DEBUG: Ignoring response <403 https://digital.ucas.com/coursedisplay/results/courses?studyYear=2024>: HTTP status code is not handled or not allowed

原因：被屏蔽了，在settings.py 里面配一下USER_AGENT（随便写一个就行）

USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36'

然后就畅通无阻了

2023-10-31 13:41:56 [scrapy.utils.log] INFO: Scrapy 2.10.0 started (bot: ucas_under)
2023-10-31 13:41:56 [scrapy.utils.log] INFO: Versions: lxml 4.9.3.0, libxml2 2.10.3, cssselect 1.2.0, parsel 1.8.1, w3lib 2.1.1, Twisted 22.10.0, Python 3.9.16 (main, May 17 2023, 17:49:16) [MSC v.1916 64 bit (AMD64)], pyOpenSSL 23.2.0 (OpenSSL 3.1.1 30 May 2023), cryptography 41.0.1, Platform Windows-10-10.0.19045-SP0
2023-10-31 13:41:56 [scrapy.addons] INFO: Enabled addons:
[]
2023-10-31 13:41:56 [scrapy.crawler] INFO: Overridden settings:
{'AUTOTHROTTLE_ENABLED': True,
 'BOT_NAME': 'ucas_under',
 'COOKIES_ENABLED': False,
 'DOWNLOAD_DELAY': 5,
 'FEED_EXPORT_ENCODING': 'utf-8',
 'LOG_FILE': 'log/ucas_under.log',
 'LOG_LEVEL': 'INFO',
 'NEWSPIDER_MODULE': 'ucas_under.spiders',
 'REQUEST_FINGERPRINTER_IMPLEMENTATION': '2.7',
 'SPIDER_MODULES': ['ucas_under.spiders'],
 'TWISTED_REACTOR': 'twisted.internet.asyncioreactor.AsyncioSelectorReactor',
 'USER_AGENT': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, '
               'like Gecko) Chrome/55.0.2883.87 Safari/537.36'}
2023-10-31 13:41:56 [scrapy.extensions.telnet] INFO: Telnet Password: d51ffe3ad1833b8d
2023-10-31 13:41:56 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.logstats.LogStats',
 'scrapy.extensions.throttle.AutoThrottle']
2023-10-31 13:41:56 [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']
2023-10-31 13:41:56 [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']
2023-10-31 13:41:56 [scrapy.middleware] INFO: Enabled item pipelines:
['ucas_under.pipelines.UcasUnderPipeline']
2023-10-31 13:41:56 [scrapy.core.engine] INFO: Spider opened
2023-10-31 13:41:56 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2023-10-31 13:41:56 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2023-10-31 13:41:59 [scrapy.core.engine] INFO: Closing spider (finished)
2023-10-31 13:41:59 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 604,
 'downloader/request_count': 1,
 'downloader/request_method_count/GET': 1,
 'downloader/response_bytes': 124343,
 'downloader/response_count': 1,
 'downloader/response_status_count/200': 1,
 'elapsed_time_seconds': 2.85669,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2023, 10, 31, 5, 41, 59, 106002),
 'httpcompression/response_bytes': 544169,
 'httpcompression/response_count': 1,
 'log_count/INFO': 10,
 'response_received_count': 1,
 'scheduler/dequeued': 1,
 'scheduler/dequeued/memory': 1,
 'scheduler/enqueued': 1,
 'scheduler/enqueued/memory': 1,
 'start_time': datetime.datetime(2023, 10, 31, 5, 41, 56, 249312)}
2023-10-31 13:41:59 [scrapy.core.engine] INFO: Spider closed (finished)