[scrapy.spidermiddlewares.httperror] INFO: Ignoring respons 403...HTTP status code is not handled..

分析一下这几天玩爬虫碰到的坑。

因为初学，所以边看书，边看别人的实例，本想照着别人的先搞出个小名堂，不料深陷403泥潭，一下午才拔出来。我用的是scrapy框架，具体报错如下：

[root@Uu tutorial]# scrapy crawl dmoz -o torrents.jl
2018-08-23 22:49:26 [scrapy.utils.log] INFO: Scrapy 1.5.1 started (bot: tutorial)
2018-08-23 22:49:26 [scrapy.utils.log] INFO: Versions: lxml 3.2.1.0, libxml2 2.9.1, cssselect 1.0.3, parsel 1.5.0, w3lib 1.19.0, Twisted 18.7.0, Python 2.7.5 (default, Jul 13 2018, 13:06:57) - [GCC 4.8.5 20150623 (Red Hat 4.8.5-28)], pyOpenSSL 18.0.0 (OpenSSL 1.1.0i  14 Aug 2018), cryptography 2.3.1, Platform Linux-3.10.0-693.el7.x86_64-x86_64-with-centos-7.4.1708-Core
2018-08-23 22:49:26 [scrapy.crawler] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'tutorial.spiders', 'FEED_URI': 'torrents.jl', 'CONCURRENT_REQUESTS': 1, 'SPIDER_MODULES': ['tutorial.spiders'], 'BOT_NAME': 'tutorial', 'COOKIES_ENABLED': False, 'USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; AcooBrowser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)', 'FEED_FORMAT': 'jl', 'DOWNLOAD_DELAY': 5}
2018-08-23 22:49:26 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.feedexport.FeedExporter',
 'scrapy.extensions.memusage.MemoryUsage',
 'scrapy.extensions.logstats.LogStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.corestats.CoreStats']
2018-08-23 22:49:26 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
 'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
 'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
 'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
 'scrapy.downloadermiddlewares.retry.RetryMiddleware',
 'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
 'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
 'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
 'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
 'scrapy.downloadermiddlewares.stats.DownloaderStats']
2018-08-23 22:49:26 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
 'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
 'scrapy.spidermiddlewares.referer.RefererMiddleware',
 'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
 'scrapy.spidermiddlewares.depth.DepthMiddleware']
2018-08-23 22:49:26 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2018-08-23 22:49:26 [scrapy.core.engine] INFO: Spider opened
2018-08-23 22:49:26 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2018-08-23 22:49:26 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6023
2018-08-23 22:49:27 [scrapy.core.engine] DEBUG: Crawled (403) <GET http://www.dmoz.org/Computers/Programming/Languages/Python/Books/> (referer: None)
2018-08-23 22:49:27 [scrapy.spidermiddlewares.httperror] INFO: Ignoring response <403 http://www.dmoz.org/Computers/Programming/Languages/Python/Books/>: HTTP status code is not handled or not allowed
2018-08-23 22:49:33 [scrapy.core.engine] DEBUG: Crawled (403) <GET http://www.dmoz.org/Computers/Programming/Languages/Python/Resources/> (referer: None)
2018-08-23 22:49:33 [scrapy.spidermiddlewares.httperror] INFO: Ignoring response <403 http://www.dmoz.org/Computers/Programming/Languages/Python/Resources/>: HTTP status code is not handled or not allowed
2018-08-23 22:49:33 [scrapy.core.engine] INFO: Closing spider (finished)
2018-08-23 22:49:33 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 662,
 'downloader/request_count': 2,
 'downloader/request_method_count/GET': 2,
 'downloader/response_bytes': 1402,
 'downloader/response_count': 2,
 'downloader/response_status_count/403': 2,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2018, 8, 23, 14, 49, 33, 717814),
 'httperror/response_ignored_count': 2,
 'httperror/response_ignored_status_count/403': 2,
 'log_count/DEBUG': 3,
 'log_count/INFO': 9,
 'memusage/max': 42958848,
 'memusage/startup': 42958848,
 'response_received_count': 2,
 'scheduler/dequeued': 2,
 'scheduler/dequeued/memory': 2,
 'scheduler/enqueued': 2,
 'scheduler/enqueued/memory': 2,
 'start_time': datetime.datetime(2018, 8, 23, 14, 49, 26, 612313)}
2018-08-23 22:49:33 [scrapy.core.engine] INFO: Spider closed (finished)

开始以为是settings.py的问题，改来改去，发现都不是，又改了item，还不是，最后把要爬取的url输入浏览器，发现地址失效，如下所示：

所以，解决问题的方式就是，重新找一个地址爬取，原地址已不可用。

[scrapy.spidermiddlewares.httperror] INFO: Ignoring respons 403...HTTP status code is not handled..

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