diff --git a/utils/http.py b/utils/http.py
index dd97daa6..90c45885 100644
--- a/utils/http.py
+++ b/utils/http.py
@@ -14,18 +14,12 @@ def post(url, body, logger, headers=None, timeout=5) :
     }
     result = {}
 
-    try :
-        # 消除https警告
-        requests.packages.urllib3.disable_warnings()
-    except Exception :
-        pass
-
     response = None
     try :
         if headers :
-            response = requests.post(url, headers=headers, data=json.dumps(body), proxies=proxies, verify=False, timeout=timeout)
+            response = requests.post(url, headers=headers, data=json.dumps(body), proxies=proxies, verify=True, timeout=timeout)
         else :
-            response = requests.post(url, data=json.dumps(body), proxies=proxies, verify=False, timeout=timeout)
+            response = requests.post(url, data=json.dumps(body), proxies=proxies, verify=True, timeout=timeout)
         try :
             response.encoding = "utf-8"
             result = json.loads(response.text)
@@ -100,7 +94,7 @@ def getOCR(url) :
     proxies = {"http": None, "https": None}
     start = time.time()
     try :
-        res = requests.get(url, proxies=proxies, verify=False, timeout=3)
+        res = requests.get(url, proxies=proxies, verify=True, timeout=3)
         time_diff = time.time() - start
         status_code = res.status_code
     except Exception :
diff --git a/utils/offline_ocr.py b/utils/offline_ocr.py
index 3d608457..6138434d 100644
--- a/utils/offline_ocr.py
+++ b/utils/offline_ocr.py
@@ -5,6 +5,7 @@
 import time
 import requests
 import zipfile
+import subprocess
 
 import utils.message
 import utils.thread
@@ -47,10 +48,11 @@ def install_offline_ocr(object) :
 def killOfflineOCR(port) :
 
     try :
-        popen_content = os.popen("netstat -ano |findstr %s"%port).read()
-        if popen_content :
-            pid = popen_content.split(" ")[-1]
-            os.popen("taskkill /f /t /im %s"%pid)
+        popen_content = subprocess.run(["netstat", "-ano"], capture_output=True, text=True).stdout
+        lines = [line for line in popen_content.splitlines() if str(port) in line]
+        if lines:
+            pid = lines[0].split()[-1]
+            subprocess.run(["taskkill", "/f", "/t", "/pid", pid], capture_output=True)
     except Exception :
         return format_exc()
 
diff --git a/utils/sqlite.py b/utils/sqlite.py
index 267a4aba..19a4f5a0 100644
--- a/utils/sqlite.py
+++ b/utils/sqlite.py
@@ -130,15 +130,18 @@ def selectTranslationDBList(src, tgt, limit, offset, logger) :
     try :
         if src :
             if tgt :
-                sql = '''SELECT id, trans_type, src, tgt FROM translations WHERE src LIKE '%{}%' AND tgt LIKE '%{}%' ORDER BY id DESC LIMIT ? OFFSET ?;'''.format(src, tgt)
+                sql = '''SELECT id, trans_type, src, tgt FROM translations WHERE src LIKE ? AND tgt LIKE ? ORDER BY id DESC LIMIT ? OFFSET ?;'''
+                cursor = TRANSLATION_DB.execute(sql, (f'%{src}%', f'%{tgt}%', limit, offset))
             else :
-                sql = '''SELECT id, trans_type, src, tgt FROM translations WHERE src LIKE '%{}%' ORDER BY id DESC LIMIT ? OFFSET ?;'''.format(src)
+                sql = '''SELECT id, trans_type, src, tgt FROM translations WHERE src LIKE ? ORDER BY id DESC LIMIT ? OFFSET ?;'''
+                cursor = TRANSLATION_DB.execute(sql, (f'%{src}%', limit, offset))
         else:
             if tgt :
-                sql = '''SELECT id, trans_type, src, tgt FROM translations WHERE tgt LIKE '%{}%' ORDER BY id DESC LIMIT ? OFFSET ?;'''.format(tgt)
+                sql = '''SELECT id, trans_type, src, tgt FROM translations WHERE tgt LIKE ? ORDER BY id DESC LIMIT ? OFFSET ?;'''
+                cursor = TRANSLATION_DB.execute(sql, (f'%{tgt}%', limit, offset))
             else :
                 sql = '''SELECT id, trans_type, src, tgt FROM translations ORDER BY id DESC LIMIT ? OFFSET ?;'''
-        cursor = TRANSLATION_DB.execute(sql, (limit, offset))
+                cursor = TRANSLATION_DB.execute(sql, (limit, offset))
         rows = cursor.fetchall()
         cursor.close()
     except Exception :
@@ -233,15 +236,18 @@ def selectTranslationDBTotal(src, tgt, logger) :
     try :
         if src :
             if tgt :
-                sql = '''SELECT count(*) FROM translations WHERE src LIKE '%{}%' AND tgt LIKE '%{}%';'''.format(src, tgt)
+                sql = '''SELECT count(*) FROM translations WHERE src LIKE ? AND tgt LIKE ?;'''
+                cursor = TRANSLATION_DB.execute(sql, (f'%{src}%', f'%{tgt}%'))
             else :
-                sql = '''SELECT count(*) FROM translations WHERE src LIKE '%{}%';'''.format(src)
+                sql = '''SELECT count(*) FROM translations WHERE src LIKE ?;'''
+                cursor = TRANSLATION_DB.execute(sql, (f'%{src}%',))
         else :
             if tgt :
-                sql = '''SELECT count(*) FROM translations WHERE tgt LIKE '%{}%';'''.format(tgt)
+                sql = '''SELECT count(*) FROM translations WHERE tgt LIKE ?;'''
+                cursor = TRANSLATION_DB.execute(sql, (f'%{tgt}%',))
             else :
                 sql = '''SELECT count(*) FROM translations;'''
-        cursor = TRANSLATION_DB.execute(sql)
+                cursor = TRANSLATION_DB.execute(sql)
         result = cursor.fetchone()[0]
         cursor.close()
     except Exception :