scrapy '我小蜘蛛没有爬网页'爬了0页,刮了0条信息似乎找不到问题所在

sg3maiej  于 2022-11-09  发布在  其他
关注(0)|答案(1)|浏览(147)

在我的控制台上运行“scrapy crawl newegg”时,我被“爬了0页(0页/分钟),刮了0个项目(0个项目/分钟)”击中。我试着查找了许多修复程序,但没有一个成功。任何帮助都是感激的,谢谢。


# web scrapes newegg page for product price

import scrapy

class NeweggSpider(scrapy.Spider):
    name = 'newegg'
    start_urls = [
        'https://www.newegg.com/team-32gb-288-pin-ddr4-sdram/p/N82E16820331426?Item=N82E16820331426&cm_sp=Homepage_SS-_-P0_20-331-426-_-08282022'
    ]

    def parse(self, response):

        for product in response.css('div.page-section-innder'):
            yield {
                'name': product.css('h1.prodcut-title::text').get(),
                'price': product.css('li.price-current strong::text').get()
            }

这是运行“scrapy crawl neweg”后的控制台日志。正如您所看到的,它正在抓取0页和抓取0项,我无法查看控制台日志以了解错误。

2022-08-28 22:12:38 [scrapy.utils.log] INFO: Scrapy 2.6.2 started (bot: newegg)
2022-08-28 22:12:38 [scrapy.utils.log] INFO: Versions: lxml 4.9.1.0, libxml2 2.9.12, cssselect 1.1.0, parsel 1.6.0, w3lib 2.0.1, Twisted 22.4.0, Python 3.10.6 (tags/v3.10.6:9c7b4bd, Aug  1 2022, 21:53:49) [MSC v.1932 64 bit (AMD64)], pyOpenSSL 22.0.0 (OpenSSL 3.0.5 5 Jul 2022), cryptography 37.0.4, Platform Windows-10-10.0.19044-SP0
2022-08-28 22:12:38 [scrapy.crawler] INFO: Overridden settings:
{'BOT_NAME': 'newegg',
 'NEWSPIDER_MODULE': 'newegg.spiders',
 'ROBOTSTXT_OBEY': True,
 'SPIDER_MODULES': ['newegg.spiders']}
2022-08-28 22:12:38 [scrapy.utils.log] DEBUG: Using reactor: twisted.internet.selectreactor.SelectReactor
2022-08-28 22:12:38 [scrapy.extensions.telnet] INFO: Telnet Password: 5d3a6b25365f91b1
2022-08-28 22:12:38 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.logstats.LogStats']
2022-08-28 22:12:38 [scrapy.middleware] INFO: Enabled downloader middlewares:
['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']
2022-08-28 22:12:38 [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']
2022-08-28 22:12:38 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2022-08-28 22:12:38 [scrapy.core.engine] INFO: Spider opened
2022-08-28 22:12:38 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2022-08-28 22:12:38 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2022-08-28 22:12:38 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.newegg.com/robots.txt> (referer: None)
2022-08-28 22:12:38 [filelock] DEBUG: Attempting to acquire lock 2120593134576 on C:\Users\Casey\AppData\Local\Programs\Python\Python310\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-08-28 22:12:38 [filelock] DEBUG: Lock 2120593134576 acquired on C:\Users\Casey\AppData\Local\Programs\Python\Python310\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-08-28 22:12:38 [filelock] DEBUG: Attempting to release lock 2120593134576 on C:\Users\Casey\AppData\Local\Programs\Python\Python310\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-08-28 22:12:38 [filelock] DEBUG: Lock 2120593134576 released on C:\Users\Casey\AppData\Local\Programs\Python\Python310\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-08-28 22:12:38 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.newegg.com/team-32gb-288-pin-ddr4-sdram/p/N82E16820331426?Item=N82E16820331426&cm_sp=Homepage_SS-_-P0_20-331-426-_-08282022> (referer: None)
2022-08-28 22:12:38 [scrapy.core.engine] INFO: Closing spider (finished)
2022-08-28 22:12:38 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 550,
 'downloader/request_count': 2,
 'downloader/request_method_count/GET': 2,
 'downloader/response_bytes': 42150,
 'downloader/response_count': 2,
 'downloader/response_status_count/200': 2,
 'elapsed_time_seconds': 0.25123,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2022, 8, 29, 3, 12, 38, 921346),
 'httpcompression/response_bytes': 181561,
 'httpcompression/response_count': 2,
 'log_count/DEBUG': 7,
 'log_count/INFO': 10,
 'response_received_count': 2,
 'robotstxt/request_count': 1,
 'robotstxt/response_count': 1,
 'robotstxt/response_status_count/200': 1,
 'scheduler/dequeued': 1,
 'scheduler/dequeued/memory': 1,
 'scheduler/enqueued': 1,
 'scheduler/enqueued/memory': 1,
 'start_time': datetime.datetime(2022, 8, 29, 3, 12, 38, 670116)}
2022-08-28 22:12:38 [scrapy.core.engine] INFO: Spider closed (finished)
kyvafyod

kyvafyod1#

你的第一个css选择器中有一个错字,但是即使修复了这个错误,你的选择器似乎还是不起作用。它成功地抓取了价格的一半,但是它似乎对产品名称或价格字段的另一半不起作用。
名称选择器的一个修正方法是将选择器直接应用于响应,而不是将其从产品链接起来,而一个更好的可以获取整个价格文本的解决方案是使用XPath表达式。
例如:


# web scrapes newegg page for product price

import scrapy

class NeweggSpider(scrapy.Spider):
    name = 'newegg'
    start_urls = [
        'https://www.newegg.com/team-32gb-288-pin-ddr4-sdram/p/N82E16820331426?Item=N82E16820331426&cm_sp=Homepage_SS-_-P0_20-331-426-_-08282022'
    ]

    def parse(self, response):
        price = response.xpath("//li[@class='price-current']//*/text()").getall()
        price_string = ''.join(price)
        yield {
            "name": response.css("h1.product-title::text").get(),
            "price": price_string
        }

输出

{'name': 'Team T-FORCE DARK Za 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory (FOR AMD) Model TDZAD432G3600HC18JDC01', 
'price': '89.99'}

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