scrapy meta={"item": item} 重载时报错 KeyError: 'item'

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待解决

176****5578 3年前发布

悬赏：10.0 元

问题详情：分类: python

import scrapy
from tietu51.items import Tietu51Item
import copy
from scrapy import Request


#from ..items import TietuItem

class Spider(scrapy.Spider):
    name = "tietu51"
    allowed_domains = ["51tietu.net"]
    start_urls = (
        ['https://www.51tietu.net/pic/']
    )

    def parse_herf(self, response):
        headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36'

        }

        url = response.xpath('.//div[@class="box-img"]/a/@href').extract()
        for li in url:
            item = Tietu51Item()
            targs= 'https://www.51tietu.net' + li
            item['targs'] = targs
            yield scrapy.Request(url=targs, callback=self.parse, meta={'item': item})


        #yield scrapy.Request(url=item['targs'], meta={"item": item}, callback=self.parse,headers=headers, dont_filter=True)

    def parse(self, response):
        item = response.meta["item"]
        page_lists = response.xpath('//*[@id="pic"]/div[1]/p/img/@src').extract()
        item['image_urls'] = page_lists
        yield item

D:\untitled4\venv\Scripts\python.exe D:/scrapy/tietu51/tietu51/begin.py
2021-11-13 19:00:16 [scrapy.utils.log] INFO: Scrapy 2.5.1 started (bot: tietu51)
2021-11-13 19:00:16 [scrapy.utils.log] INFO: Versions: lxml 4.6.3.0, libxml2 2.9.5, cssselect 1.1.0, parsel 1.6.0, w3lib 1.22.0, Twisted 21.7.0, Python 3.8.3 (tags/v3.8.3:6f8c832, May 13 2020, 22:37:02) [MSC v.1924 64 bit (AMD64)], pyOpenSSL 21.0.0 (OpenSSL 1.1.1l  24 Aug 2021), cryptography 35.0.0, Platform Windows-10-10.0.17763-SP0
2021-11-13 19:00:16 [scrapy.utils.log] DEBUG: Using reactor: twisted.internet.selectreactor.SelectReactor
2021-11-13 19:00:16 [scrapy.crawler] INFO: Overridden settings:
{'BOT_NAME': 'tietu51',
 'NEWSPIDER_MODULE': 'tietu51.spiders',
 'SPIDER_MODULES': ['tietu51.spiders']}
2021-11-13 19:00:16 [scrapy.extensions.telnet] INFO: Telnet Password: 7c5733e91587c901
2021-11-13 19:00:16 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.logstats.LogStats']
2021-11-13 19:00:16 [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']
2021-11-13 19:00:16 [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']
2021-11-13 19:00:16 [scrapy.middleware] INFO: Enabled item pipelines:
['tietu51.pipelines.Getlixiaoranpipeline']
2021-11-13 19:00:16 [scrapy.core.engine] INFO: Spider opened
2021-11-13 19:00:16 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2021-11-13 19:00:16 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2021-11-13 19:00:16 [scrapy.downloadermiddlewares.redirect] DEBUG: Redirecting (301) to <GET https://www.51tietu.net/pic/%E9%BB%91%E4%B8%9D%E7%BE%8E%E8%85%BF/> from <GET https://www.51tietu.net/pic/%E9%BB%91%E4%B8%9D%E7%BE%8E%E8%85%BF>
2021-11-13 19:00:17 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://www.51tietu.net/pic/%E9%BB%91%E4%B8%9D%E7%BE%8E%E8%85%BF/> (referer: None)
2021-11-13 19:00:17 [scrapy.core.scraper] ERROR: Spider error processing <GET https://www.51tietu.net/pic/%E9%BB%91%E4%B8%9D%E7%BE%8E%E8%85%BF/> (referer: None)
Traceback (most recent call last):
  File "D:\untitled4\venv\lib\site-packages\scrapy\utils\defer.py", line 120, in iter_errback
    yield next(it)
  File "D:\untitled4\venv\lib\site-packages\scrapy\utils\python.py", line 353, in __next__
    return next(self.data)
  File "D:\untitled4\venv\lib\site-packages\scrapy\utils\python.py", line 353, in __next__
    return next(self.data)
  File "D:\untitled4\venv\lib\site-packages\scrapy\core\spidermw.py", line 56, in _evaluate_iterable
    for r in iterable:
  File "D:\untitled4\venv\lib\site-packages\scrapy\spidermiddlewares\offsite.py", line 29, in process_spider_output
    for x in result:
  File "D:\untitled4\venv\lib\site-packages\scrapy\core\spidermw.py", line 56, in _evaluate_iterable
    for r in iterable:
  File "D:\untitled4\venv\lib\site-packages\scrapy\spidermiddlewares\referer.py", line 342, in <genexpr>
    return (_set_referer(r) for r in result or ())
  File "D:\untitled4\venv\lib\site-packages\scrapy\core\spidermw.py", line 56, in _evaluate_iterable
    for r in iterable:
  File "D:\untitled4\venv\lib\site-packages\scrapy\spidermiddlewares\urllength.py", line 40, in <genexpr>
    return (r for r in result or () if _filter(r))
  File "D:\untitled4\venv\lib\site-packages\scrapy\core\spidermw.py", line 56, in _evaluate_iterable
    for r in iterable:
  File "D:\untitled4\venv\lib\site-packages\scrapy\spidermiddlewares\depth.py", line 58, in <genexpr>
    return (r for r in result or () if _filter(r))
  File "D:\untitled4\venv\lib\site-packages\scrapy\core\spidermw.py", line 56, in _evaluate_iterable
    for r in iterable:
  File "D:\scrapy\tietu51\tietu51\spiders\spider.py", line 33, in parse
    item = response.meta["item"]
KeyError: 'item'
2021-11-13 19:00:17 [scrapy.core.engine] INFO: Closing spider (finished)
2021-11-13 19:00:17 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 511,
 'downloader/request_count': 2,
 'downloader/request_method_count/GET': 2,
 'downloader/response_bytes': 61409,
 'downloader/response_count': 2,
 'downloader/response_status_count/200': 1,
 'downloader/response_status_count/301': 1,
 'elapsed_time_seconds': 0.806802,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2021, 11, 13, 11, 0, 17, 209827),
 'httpcompression/response_bytes': 232077,
 'httpcompression/response_count': 1,
 'log_count/DEBUG': 2,
 'log_count/ERROR': 1,
 'log_count/INFO': 10,
 'response_received_count': 1,
 'scheduler/dequeued': 2,
 'scheduler/dequeued/memory': 2,
 'scheduler/enqueued': 2,
 'scheduler/enqueued/memory': 2,
 'spider_exceptions/KeyError': 1,
 'start_time': datetime.datetime(2021, 11, 13, 11, 0, 16, 403025)}
2021-11-13 19:00:17 [scrapy.core.engine] INFO: Spider closed (finished)

Process finished with exit code 0