diff --git a/app/services/book_service.py b/app/services/book_service.py
index a8d9bd8..3439759 100644
--- a/app/services/book_service.py
+++ b/app/services/book_service.py
@@ -10,7 +10,8 @@ from app.models import Setting
 class BookService:
     def __init__(self):
         self.setting = Setting.query.filter_by(name="book_download").first().to_dict()
-        self.setting["targetDate"] = timestamp_to_datetime(datetime_to_timestamp(self.setting["targetDate"]) - 24 * 60 * 60)
+        self.setting["targetDate"] = timestamp_to_datetime(
+            datetime_to_timestamp(self.setting["targetDate"]) - 24 * 60 * 60)
         app_dir = os.path.dirname(os.path.dirname(__file__))
         self.download_path = os.path.join(os.path.dirname(app_dir), "download")  # 下载目录
         self.today_timestamp = get_today_timestamp()
@@ -40,7 +41,7 @@ class BookService:
 
     def isDownloadTarget(self, soup):  # 是否是可以下载的文件
         return soup.headers.get('Content-Type') in ['"application/octet-stream"', "application/octet-stream",
-                                                    "text/plain","application/zip"]
+                                                    "text/plain", "application/zip"]
 
     def post_page(self, name, url):  # 帖子页面
         print(f"详情页面 {self.setting["baseUrl"]}{url}")
@@ -98,9 +99,7 @@ class BookService:
         if total_page_element is not None:  # 总页数元素存在 则更新总页数
             new_total_page = int(total_page_element.get("totalpage"))  # 获取总页数
             if self.setting["totalPage"] != new_total_page:  # 总页数有更新
-                self.setting["totalPage"] = new_total_page  # 更新总页数
-                Setting.query.filter_by(name="book_download").update({"totalPage": self.setting["totalPage"]})
-                db.session.commit()
+                self._update_setting(totalPage=new_total_page)
                 yield from self.section_page(new_total_page - self.setting["targetCountdownPage"])  # 重新跳转指点版块页面
                 return None
 
@@ -133,9 +132,7 @@ class BookService:
                 # yield f"data: 目标时间是{post_date}\n\n"
                 yield from self.post_page(self.legitimate_naming(post_element.string), post_element['href'])  # 跳转帖子页面
             if post_date_timestamp > target_date_timestamp:  # 帖子时间大于目标时间并且没有下一天时间
-                self.setting["targetDate"] = post_date
-                Setting.query.filter_by(name="book_download").update({"targetDate": self.setting["targetDate"]})
-                db.session.commit()
+                self._update_setting(targetDate=post_date)
                 print(f"下一天是 {post_date}")
                 # yield f"data: 下一天是 {post_date}\n\n"
                 self.one_date_loading = False
@@ -146,11 +143,8 @@ class BookService:
             "totalPage"] - 1:
             print("跳转到下一页")
             # yield f"data: 跳转到下一页\n\n"
-            self.setting["targetCountdownPage"] = min(self.setting["targetCountdownPage"] + 1,
-                                                      self.setting["totalPage"] - 1)
-            Setting.query.filter_by(name="book_download").update(
-                {"targetCountdownPage": self.setting["targetCountdownPage"]})
-            db.session.commit()
+            self._update_setting(
+                targetCountdownPage=min(self.setting["targetCountdownPage"] + 1, self.setting["totalPage"] - 1))
             yield from self.section_page(self.setting["totalPage"] - self.setting["targetCountdownPage"])
         return None
 
@@ -168,3 +162,9 @@ class BookService:
         target_page = self.setting["totalPage"] - self.setting["targetCountdownPage"]  # 目标页
         yield from self.section_page(target_page)  # 前往目标页
         yield f"event: close\ndata: 已完成\n\n"
+
+    def _update_setting(self, **kwargs):
+        Setting.query.filter_by(name="book_download").update(kwargs)
+        db.session.commit()
+        for key, value in kwargs.items():
+            self.setting[key] = value