创建数据库文件，无数据/模式

Question

在提供的路径中创建.db文件。打印输出显示在终端窗口中，但.db文件中没有数据/模式。没有错误出现，语法看起来是正确的。这是代码。我不知道为什么，conn.commit()是在正确的领域。任何信息将不胜感激。

from scapy.all import * 
from scapy.layers import dhcp 
import logging 
logging.getLogger("scapy.runtime").setLevel(logging.ERROR) 
runtime = logging.getLogger('scapy.runtime') 
runtime.setLevel(logging.ERROR) 
loading = logging.getLogger('scapy.loading') 
loading.setLevel(logging.ERROR) 
from scapy.layers.l2 import Ether 
from scapy.layers.all import BOOTP 
from scapy.layers.all import DHCP, DHCPTypes, DHCPOptions, DHCPRevOptions 
from scapy import route 
import urllib 
import urllib3 
from urllib.request import urlopen 
import os 
import sqlite3 
from datetime import datetime 
import sys 


DIR_NAME = os.path.dirname(__file__) 
db_path = os.path.join(DIR_NAME, "/home/dtman/Desktop/Secure_DHCP /secureDHCP-DB.db") 

conn = sqlite3.connect(db_path) 
c = conn.cursor() 
conn.commit() 


def make_table(): 
    c.execute('CREATE TABLE IF NOT EXISTS secureDHCP(mac VARCHAR(50), vendorId VARCHAR(50), time VARCHAR(50), oData VARCHAR(50)') 
    conn.commit() 
    c.close() 
    conn.close() 


def the_data(): 
    mac = src_mac() 
    vendorId = vendor() 
    time = timeData() 
    oData = optData() 
    c.execute("INSERT INTO secureDHCP (mac, vendorId, time, oData) VALUES (?, ?, ?, ?)", 
      (src_mac, vendor, timeDate, optData)) 
    conn.commit() 


s=socket.socket(socket.PF_PACKET, socket.SOCK_RAW, socket.ntohs(0x0800)) 

print("Input network interface") 
interface = input() 


def pkt_data(pkt): 
    src_mac = pkt.getlayer(Ether).fields['src'] 
    url = 'http://api.macvendors.com/' + src_mac 
    r = urlopen(url) 
    vendor = r.read() 
    timeData = str(datetime.now()) 
    full_options = pkt.getlayer(DHCP).fields['options'] 
    dhcp_options = [o for o in full_options if isinstance(o, tuple)] 
    for x in dhcp_options: 
     if x[0] in ('message-type', 'requested_addr', 'hostname'): 
      optData = x[1] 
      print('MAC: {} /// Vendor: {} /// Time {} /// optData: {}'.format(src_mac, vendor, timeData, optData)) 

sniff(iface=interface, prn=pkt_data, filter='udp port (67 or 68)', store=0) 

输出端子：

`MAC: 00:00:00:00:00:00 /// Vendor: b'BRAND, Inc.' /// Other Data: 3 
MAC: 00:00:00:00:00:00 /// Vendor: b'BRAND, Inc.' /// Other Data: 192.168.1.4 
MAC: 00:00:00:00:00:00 /// Vendor: b'BRAND, Inc.' /// Other Data: b'HOSTNAME'` 

Answer 1

首先，你没有调用该方法类似make_table()。第二，你叫make_table() 和里面，为什么收盘conn怎么你the_data()？插入日期？请给最小样本。像下面的东西永远不会错。

conn = sqlite3.connect(db_path) 
c = conn.cursor() 
c.execute('CREATE TABLE IF NOT EXISTS secureDHCP(mac VARCHAR(50), vendorId VARCHAR(50), time VARCHAR(50), oData VARCHAR(50)') 
conn.commit() 
c.execute("INSERT INTO secureDHCP (mac, vendorId, time, oData) VALUES (?, ?, ?, ?)", 
     (src_mac, vendor, timeDate, optData)) 
conn.commit() 
c.close() 
conn.close()