python - scrapy 的问题 - 没有抓取任何项目

Question

我正在尝试删除此网站上的所有信息(“https://www.karl.com/experience/en/?yoox_storelocator_action=true&action=yoox_storelocator_get_all_stores”) 但我无法将其写入文件。我的文件甚至没有创建。这是我的代码:

import scrapy # Scraper
import json # JSON manipulation
import jsonpickle # Object serializer


class Karl(scrapy.Spider):

    # Needed var
    name = 'Karl' # Spider's name
    url = "https://www.karl.com/experience/en/?yoox_storelocator_action=true&action=yoox_storelocator_get_all_stores"

    start_url = [
        url,
    ]

    # Called from Scrapy itself
    def parse(self, response):
        filename = '%s.json' % self.name
        response = json.loads(response.body)
        response = jsonpickle.encode(response)

        with open(filename, 'w') as f: # Save the JSON file created
            f.write(response)

当我运行 scrapycrawl Karl 时，这些是我得到的最后几行:

2018-07-24 16:02:25 [scrapy.core.engine] INFO: Spider opened
2018-07-24 16:02:26 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 
pages/min), scraped 0 items (at 0 items/min)
2018-07-24 16:02:26 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6023
2018-07-24 16:02:26 [scrapy.core.engine] INFO: Closing spider (finished)
2018-07-24 16:02:26 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'finish_reason': 'finished',
 'finish_time': datetime.datetime(2018, 7, 24, 14, 2, 26, 861204),
 'log_count/DEBUG': 1,
 'log_count/INFO': 7,
 'memusage/max': 54804480,
 'memusage/startup': 54804480,
 'start_time': datetime.datetime(2018, 7, 24, 14, 2, 26, 550318)}

你们能帮我吗？我使用 scrapy 已经有一段时间了，这是第一次发生这种情况。谢谢

Answer 1

您的蜘蛛中出现错误:start_url 应该是 start_urls，另外您还需要一个变量 allowed_domains。也不需要另外声明url。

您的代码应该是:

class Karl(scrapy.Spider):

    name = 'Karl'
    start_urls = ["https://www.karl.com/experience/en/?yoox_storelocator_action=true&action=yoox_storelocator_get_all_stores"]
    allowed_domains = "karl.com"

## Snip ##

您还可以使用 scrapy genspider 生成一个新的蜘蛛，它将使用默认模板，在这种情况下会很有帮助。