Scrapy 跟踪所有链接并获取状态

Question

我想关注网站的所有链接并获取每个链接的状态，例如 404,200。我试过这个：

from scrapy.contrib.spiders import CrawlSpider, Rule
from scrapy.contrib.linkextractors import LinkExtractor

class someSpider(CrawlSpider):
  name = 'linkscrawl'
  item = []
  allowed_domains = ['mysite.com']
  start_urls = ['//mysite.com/']

  rules = (Rule (LinkExtractor(), callback="parse_obj", follow=True),
  )

  def parse_obj(self,response):
    item = response.url
    print(item)

我可以在控制台上看到没有状态码的链接，例如：

mysite.com/navbar.html
mysite.com/home
mysite.com/aboutus.html
mysite.com/services1.html
mysite.com/services3.html
mysite.com/services5.html

但是如何将所有链接的状态保存在文本文件中？

Answer 1

我解决了这个问题，如下所示。希望这对需要的人有所帮助。

import scrapy
from scrapy.contrib.spiders import CrawlSpider, Rule
from scrapy.contrib.linkextractors import LinkExtractor

class LinkscrawlItem(scrapy.Item):
    # define the fields for your item here like:
    link = scrapy.Field()
    attr = scrapy.Field()

class someSpider(CrawlSpider):
  name = 'linkscrawl'
  item = []

  allowed_domains = ['mysite.com']
  start_urls = ['//www.mysite.com/']

  rules = (Rule (LinkExtractor(), callback="parse_obj", follow=True),
  )

  def parse_obj(self,response):
    #print(response.status)
    item = LinkscrawlItem()
    item["link"] = str(response.url)+":"+str(response.status)
    # item["link_res"] = response.status
    # status = response.url
    # item = response.url
    # print(item)
    filename = 'links.txt'
    with open(filename, 'a') as f:
      f.write('\n'+str(response.url)+":"+str(response.status)+'\n')
    self.log('Saved file %s' % filename)