diff --git a/app/src/main/java/xyz/fycz/myreader/backup/BackupAndRestore.java b/app/src/main/java/xyz/fycz/myreader/backup/BackupAndRestore.java
index 05698c1..b53a1a4 100644
--- a/app/src/main/java/xyz/fycz/myreader/backup/BackupAndRestore.java
+++ b/app/src/main/java/xyz/fycz/myreader/backup/BackupAndRestore.java
@@ -5,6 +5,7 @@ import xyz.fycz.myreader.common.APPCONST;
 import xyz.fycz.myreader.entity.Setting;
 import xyz.fycz.myreader.greendao.entity.Book;
 import xyz.fycz.myreader.greendao.service.BookService;
+import xyz.fycz.myreader.util.IOUtils;
 import xyz.fycz.myreader.util.utils.FileUtils;
 import java.io.*;
 import java.util.ArrayList;
@@ -119,20 +120,7 @@ public class BackupAndRestore {
             e.printStackTrace();
             return false;
         } finally {
-            if (br != null) {
-                try {
-                    br.close();
-                } catch (IOException e) {
-                    e.printStackTrace();
-                }
-            }
-            if (ois != null) {
-                try {
-                    ois.close();
-                } catch (IOException e) {
-                    e.printStackTrace();
-                }
-            }
+            IOUtils.close(br, ois);
         }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/xyz/fycz/myreader/common/APPCONST.java b/app/src/main/java/xyz/fycz/myreader/common/APPCONST.java
index 4d679bc..b399d81 100644
--- a/app/src/main/java/xyz/fycz/myreader/common/APPCONST.java
+++ b/app/src/main/java/xyz/fycz/myreader/common/APPCONST.java
@@ -10,10 +10,10 @@ import java.io.File;
 
 public class APPCONST {
 
-    public static String publicKey = "";//服务端公钥
+    public static String publicKey = "fyds1.0";//服务端公钥
     public static String privateKey;//app私钥
     public final static String s = "11940364935628058505";
-    public static final String KEY = "";
+    public static final String KEY = "readerByFengyue";
 
     public static final String ALARM_SCHEDULE_MSG = "alarm_schedule_msg";
 
diff --git a/app/src/main/java/xyz/fycz/myreader/ui/home/bookcase/BookcasePresenter.java b/app/src/main/java/xyz/fycz/myreader/ui/home/bookcase/BookcasePresenter.java
index 25fa1e6..4282c19 100644
--- a/app/src/main/java/xyz/fycz/myreader/ui/home/bookcase/BookcasePresenter.java
+++ b/app/src/main/java/xyz/fycz/myreader/ui/home/bookcase/BookcasePresenter.java
@@ -538,14 +538,11 @@ public class BookcasePresenter implements BasePresenter {
                 (dialogInterface, i) -> {
                     dialogInterface.dismiss();
                     if (UserService.isLogin()) {
-                        new Thread(new Runnable() {
-                            @Override
-                            public void run() {
-                                if (mBackupAndRestore.backup("localBackup") & UserService.webBackup()) {
-                                    DialogCreator.createTipDialog(mMainActivity, "备份(本地和网络)成功，本地备份文件路径：" + APPCONST.BACKUP_FILE_DIR);
-                                } else {
-                                    DialogCreator.createTipDialog(mMainActivity, "未登录或未给予储存权限，备份失败！");
-                                }
+                        new Thread(() -> {
+                            if (mBackupAndRestore.backup("localBackup") & UserService.webBackup()) {
+                                DialogCreator.createTipDialog(mMainActivity, "备份(本地和网络)成功，本地备份文件路径：" + APPCONST.BACKUP_FILE_DIR);
+                            } else {
+                                DialogCreator.createTipDialog(mMainActivity, "未登录或未给予储存权限，备份失败！");
                             }
                         }).start();
                     } else {
@@ -615,13 +612,10 @@ public class BookcasePresenter implements BasePresenter {
                     continue;
                 }
                 isDownloadFinish = false;
-                Thread downloadThread = new Thread(new Runnable() {
-                    @Override
-                    public void run() {
-                        ArrayList<Chapter> chapters = (ArrayList<Chapter>) mChapterService.findBookAllChapterByBookId(book.getId());
-                        addDownload(book, chapters,
-                                book.getHisttoryChapterNum(), chapters.size());
-                    }
+                Thread downloadThread = new Thread(() -> {
+                    ArrayList<Chapter> chapters = (ArrayList<Chapter>) mChapterService.findBookAllChapterByBookId(book.getId());
+                    addDownload(book, chapters,
+                            book.getHisttoryChapterNum(), chapters.size());
                 });
                 es.submit(downloadThread);
                 do {
diff --git a/img/12.png b/img/12.png
index 146983e..22a4b52 100644
Binary files a/img/12.png and b/img/12.png differ