数据库断开重连问题

quality-doctor/db/mod_db.py

@@ -56,11 +56,17 @@ class Database:
         res = ''
         if (self._conn):
             try:
+                self._conn.ping(reconnect=True)
                 self._cursor.execute(sql)
                 res = self._cursor.fetchall()
             except Exception as error:
-                res = False
-                print("query database exception,%s" % error)
+                self._conn.ping(reconnect=True)
+                try:
+                    self._cursor.execute(sql)
+                    res = self._cursor.fetchall()
+                except Exception as error:
+                    res = False
+                    print("query database exception,%s" % error)
         return res
 
     def sqlInsert(self,sql):