Scrapy ：抓取了 0 个页面（在 0 pages/min），抓取了 0 个项目

Question

我是 python 的新手，我正在尝试使用 scrapy 蜘蛛抓取 html，但响应 returns 什么也没有。想知道这里出了什么问题吗？提前感谢您的帮助。

url:

https://directory.lubesngreases.com/LngMain/includes/themes/MuraBootstrap3/remote/api/?fn=searchcompany&name&query&STATE&brand&COUNTRY&query2&mode=advanced&filters=%7B%7D&page=1&datatype=html

我的蜘蛛：

import scrapy
 
class lngspider(scrapy.Spider):
     name = 'scrapylng'
     user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36'
     start_urls = ['https://directory.lubesngreases.com/LngMain/includes/themes/MuraBootstrap3/remote/api?fn=searchcompany&name&query&STATE&brand&COUNTRY&query2&mode=advanced&filters=%7B%7D&page=1&datatype=html']
 
     def parse(self,response):
         for company in response.css('div.company-item row'):
             yield{
                 'name' : products.css('class.CompanyHead').get()
             }

输出：

    (workenv) C:\Users\seanl\lngscraper\lngscraper>scrapy crawl scrapylng            
2022-05-26 21:53:12 [scrapy.utils.log] INFO: Scrapy 2.6.1 started (bot: lngscraper)
2022-05-26 21:53:12 [scrapy.utils.log] INFO: Versions: lxml 4.8.0.0, libxml2 2.9.12, cssselect 1.1.0, parsel 1.6.0, w3lib 1.22.0, Twisted 22.4.0, Python 3.10.4 (tags/v3.10.4:9d38120, Mar 23 2022, 23:13:41) [MSC v.1929 64 bit (AMD64)], pyOpenSSL 22.0.0 (OpenSSL 3.0.3 3 May 2022), cryptography 37.0.2, Platform Windows-10-10.0.19043-SP0
2022-05-26 21:53:12 [scrapy.crawler] INFO: Overridden settings:
{'BOT_NAME': 'lngscraper',
 'NEWSPIDER_MODULE': 'lngscraper.spiders',
 'SPIDER_MODULES': ['lngscraper.spiders']}
2022-05-26 21:53:12 [scrapy.utils.log] DEBUG: Using reactor: twisted.internet.selectreactor.SelectReactor
2022-05-26 21:53:12 [scrapy.extensions.telnet] INFO: Telnet Password: 5b71199b20af863b
2022-05-26 21:53:12 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.logstats.LogStats']
2022-05-26 21:53:12 [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']
2022-05-26 21:53:12 [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']
2022-05-26 21:53:12 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2022-05-26 21:53:12 [scrapy.core.engine] INFO: Spider opened
2022-05-26 21:53:12 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2022-05-26 21:53:12 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2022-05-26 21:53:13 [scrapy.downloadermiddlewares.redirect] DEBUG: Redirecting (301) to <GET https://directory.lubesngreases.com/LngMain/includes/themes/MuraBootstrap3/remote/api/?fn=searchcompany&name&query&STATE&brand&COUNTRY&query2&mode=advanced&filters=%7B%7D&page=1&datatype=html> from <GET https://directory.lubesngreases.com/LngMain/includes/themes/MuraBootstrap3/remote/api?fn=searchcompany&name&query&STATE&brand&COUNTRY&query2&mode=advanced&filters=%7B%7D&page=1&datatype=html>
2022-05-26 21:53:15 [filelock] DEBUG: Attempting to acquire lock 2667801190576 on C:\Users\seanl\pythonscripts\workenv\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-05-26 21:53:15 [filelock] DEBUG: Lock 2667801190576 acquired on C:\Users\seanl\pythonscripts\workenv\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-05-26 21:53:15 [filelock] DEBUG: Attempting to release lock 2667801190576 on C:\Users\seanl\pythonscripts\workenv\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-05-26 21:53:15 [filelock] DEBUG: Lock 2667801190576 released on C:\Users\seanl\pythonscripts\workenv\lib\site-packages\tldextract\.suffix_cache/publicsuffix.org-tlds\de84b5ca2167d4c83e38fb162f2e8738.tldextract.json.lock
2022-05-26 21:53:15 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://directory.lubesngreases.com/LngMain/includes/themes/MuraBootstrap3/remote/api/?fn=searchcompany&name&query&STATE&brand&COUNTRY&query2&mode=advanced&filters=%7B%7D&page=1&datatype=html> (referer: None)
2022-05-26 21:53:15 [scrapy.core.engine] INFO: Closing spider (finished)
2022-05-26 21:53:15 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 925,
 'downloader/request_count': 2,
 'downloader/request_method_count/GET': 2,
 'downloader/response_bytes': 15651,
 'downloader/response_count': 2,
 'downloader/response_status_count/200': 1,
 'downloader/response_status_count/301': 1,
 'elapsed_time_seconds': 2.974988,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2022, 5, 26, 13, 53, 15, 282689),
 'httpcompression/response_bytes': 67300,
 'httpcompression/response_count': 1,
 'log_count/DEBUG': 7,
 'log_count/INFO': 10,
 'response_received_count': 1,
 'scheduler/dequeued': 2,
 'scheduler/dequeued/memory': 2,
 'scheduler/enqueued': 2,
 'scheduler/enqueued/memory': 2,
 'start_time': datetime.datetime(2022, 5, 26, 13, 53, 12, 307701)}
2022-05-26 21:53:15 [scrapy.core.engine] INFO: Spider closed (finished)

Answer 1

我在 parse() 中添加了 print('url:', response.url)，我看到它运行了这个函数。

第一个问题是你用错了CSS。

这个 div 有两个类 company-item 和 row 并且你必须使用两个点（没有 space）

div.company-item.row

您使用 div.company-item row 表示 <div class="company-item"> <row>

第二个问题是您使用了不存在的变量 product。

必须是company.css()而不是product.css()

第三个问题是span，而不是company.css()中的class，否则你应该跳过class

company.css('span.CompanyHead')

company.css('.CompanyHead')

但这给出了 HTML 并且您需要 pseudo-selector ::text 才能仅从 HTML

获取文本

company.css('span.CompanyHead::text')

import scrapy
 
class lngspider(scrapy.Spider):
    
    name = 'scrapylng'
    user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36'
    start_urls = ['https://directory.lubesngreases.com/LngMain/includes/themes/MuraBootstrap3/remote/api?fn=searchcompany&name&query&STATE&brand&COUNTRY&query2&mode=advanced&filters=%7B%7D&page=1&datatype=html']
 
    def parse(self, response):
    
        print('url:', response.url)

        # see HTML
        #print(response.body.decode())

        # save HTML in file to see it later in browser
        #with open('output.html', 'wb') as f:
        #    f.write(response.body)
            
        for company in response.css('div.company-item.row'):
            name = company.css('span.CompanyHead::text').get()
            
            print('name:', name)
            
            yield {
                'name': name,
            }
             
# --- run without project and save in `output.csv` ---

from scrapy.crawler import CrawlerProcess

c = CrawlerProcess({
    'FEEDS': {'output.csv': {'format': 'csv'}},
})
c.crawl(lngspider)
c.start()

Scrapy ：抓取了 0 个页面（在 0 pages/min），抓取了 0 个项目

Scrapy : Crawled 0 pages (at 0 pages/min), scraped 0 items

python

response

scrapy