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我正在遵循scrapy教程here。我相信,我已经得到了与本教程相同的代码,但是我的刮板只刮掉了第一页,然后给出了关于我的第一个Request
到另一个页面的消息并结束。我是否可能在错误的地方得到了第二个yield
声明?Scrapy刮刀不刮过第1页
DEBUG:过滤器异地请求 'newyork.craigslist.org':https://newyork.craigslist.org/search/egr?s=120>
2017年5月20日18时21分:31 [scrapy.core.engine] INFO:关闭蜘蛛(成品)
这是我的代码:
import scrapy
from scrapy import Request
class JobsSpider(scrapy.Spider):
name = "jobs"
allowed_domains = ["https://newyork.craigslist.org/search/egr"]
start_urls = ['https://newyork.craigslist.org/search/egr/']
def parse(self, response):
jobs = response.xpath('//p[@class="result-info"]')
for job in jobs:
title = job.xpath('a/text()').extract_first()
address = job.xpath('span[@class="result-meta"]/span[@class="result-hood"]/text()').extract_first("")[2:-1]
relative_url = job.xpath('a/@href').extract_first("")
absolute_url = response.urljoin(relative_url)
yield {'URL': absolute_url, 'Title': title, 'Address': address}
# scrape all pages
next_page_relative_url = response.xpath('//a[@class="button next"]/@href').extract_first()
next_page_absolute_url = response.urljoin(next_page_relative_url)
yield Request(next_page_absolute_url, callback=self.parse)