python-3.x 使用CrawlerProcess、TwistedScheduler和一些中间件运行Scrapy时出现问题,可以运行Crawler x次，但最终会失败

ymzxtsji  于 2023-02-01  发布在  Python
关注(0)|答案(1)|浏览(187)

如上所述，在运行代码一段时间后，它失败了。日志没有显示任何东西，它将停止工作。
我将显示我得到的一些警告和错误以及代码和设置文件。
请记住，它的代码功能齐全，可以刮网站没有任何问题，但经过x时间失败。
我有过这样的情况，刮刀工作了2个多小时，几分钟后就会失败。我有6个用户代理在使用，150个代理正在运行。当它失败时，我立即手动访问网站，使用正在运行的代理并测试它们，看看它们是否是问题所在，他们将永远工作，所以这是不可能的，代理是问题，该网站似乎有非常低的保护，对scraper和crawler。

蜘蛛文件：

# -*- coding: utf-8 -*-
import os
import requests
from discord import SyncWebhook
import discord
import aiohttp
import scrapy
import datetime
from datetime import date
from scrapy.crawler import CrawlerProcess
from scrapy.spiders import CrawlSpider, Rule
from scrapy.linkextractors import LinkExtractor

from scrapy.utils.project import get_project_settings
from apscheduler.schedulers.twisted import TwistedScheduler

namelist = []
timelist = []

def send_embed(price, name, stock, image, response):
    neg = ['sticker', 'pivot tool', 't-shirt']
    #neg = []

    if (price and name and stock) and (not any(x in name.lower() for x in neg) or ("https://www.scottycameron.com/store/speed-shop-creations/" in str(response.request.headers.get('Referer', None)) and not "t-shirt" in name.lower())):
        
        temptime = datetime.datetime.now()

        global namelist
        global timelist

        if name not in namelist:
            namelist.append(name)
            timelist.append(temptime)

            stock = stock.replace('(', '')
            stock = stock.replace(')', '')
            image = image.replace(' ', '%20')
            webhook = SyncWebhook.from_url('REDACTED')
            embed = discord.Embed(
                title=str(name),
                url=str(response.request.url),
                colour=0xDB0B23
            )
            embed.add_field(name = "Price", value = str(price), inline = True)
            embed.add_field(name = "Stock", value = str(stock), inline = True)
            embed.set_thumbnail(url = str(image))
            embed.set_footer(text = "Notify Test Monitors")
            webhook.send(embed = embed)
        else:
            index = namelist.index(name)
            diff = (temptime - timelist[index]).total_seconds()
            if diff > 120:

                del timelist[index]
                timelist.insert(index, temptime)

                stock = stock.replace('(', '')
                stock = stock.replace(')', '')
                image = image.replace(' ', '%20')
                webhook = SyncWebhook.from_url('REDACTED')
                embed = discord.Embed(
                    title=str(name),
                    url=str(response.request.url),
                    colour=0xDB0B23
                )
                embed.add_field(name = "Price", value = str(price), inline = True)
                embed.add_field(name = "Stock", value = str(stock), inline = True)
                embed.set_thumbnail(url = str(image))
                embed.set_footer(text = "Notify Test Monitors")
                webhook.send(embed = embed)

class scottycameronSpider(CrawlSpider):
    name = 'scottycameron'
    allowed_domains = ['scottycameron.com']
    start_urls = ['https://www.scottycameron.com/']

    rules = (
        Rule(LinkExtractor(allow = 'store/'), callback = 'parse', follow = True),
    )

    def parse(self, response):
        for products in response.xpath('//*[@id="layout-content"]'):
            price = products.xpath('//*[@id="product_Detail_Price_Div"]/p/text()').get()
            name = products.xpath('//*[@id="layout-product"]/div[2]/div/div[2]/h1/text()').get()
            stock = products.xpath('//*[@id="dynamic-inventory"]/span/text()').get()
            image = products.xpath('//*[@id="product-image"]/@src').get()

            send_embed(price, name, stock, image, response)

    def close(self, reason):
        start_time = self.crawler.stats.get_value('start_time')
        finish_time = self.crawler.stats.get_value('finish_time')
        with open("spiders/test_scrapy/times.txt", 'a') as f:
            f.write(str(finish_time - start_time) + "\n")
            f.close()

process = CrawlerProcess(get_project_settings())
scheduler = TwistedScheduler()
scheduler.add_job(process.crawl, 'interval', args=[scottycameronSpider], seconds=5)
scheduler.start()
process.start(False)

设置.py

# Scrapy settings for scrapy_monitors project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

import asyncio
asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())

BOT_NAME = 'scrapy_monitors'

SPIDER_MODULES = ['scrapy_monitors.spiders']
NEWSPIDER_MODULE = 'scrapy_monitors.spiders'

# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = 'scrapy_monitors (+http://www.yourdomain.com)'

# Obey robots.txt rules
ROBOTSTXT_OBEY = True

# Configure maximum concurrent requests performed by Scrapy (default: 16)
CONCURRENT_REQUESTS = 100
CONCURRENT_ITEMS = 100

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
CONCURRENT_REQUESTS_PER_DOMAIN = 80
#CONCURRENT_REQUESTS_PER_IP = 32

# Disable cookies (enabled by default)
COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
#}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
#    'scrapy_monitors.middlewares.ScrapyMonitorsSpiderMiddleware': 543,
#}

# Comment it out if you want to see more log items to debug
LOG_LEVEL = "WARNING"
LOG_FILE = "spiders/test_scrapy/log.txt"

# Insert Your List of Proxies Here
ROTATING_PROXY_LIST_PATH = 'spiders/proxies.txt'

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
    #'scrapy_monitors.middlewares.ScrapyMonitorsDownloaderMiddleware': 543,
    #'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware': None,
    #'scrapy_user_agents.middlewares.RandomUserAgentMiddleware': 400,
    'rotating_proxies.middlewares.RotatingProxyMiddleware': 610,
    'rotating_proxies.middlewares.BanDetectionMiddleware': 620,
}

# Used for User Agents
DOWNLOADER_MIDDLEWARES.update({
    'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware': None,
    'scrapy_useragents.downloadermiddlewares.useragents.UserAgentsMiddleware': 500,
})

USER_AGENTS = [
    ('Mozilla/5.0 (X11; Linux x86_64) '
     'AppleWebKit/537.36 (KHTML, like Gecko) '
     'Chrome/57.0.2987.110 '
     'Safari/537.36'),  # chrome
    ('Mozilla/5.0 (X11; Linux x86_64) '
     'AppleWebKit/537.36 (KHTML, like Gecko) '
     'Chrome/61.0.3163.79 '
     'Safari/537.36'),  # chrome
    ('Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) '
     'Gecko/20100101 '
     'Firefox/55.0'),  # firefox
    ('Mozilla/5.0 (X11; Linux x86_64) '
     'AppleWebKit/537.36 (KHTML, like Gecko) '
     'Chrome/61.0.3163.91 '
     'Safari/537.36'),  # chrome
    ('Mozilla/5.0 (X11; Linux x86_64) '
     'AppleWebKit/537.36 (KHTML, like Gecko) '
     'Chrome/62.0.3202.89 '
     'Safari/537.36'),  # chrome
    ('Mozilla/5.0 (X11; Linux x86_64) '
     'AppleWebKit/537.36 (KHTML, like Gecko) '
     'Chrome/63.0.3239.108 '
     'Safari/537.36'),  # chrome
    # ('Mozilla/5.0 (Windows NT 10.0; Win64; x64) '
    #  'AppleWebKit/537.36 (KHTML, like Gecko) '
    #  'Chrome/58.0.3029.110 '
    #  'Safari/537.36'),  # chrome
    # ('Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:53.0) '
    #  'Gecko/20100101 '
    #  'Firefox/53.0'),  # firefox
    # ('Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0; Trident/5.0) '),
    # ('Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0; MDDCJS) '),
    # ('Mozilla/5.0 (Windows NT 10.0; Win64; x64) '
    #  'AppleWebKit/537.36 (KHTML, like Gecko) '
    #  'Chrome/51.0.2704.79 '
    #  'Safari/537.36 '
    #  'Edge/14.14393'),  # chrome
    # ('Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) '),
]
# Used for User Agents

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
EXTENSIONS = {
    'scrapy.extensions.telnet.TelnetConsole': None,
    #'scrapy.telnet.TelnetConsole': None
}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
#ITEM_PIPELINES = {
#    'scrapy_monitors.pipelines.ScrapyMonitorsPipeline': 300,
#}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

# Schedule order
#SCHEDULER_ORDER = 'BFO'

# Set settings whose default value is deprecated to a future-proof value
REQUEST_FINGERPRINTER_IMPLEMENTATION = '2.7'
#TWISTED_REACTOR = 'twisted.internet.asyncioreactor.AsyncioSelectorReactor'

如上所述，我试图修复错误的问题，但没有这样的运气，我测试了代理错误后，所有的工作都很好，我尝试了多个用户代理，看看是否修复它，我不能得到足够的日志记录器给予我最好的诊断。如果也有建议，如何更好地记录，我很乐意听到它，这样我就可以更好地了解这个问题。

我将在注解中附加错误日志1
错误日志2：运行一段时间后，出现以下错误：

Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\twisted\internet\tcp.py", line 1334, in startListening
    skt.bind(addr)
OSError: [WinError 10048] Only one usage of each socket address (protocol/network address/port) is normally permitted

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\scrapy\utils\defer.py", line 292, in maybeDeferred_coro
    result = f(*args, **kw)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\pydispatch\robustapply.py", line 55, in robustApply
    return receiver(*arguments, **named)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\scrapy\extensions\telnet.py", line 65, in start_listening
    self.port = listen_tcp(self.portrange, self.host, self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\scrapy\utils\reactor.py", line 23, in listen_tcp
    return reactor.listenTCP(x, factory, interface=host)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\twisted\internet\posixbase.py", line 369, in listenTCP
    p.startListening()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python310\lib\site-packages\twisted\internet\tcp.py", line 1336, in startListening
    raise CannotListenError(self.interface, self.port, le)
twisted.internet.error.CannotListenError: Couldn't listen on 127.0.0.1:6073: [WinError 10048] Only one usage of each socket address (protocol/network address/port) is normally permitted.
2023-01-27 17:17:02 [scrapy.utils.signal] ERROR: Error caught on signal handler: <bound method TelnetConsole.start_listening of <scrapy.extensions.telnet.TelnetConsole object at 0x0000028AE20831F0>>

这个错误我试图修复自己，但最终它没有修复它，因为我相信这个问题源于我的代码失败，并不断尝试连接。

python-3.x

1条答案

按热度按时间
jgwigjjp

jgwigjjp1#

错误日志2：

此错误是由于TelnetConsole的“端口用完”而导致的。
如果查看文档中的telnet控制台页面，您可以看到端口范围：

portrange = [6023, 6073]

通过添加TELNETCONSOLE_PORT = [6023, 7000]来扩展端口范围，例如添加到settings.py文件，或者更好的方法是禁用telnet控制台TELNETCONSOLE_ENABLED = False。

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