那些遇到过的问题

使用Scrapy时如何防止twisted.internet.error.ConnectionLost错误？

Apr*_*ril 12 twisted scrapy web-scraping scrapy-spider

我正在抓一些页面scrapy并得到以下错误:

twisted.internet.error.ConnectionLost

我的命令行输出:

2015-05-04 18:40:32+0800 [cnproxy] INFO: Spider opened
2015-05-04 18:40:32+0800 [cnproxy] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2015-05-04 18:40:32+0800 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6023
2015-05-04 18:40:32+0800 [scrapy] DEBUG: Web service listening on 127.0.0.1:6080
2015-05-04 18:40:32+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy1.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:32+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy1.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:32+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy1.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:32+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy1.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy3.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy3.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy3.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy3.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy8.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy8.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy2.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxyedu1.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy9.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy10.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy9.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy8.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy2.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy8.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxyedu1.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy10.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy9.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy2.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy9.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy2.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy10.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy10.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxyedu1.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxyedu1.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy5.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy7.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy5.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy7.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy7.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy7.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy5.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy5.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy6.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy6.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy6.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:33+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy6.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:34+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxyedu2.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:34+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxyedu2.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:34+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxyedu2.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:34+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxyedu2.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:35+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy4.html> (failed 1 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:35+0800 [cnproxy] DEBUG: Retrying <GET http://www.cnproxy.com/proxy4.html> (failed 2 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:35+0800 [cnproxy] DEBUG: Gave up retrying <GET http://www.cnproxy.com/proxy4.html> (failed 3 times): [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:35+0800 [cnproxy] ERROR: Error downloading <GET http://www.cnproxy.com/proxy4.html>: [<twisted.python.failure.Failure <class 'twisted.internet.error.ConnectionLost'>>]
2015-05-04 18:40:35+0800 [cnproxy] INFO: Closing spider (finished)
2015-05-04 18:40:35+0800 [cnproxy] INFO: Dumping Scrapy stats:
{'downloader/exception_count': 36,
 'downloader/exception_type_count/twisted.web._newclient.ResponseNeverReceived': 36,
 'downloader/request_bytes': 8121,
 'downloader/request_count': 36,
 'downloader/request_method_count/GET': 36,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2015, 5, 4, 10, 40, 35, 608377),
 'log_count/DEBUG': 38,
 'log_count/ERROR': 12,
 'log_count/INFO': 7,
 'scheduler/dequeued': 36,
 'scheduler/dequeued/memory': 36,
 'scheduler/enqueued': 36,
 'scheduler/enqueued/memory': 36,
 'start_time': datetime.datetime(2015, 5, 4, 10, 40, 32, 624695)}
2015-05-04 18:40:35+0800 [cnproxy] INFO: Spider closed (finished)
Run Code Online (Sandbox Code Playgroud)

我的settings.py:

    SPIDER_MODULES = ['proxy.spiders']
    NEWSPIDER_MODULES = 'proxy.spiders'

    DOWNLOAD_DELAY = 0
    DOWNLOAD_TIMEOUT = 30

    ITEM_PIPELINES = {
              'proxy.pipelines.ProxyPipeline':100,
    }

    CONCURRENT_ITEMS = 100
    CONCURRENT_REQUESTS_PER_DOMAIN = 64
    #CONCURRENT_SPIDERS = 128

    LOG_ENABLED = True
    LOG_ENCODING = 'utf-8'
    LOG_FILE = '/home/hadoop/modules/scrapy/myapp/proxy/proxy.log'
    LOG_LEVEL = 'DEBUG'
    LOG_STDOUT = False
Run Code Online (Sandbox Code Playgroud)

我的蜘蛛proxy_spider.py:

from scrapy.contrib.spiders import CrawlSpider, Rule
from scrapy.selector import HtmlXPathSelector
from scrapy.contrib.linkextractors.lxmlhtml import LxmlLinkExtractor
from proxy.items import ProxyItem
import re

class ProxycrawlerSpider(CrawlSpider):
    name = 'cnproxy'
    allowed_domains = ['www.cnproxy.com']
    indexes = [1,2,3,4,5,6,7,8,9,10]
    start_urls = []
    for i in indexes:
        url = 'http://www.cnproxy.com/proxy%s.html' % i
        start_urls.append(url)
    start_urls.append('http://www.cnproxy.com/proxyedu1.html')
    start_urls.append('http://www.cnproxy.com/proxyedu2.html')

    def parse_ip(self,response):
        sel = HtmlXPathSelector(response)
        addresses = sel.select('//tr[position()>1]/td[position()=1]').re('\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}')
        protocols = sel.select('//tr[position()>1]/td[position()=2]').re('<td>(.*)<\/td>')
        locations = sel.select('//tr[position()>1]/td[position()=4]').re('<td>(.*)<\/td>')
        ports_re = re.compile('write\(":"(.*)\)')
        raw_ports = ports_re.findall(response.body);
        port_map = {'z':'3','m':'4','k':'2','l':'9','d':'0','b':'5','i':'7','w':'6','r':'8','c':'1','+':''}
        ports = []
        for port in raw_ports:
            tmp = port 
            for key in port_map:
                tmp = tmp.replace(key,port_map[key]);
            ports.append(tmp)
        items = []
        for i in range(len(addresses)):
            item = ProxyItem()
            item['address'] = addresses[i]
            item['protocol'] = protocols[i]
            item['location'] = locations[i]
            item['port'] = ports[i]
            items.append(item)
        return items
Run Code Online (Sandbox Code Playgroud)

我的管道或设置有什么问题吗？如果不是,我该如何防止twisted.internet.error.ConnectionLost错误.

我试过了 scrapy shell

$scrapy shell http://www.cnproxy.com/proxy1.html
Run Code Online (Sandbox Code Playgroud)

并获得与标题相同的错误.但我可以使用我的Chrome访问该页面.我尝试过其他类似的网页

$scrapy shell http://stackoverflow.com
Run Code Online (Sandbox Code Playgroud)

他们都运作良好.

sur*_*190 10

您需要设置用户代理字符串.似乎有些网站不喜欢它,并在您的用户代理不是浏览器时阻止.您可以找到用户代理字符串的示例.

该文章指出了最佳做法,停止你的蜘蛛被阻塞.

打开settings.py:添加以下用户代理

USER_AGENT = 'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2049.0 Safari/537.36'

您还可以尝试用户代理随机数

归档时间：

查看次数：

5520 次

最近记录：

10 年，7 月 前
相关归档
Selenium - Python - 下拉菜单选项值 146
Scrapy Shell - 如何更改USER_AGENT 13
NodeJS x-ray web-scraper:如何关注链接并从子页面获取内容 10
使用Tor代理与scrapy 6
BeautifulSoup - lxml和html5lib解析器刮取差异 6
使用Scrapy进行爬网 - 不处理或不允许HTTP状态代码？ 5
如何获取 HTML 中每个 href 的所有元素作为行并将其添加到 pandas 数据框中？ 5
需要使用RegEx和BeautifulSoup查找文本 4
Excel VBA - 更改输入字段的值 1
如果请求响应为404或505，如何跳过页面 -1
难疑归档
什么是Python中的元类？ 5409
如何从列表列表中制作一个平面列表？ 2950
将具有默认值的列添加到SQL Server中的现有表 2648
.gitignore和.gitkeep有什么区别？ 1776
如何在Linux中一步更改文件夹及其所有子文件夹和文件的权限？ 1711
在GitHub上将图像添加到README.md 1675
在UITableView中使用自动布局来获取动态单元格布局和可变行高 1477
尝试抓住加速我的代码？ 1463
你如何存放未跟踪的文件？ 1287
npm在没有sudo的情况下抛出错误 1218