web crawling(plus10)scrapy 4

E:\m\f1>cd ..\

E:\m>scrapy startproject qsauto
New Scrapy project ‘qsauto‘, using template directory ‘d:\\users\\administrator\\appdata\\local\\programs\\python\\python36-32\\lib\\site-packages\\scrapy\\templates\\project‘, created in:
E:\m\qsauto

You can start your first spider with:
cd qsauto
scrapy genspider example example.com

E:\m>cd qsauto/

E:\m\qsauto>scrapy genspider -l
Available templates:
basic
crawl
csvfeed
xmlfeed

E:\m\qsauto>scrapy genspider -t crawl weisuen qiushibaike.com

weisuen.py:

# -*- coding: utf-8 -*-
import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule
from scrapy.http import Request
from qsauto.items import QsautoItem


class WeisuenSpider(CrawlSpider):
    name = ‘weisuen‘
    allowed_domains = [‘qiushibaike.com‘]
    ‘‘‘
    start_urls = [‘http://www.qiushibaike.com/‘]
    ‘‘‘

    rules = (
        Rule(LinkExtractor(allow=‘article‘), callback=‘parse_item‘, follow=True),
    )

    def start_requests(self):
        ua = {
            "User-Agent": ‘Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.22 Safari/537.36 SE 2.X MetaSr 1.0‘}
        yield Request(‘http://www.qiushibaike.com/‘, headers=ua)
    def parse_item(self, response):
        i = QsautoItem()
        #i[‘domain_id‘] = response.xpath(‘//input[@id="sid"]/@value‘).extract()
        #i[‘name‘] = response.xpath(‘//div[@id="name"]‘).extract()
        #i[‘description‘] = response.xpath(‘//div[@id="description"]‘).extract()
        i["content"]=response.xpath("//div[@class=‘content‘]/text()").extract()
        i["link"]=response.xpath(‘//a[@class="contentHerf"]/@href‘).extract()
        print(i["content"])
        print(i["link"])
        print("")
        return i

web crawling(plus10)scrapy 4

原文：http://www.cnblogs.com/rabbittail/p/7637343.html