PS D:\Experience\Myproject> scrapy crawl demo
2025-08-15 17:13:25 [scrapy.utils.log] INFO: Scrapy 2.13.3 started (bot: Myproject)
2025-08-15 17:13:25 [scrapy.utils.log] INFO: Versions:
{'lxml': '6.0.0',
'libxml2': '2.11.9',
'cssselect': '1.3.0',
'parsel': '1.10.0',
'w3lib': '2.3.1',
'Twisted': '25.5.0',
'Python': '3.11.7 (tags/v3.11.7:fa7a6f2, Dec 4 2023, 19:24:49) [MSC v.1937 '
'64 bit (AMD64)]',
'pyOpenSSL': '25.1.0 (OpenSSL 3.5.1 1 Jul 2025)',
'cryptography': '45.0.5',
'Platform': 'Windows-10-10.0.26100-SP0'}
2025-08-15 17:13:25 [scrapy.addons] INFO: Enabled addons:
[]
2025-08-15 17:13:25 [asyncio] DEBUG: Using selector: SelectSelector
2025-08-15 17:13:25 [scrapy.utils.log] DEBUG: Using reactor: twisted.internet.asyncioreactor.AsyncioSelectorReactor
2025-08-15 17:13:25 [scrapy.utils.log] DEBUG: Using asyncio event loop: asyncio.windows_events._WindowsSelectorEventLoop
2025-08-15 17:13:25 [scrapy.extensions.telnet] INFO: Telnet Password: 1dd24e6825bb9258
2025-08-15 17:13:25 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
'scrapy.extensions.telnet.TelnetConsole',
'scrapy.extensions.logstats.LogStats']
2025-08-15 17:13:25 [scrapy.crawler] INFO: Overridden settings:
{'BOT_NAME': 'Myproject',
'CONCURRENT_REQUESTS_PER_DOMAIN': 1,
'DOWNLOAD_DELAY': 1,
'FEED_EXPORT_ENCODING': 'utf-8',
'NEWSPIDER_MODULE': 'Myproject.spiders',
'ROBOTSTXT_OBEY': True,
'SPIDER_MODULES': ['Myproject.spiders']}
2025-08-15 17:13:26 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.offsite.OffsiteMiddleware',
'scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware',
'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.cookies.CookiesMiddleware',
'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
'scrapy.downloadermiddlewares.stats.DownloaderStats']
2025-08-15 17:13:26 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.start.StartSpiderMiddleware',
'scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
'scrapy.spidermiddlewares.referer.RefererMiddleware',
'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
'scrapy.spidermiddlewares.depth.DepthMiddleware']
2025-08-15 17:13:26 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2025-08-15 17:13:26 [scrapy.core.engine] INFO: Spider opened
2025-08-15 17:13:26 [py.warnings] WARNING: C:\Users\lihon\AppData\Local\Programs\Python\Python311\Lib\site-packages\scrapy\core\spidermw.py:433: ScrapyDeprecationWarning: Myproject.spiders.demo_spider.DemoSpider defines the deprecated start_requests() method. start_requests() has been deprecated in favor of a new method, start(), to support asynchronous code execution. start_requests() will stop being called in a future version of Scrapy. If you use Scrapy 2.13 or higher only, replace start_requests() with start(); note that start() is a coroutine (async def). If you need to maintain compatibility with lower Scrapy versions, when overriding start_requests() in a spider class, override start() as well; you can use super() to reuse the inherited start() implementation without copy-pasting. See the release notes of Scrapy 2.13 for details: https://docs.scrapy.org/en/2.13/news.html
warn(
2025-08-15 17:13:26 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2025-08-15 17:13:26 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2025-08-15 17:13:27 [scrapy.core.engine] DEBUG: Crawled (404) <GET http://quotes.toscrape.com/robots.txt> (referer: None)
2025-08-15 17:13:28 [scrapy.core.engine] DEBUG: Crawled (200) <GET http://quotes.toscrape.com> (referer: None)
2025-08-15 17:13:28 [scrapy.core.engine] INFO: Closing spider (finished)
2025-08-15 17:13:28 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 450,
'downloader/request_count': 2,
'downloader/request_method_count/GET': 2,
'downloader/response_bytes': 11514,
'downloader/response_count': 2,
'downloader/response_status_count/200': 1,
'downloader/response_status_count/404': 1,
'elapsed_time_seconds': 1.894587,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2025, 8, 15, 9, 13, 28, 698500, tzinfo=datetime.timezone.utc),
'items_per_minute': 0.0,
'log_count/DEBUG': 5,
'log_count/INFO': 10,
'log_count/WARNING': 1,
'response_received_count': 2,
'responses_per_minute': 120.0,
'robotstxt/request_count': 1,
'robotstxt/response_count': 1,
'robotstxt/response_status_count/404': 1,
'scheduler/dequeued': 1,
'scheduler/dequeued/memory': 1,
'scheduler/enqueued': 1,
'scheduler/enqueued/memory': 1,
'start_time': datetime.datetime(2025, 8, 15, 9, 13, 26, 803913, tzinfo=datetime.timezone.utc)}
2025-08-15 17:13:28 [scrapy.core.engine] INFO: Spider closed (finished)
PS D:\Experience\Myproject>
本文介绍了解决Scrapy框架中因未配置User-Agent而导致的错误方法。通过取消settings.py文件中相关行的注释并设置User-Agent字段，可以使爬虫正常获取网页源码。
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