由于scrapy，我正在嘗試抓取lacentrale.fr 的網站，但即使我輪換了我的用戶代理和IP 地址（感謝TOR），該網站也會檢測到我的機器人并向我發送錯誤值。請您檢查我在中間件和設置中使用的代碼，并告訴我是否出現問題。中間件中的代碼：from tutorial.settings import * #USER_AGENT_LISTimport randomfrom stem.control import Controllerfrom toripchanger import TorIpChangerfrom stem import Signalclass RandomUserAgentMiddleware(object):def process_request(self, request, spider):    ua = random.choice(USER_AGENT_LIST)    if ua:        request.headers.setdefault('User-Agent', ua)def _set_new_ip():    with Controller.from_port(port=9051) as controller:        controller.authenticate(password='')        controller.signal(Signal.NEWNYM)ip_changer = TorIpChanger(reuse_threshold=10)class ProxyMiddleware(object):    _requests_count = 0def process_request(self, request, spider):    self._requests_count += 1    if self._requests_count > 10:        self._requests_count = 0        ip_changer.get_new_ip()        print("New Tor connection processed")    request.meta['proxy'] = 'http://127.0.0.1:8118'    spider.log('Proxy : %s' % request.meta['proxy'])設置中使用的代碼：BOT_NAME = 'tutorial'SPIDER_MODULES = ['tutorial.spiders']NEWSPIDER_MODULE = 'tutorial.spiders'ROBOTSTXT_OBEY = TrueDOWNLOAD_DELAY = 1RANDOMIZE_DOWNLOAD_DELAY = TrueDOWNLOADER_MIDDLEWARES = {    'scrapy.contrib.downloadermiddleware.useragent.UserAgentMiddleware': None,    'tutorial.middlewares.RandomUserAgentMiddleware': 400,    'scrapy.contrib.downloadermiddleware.httpcompression.HttpCompressionMiddleware':None, # to avoid the raise IOError, 'Not a gzipped file' exceptions.IOError: Not a gzipped file    'scrapy.contrib.downloadermiddleware.httpproxy.HttpProxyMiddleware': 110,    'tutorial.middlewares.ProxyMiddleware': 100    }