通过本文主要向大家介绍了scrapy抓取动态页面,scrapy抓取图片,scrapy抓取动态网页,python爬虫scrapy,python scrapy等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com
本文实例讲述了Python使用scrapy抓取网站sitemap信息的方法。分享给大家供大家参考。具体如下：
import re
from scrapy.spider import BaseSpider
from scrapy import log
from scrapy.utils.response import body_or_str
from scrapy.http import Request
from scrapy.selector import HtmlXPathSelector
class SitemapSpider(BaseSpider):
name = "SitemapSpider"
start_urls = ["http://www.domain.com/sitemap.xml"]
def parse(self, response):
nodename = 'loc'
text = body_or_str(response)
r = re.compile(r"(<%s[\s>])(.*?)(</%s>)"%(nodename,nodename),re.DOTALL)
for match in r.finditer(text):
url = match.group(2)
yield Request(url, callback=self.parse_page)
def parse_page(self, response):
hxs = HtmlXPathSelector(response)
#Mock Item
blah = Item()
#Do all your page parsing and selecting the elemtents you want
blash.divText = hxs.select('//div/text()').extract()[0]
yield blah
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希望本文所述对大家的Python程序设计有所帮助。
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