运行scrapy后无结果，提示debug信息显示403

2023-01-19 09:51:35 [scrapy.utils.log] INFO: Scrapy 2.7.1 started (bot: tl)
2023-01-19 09:51:35 [scrapy.utils.log] INFO: Versions: lxml 4.5.0.0, libxml2 2.9.9, cssselect 1.2.0, parsel 1.7.0, w3lib 2.1.1, Twisted 22.4.0, Python 3.7.6 (default, Jan  8 2020, 20:23:39) [MSC v.1916 64 bit (AMD64)], pyOpenSSL 23.0.0 (OpenSSL 3.0.7 1 Nov 2022), cryptography 39.0.0, Platform Windows-10-10.0.22000-SP0
2023-01-19 09:51:35 [scrapy.crawler] INFO: Overridden settings:
{'BOT_NAME': 'tl','NEWSPIDER_MODULE': 'tl.spiders','REQUEST_FINGERPRINTER_IMPLEMENTATION': '2.7','SPIDER_MODULES': ['tl.spiders'],'TWISTED_REACTOR': 'twisted.internet.asyncioreactor.AsyncioSelectorReactor'}
2023-01-19 09:51:35 [asyncio] DEBUG: Using selector: SelectSelector
2023-01-19 09:51:35 [scrapy.utils.log] DEBUG: Using reactor: twisted.internet.asyncioreactor.AsyncioSelectorReactor
2023-01-19 09:51:35 [scrapy.utils.log] DEBUG: Using asyncio event loop: asyncio.windows_events._WindowsSelectorEventLoop
2023-01-19 09:51:35 [scrapy.extensions.telnet] INFO: Telnet Password: 14fefb2358fcdeed
2023-01-19 09:51:35 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats','scrapy.extensions.telnet.TelnetConsole','scrapy.extensions.logstats.LogStats']
2023-01-19 09:51:35 [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.cookies.CookiesMiddleware','scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware','scrapy.downloadermiddlewares.stats.DownloaderStats']
2023-01-19 09:51:35 [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']
2023-01-19 09:51:35 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2023-01-19 09:51:35 [scrapy.core.engine] INFO: Spider opened
2023-01-19 09:51:35 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2023-01-19 09:51:35 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2023-01-19 09:51:35 [scrapy.core.engine] DEBUG: Crawled (403) <GET https://book.douban.com/top250> (referer: None)
2023-01-19 09:51:35 [scrapy.spidermiddlewares.httperror] INFO: Ignoring response <403 https://book.douban.com/top250>: HTTP status code is not handled or not allowed
2023-01-19 09:51:35 [scrapy.core.engine] INFO: Closing spider (finished)
2023-01-19 09:51:35 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 221,'downloader/request_count': 1,'downloader/request_method_count/GET': 1,'downloader/response_bytes': 309,'downloader/response_count': 1,'downloader/response_status_count/403': 1,'elapsed_time_seconds': 0.241555,'finish_reason': 'finished','finish_time': datetime.datetime(2023, 1, 19, 1, 51, 35, 777823),'httpcompression/response_bytes': 146,'httpcompression/response_count': 1,'httperror/response_ignored_count': 1,'httperror/response_ignored_status_count/403': 1,'log_count/DEBUG': 4,'log_count/INFO': 11,'response_received_count': 1,'scheduler/dequeued': 1,'scheduler/dequeued/memory': 1,'scheduler/enqueued': 1,'scheduler/enqueued/memory': 1,'start_time': datetime.datetime(2023, 1, 19, 1, 51, 35, 536268)}
2023-01-19 09:51:35 [scrapy.core.engine] INFO: Spider closed (finished)

修改user_agent后成功，但仍有红色提示

查找default_settings文件（输入from scrapy.settings import default_settings，然后按住Ctrl键，单击default_settings即可打开），修改其中的LOG_LEVEL的值为WARNING。