diff --git a/pachong.py b/pachong.py
index 4cc365b..dc1c6f8 100644
--- a/pachong.py
+++ b/pachong.py
@@ -2,8 +2,25 @@ import requests
 from bs4 import BeautifulSoup
 import time
 import random
+import re
+import logging
+from urllib.parse import urlparse
+import os  # 导入 os 模块用于文件操作
+
+# 配置日志
+logging.basicConfig(filename="Records.log", level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
+
+def is_valid_url(url):
+    #验证 URL 是否有效
+    parsed = urlparse(url)
+    return bool(parsed.scheme in ["http", "https"] and parsed.netloc)
+
+def sanitize_filename(filename):
+    #清理文件名中的非法字符
+    return re.sub(r"[^\w\s]", "_", filename)
 
 def pachong(url):
+    #爬取网页中的所有链接
     headers = {
         "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36"
     }
@@ -14,38 +31,56 @@ def pachong(url):
         soup = BeautifulSoup(response.text, "html.parser")
 
         # 提取所有链接
-        links = []
+        links = set()  # 使用集合去重
         for a_tag in soup.find_all("a", href=True):
             link = a_tag["href"]
-            links.append(link)
+            links.add(link)  # 添加到集合中
 
-        print(f"从 {url} 爬取到 {len(links)} 个链接。")
+        logging.info(f"从 {url} 爬取到 {len(links)} 个链接")
+        print(f"从 {url} 爬取到 {len(links)} 个链接")
         return links
 
     except requests.RequestException as e:
+        logging.error(f"无法访问 {url}，错误：{e}")
         print(f"无法访问 {url}，错误：{e}")
         return []
 
 def main():
-    # 用户输入多个网站的 URL
-    urls = input("请输入多个网站的 URL，用逗号分隔：").strip().split(",")
+    #主函数
+    urls = input("请输入网站的 URL，超过两个用逗号分隔：").strip().split(",")
 
     for url in urls:
         url = url.strip()  # 去除多余的空格
-        if url:  # 确保 URL 不为空
-            print(f"正在爬取 {url}...")
-            links = pachong(url)
+        if not is_valid_url(url):
+            logging.warning(f"无效的 URL：{url}，已跳过")
+            print(f"无效的 URL：{url}，已跳过")
+            continue
 
+        print(f"正在爬取 {url}...")
+        logging.info(f"正在爬取 {url}...")
+        links = pachong(url)
+
+        if links:
             # 为每个网站创建一个独立的文件
-            filename = f"{url.replace('https://', '').replace('www.', '').replace('/', '_')}.txt"
+            filename = sanitize_filename(f"{url.replace('https://', '').replace('www.', '').replace('/', '_')}.txt")
+
+            # 如果文件已存在，删除旧文件
+            if os.path.exists(filename):
+                logging.info(f"检测到旧文件 {filename}，将用新内容更新。")
+                print(f"检测到旧文件 {filename}，将用新内容更新")
+                os.remove(filename)
+
+            # 写入新的爬取内容
             with open(filename, "w", encoding="utf-8") as file:
                 for link in links:
                     file.write(link + "\n")
 
+            logging.info(f"链接已保存到 {filename}")
             print(f"链接已保存到 {filename}")
             time.sleep(random.uniform(1, 3))  # 随机延迟，避免对服务器造成过大压力
 
-    print("所有网站的链接已分别保存到对应的文件中。")
+    print("所有网站的链接已分别保存到对应的文件中")
+    logging.info("所有网站的链接已分别保存到对应的文件中")
 
 if __name__ == "__main__":
-    main()
+    main()
\ No newline at end of file