fix db connection

@@ -11,6 +11,7 @@ import requests
 import traceback
 import traceback
 from collections import Counter
 from collections import Counter
 from datetime import datetime, date
 from datetime import datetime, date
+from django import db
 from django.utils import timezone
 from django.utils import timezone
 from django.core.management import BaseCommand
 from django.core.management import BaseCommand
 from multiprocessing import Process, Queue, Manager, Lock
 from multiprocessing import Process, Queue, Manager, Lock
@@ -731,6 +732,7 @@ class Command(BaseCommand, LoggerMixin):
     # EDMS异常：下载异常-->回队列-->邮件；上传异常-->重新上传队列-->邮件
     # EDMS异常：下载异常-->回队列-->邮件；上传异常-->重新上传队列-->邮件
     # 算法异常：第一道异常-->识别失败-->邮件；第二道异常-->识别失败-->邮件
     # 算法异常：第一道异常-->识别失败-->邮件；第二道异常-->识别失败-->邮件
     def handle(self, *args, **kwargs):
     def handle(self, *args, **kwargs):
+        db.close_old_connections()
         lock = Lock()
         lock = Lock()
         with Manager() as manager:
         with Manager() as manager:
             error_list = manager.list()
             error_list = manager.list()