
+            System.out.println(e.getLocalizedMessage());
+        }
+    }
+
+    @Test
+    public void refreshDataBaseTest()
+    {
+        fileSystem.databaseRefresh();
+    }
+    @Test
+    public void refreshDiskTest()
+    {
+        fileSystem.diskRefresh();
+    }
     @Test
     public void createFile()
     {
@@ -63,7 +96,12 @@ public class FileSystemTest {
         }
 
 
-        InputStream inputStream = fileSystem.getFile(id1);
+        InputStream inputStream = null;
+        try {
+            inputStream = fileSystem.getFile(id1);
+        } catch (AppendixFileNotFoundException e) {
+            e.printStackTrace();
+        }
         Scanner scanner = new Scanner(inputStream, "UTF-8");
         String text = scanner.useDelimiter("\\A").next();
         System.out.println(text);