diff --git a/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java b/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java
index 196589b..3cddfd2 100644
--- a/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java
+++ b/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java
@@ -88,7 +88,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
 
     public void getPathOrDir(String path, List<MusicData> list) {
         File files = new File(path);
-        for (File file : files.listFiles()) {
+        for (File file : Objects.requireNonNull(files.listFiles())) {
             if (file.isFile()) {
                 list.add(getMetadata(file));
             } else {
@@ -144,6 +144,9 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
         list.addAll(main);
 
         list.sort((o1, o2) -> {
+            if("返回".equals(o2.getTitle())){
+                return 1;
+            }
             Comparator<Object> compare = Collator.getInstance(Locale.CHINA);
             return compare.compare(o1.getTitle(),o2.getTitle());
         });
@@ -173,7 +176,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
         File file = new File(path);
         com.yutou.nas.utils.Log.i("扫描文件:" + path);
         if (file.isDirectory()) {
-            for (File listFile : file.listFiles()) {
+            for (File listFile : Objects.requireNonNull(file.listFiles())) {
                 if (listFile.isDirectory()) {
                     MusicData data = new MusicData();
                     data.setTitle(listFile.getName());
@@ -201,7 +204,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
                 }
             } catch (Exception e) {
                 e.printStackTrace();
-                QQBotManager.getInstance().sendMessage("音乐文件添加失败:" + data.toString());
+                QQBotManager.getInstance().sendMessage("音乐文件添加失败:" + data);
             }
 
         }
@@ -250,27 +253,27 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
             MusicData data = new MusicData();
             try {
                 data.setAlbum(tag.getFirst(FieldKey.ALBUM));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             try {
                 data.setArtist(tag.getFirst(FieldKey.ARTIST));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             try {
                 data.setArtistSort(tag.getFirst(FieldKey.ARTIST_SORT));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             try {
                 data.setComment(tag.getFirst(FieldKey.COMMENT));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             try {
                 data.setComposer(tag.getFirst(FieldKey.COMPOSER));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             try {
                 data.setDiscNo(tag.getFirst(FieldKey.DISC_NO));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             try {
                 if (StringUtils.isEmpty(tag.getFirst(FieldKey.TITLE))) {
@@ -283,11 +286,11 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
             }
             try {
                 data.setTrack(tag.getFirst(FieldKey.TRACK));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             try {
                 data.setYear(tag.getFirst(FieldKey.YEAR));
-            } catch (Exception e) {
+            } catch (Exception ignored) {
             }
             data.setFile(file.getAbsolutePath());
             data.setIsdir(file.isDirectory() ? 1 : 0);
@@ -437,7 +440,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
             data.setIsdir(file.isDirectory() ? 1 : 0);
             data.setLastdir(file.getParentFile().getParent());
             data.setMd5(Tools.getFileMD5(file));
-            QQBotManager.getInstance().sendMessage("添加音乐文件失败:\n" + data.toString() + "\n" + Tools.getExceptionString(e));
+            QQBotManager.getInstance().sendMessage("添加音乐文件失败:\n" + data + "\n" + Tools.getExceptionString(e));
         }
         return data;
     }
@@ -536,7 +539,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
     @Override
     public byte[] readImage(String path) throws Exception {
         File file = new File(path);
-        AudioFile audioFile = null;
+        AudioFile audioFile;
         audioFile = AudioFileIO.read(file);
         Tag tag = audioFile.getTag().or(NullTag.INSTANCE);
         byte[] bytes = tag.getFirstArtwork().or(NullArtwork.INSTANCE).getBinaryData();
@@ -552,7 +555,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
         example.createCriteria().andMd5EqualTo(md5);
         List<MusicData> list=musicDataDao.selectByExample(example,delFile);
         Log.i("Music Size",list.size());
-        if(list!=null&&!list.isEmpty()){
+        if(!list.isEmpty()){
             Log.i("Music File", list.get(0).toString());
             return new File(list.get(0).getFile());
         }