使用scrapy抓取并废弃一个完整的网站

import scrapy
from scrapy import Request

#scrapy crawl jobs9 -o jobs9.csv -t csv
class JobsSpider(scrapy.Spider):
name = "jobs9"
allowed_domains = ["vapedonia.com"]
start_urls = ["https://www.vapedonia.com/7-principiantes-kit-s-de-inicio-", 
              "https://www.vapedonia.com/10-cigarrillos-electronicos-", 
              "https://www.vapedonia.com/11-mods-potencia-", 
              "https://www.vapedonia.com/12-consumibles", 
              "https://www.vapedonia.com/13-baterias", 
              "https://www.vapedonia.com/23-e-liquidos", 
              "https://www.vapedonia.com/26-accesorios", 
              "https://www.vapedonia.com/31-atomizadores-reparables", 
              "https://www.vapedonia.com/175-alquimia-", 
              "https://www.vapedonia.com/284-articulos-en-liquidacion"]

def parse(self, response):
    products = response.xpath('//div[@class="product-container clearfix"]')
    for product in products:
        image = product.xpath('div[@class="center_block"]/a/img/@src').extract_first()
        link = product.xpath('div[@class="center_block"]/a/@href').extract_first()
        name = product.xpath('div[@class="right_block"]/p/a/text()').extract_first()
        price = product.xpath('div[@class="right_block"]/div[@class="content_price"]/span[@class="price"]/text()').extract_first().encode("utf-8")
        yield{'Image' : image, 'Link' : link, 'Name': name, 'Price': price}

    relative_next_url = response.xpath('//*[@id="pagination_next"]/a/@href').extract_first()
    absolute_next_url = "https://www.vapedonia.com" + str(relative_next_url)
    yield Request(absolute_next_url, callback=self.parse)

使用该代码，我正确地抓取页面及其子页面的产品 . 所有页面都已被抓取 .

如果我想废弃整个网站，我必须手动将类别网址放在“start_urls”中 . gppd的东西应该抓取那些网址以使其抓取动态 .

除了简单的分页抓取之外，如何将抓取与抓取混合？

谢谢 .

Now, I improve my code, here's the new code:

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

#scrapy crawl jobs10 -o jobs10.csv -t csv
class JobsSpider(scrapy.spiders.CrawlSpider):
name = "jobs10"
allowed_domains = ["vapedonia.com"]
start_urls = ["https://www.vapedonia.com/"]

rules = (Rule(LinkExtractor(allow=(r"https://www.vapedonia.com/\d+.*",)), callback='parse_category'), )

def parse_category(self, response):
    products = response.xpath('//div[@class="product-container clearfix"]')
    for product in products:
        image = product.xpath('div[@class="center_block"]/a/img/@src').extract_first()
        link = product.xpath('div[@class="center_block"]/a/@href').extract_first()
        name = product.xpath('div[@class="right_block"]/p/a/text()').extract_first()
        price = product.xpath('div[@class="right_block"]/div[@class="content_price"]/span[@class="price"]/text()').extract_first().encode("utf-8")
        yield{'Image' : image, 'Link' : link, 'Name': name, 'Price': price}

我所做的改变如下：

1-我导入Crawlspider，Rule和LinkExtractor

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

2- jobSpider类不再继承“scrapy.Spider” . 它现在继承自scrapy.spiders.CrawlSpider（已在上一步中导出）

3-“starts_urls”不再是由静态网址列表组成的，我们只需要使用域名，所以

start_urls = ["https://www.vapedonia.com/7-principiantes-kit-s-de-inicio-", 
    "https://www.vapedonia.com/10-cigarrillos-electronicos-", 
    "https://www.vapedonia.com/11-mods-potencia-", 
    "https://www.vapedonia.com/12-consumibles", 
    "https://www.vapedonia.com/13-baterias", 
    "https://www.vapedonia.com/23-e-liquidos", 
    "https://www.vapedonia.com/26-accesorios", 
    "https://www.vapedonia.com/31-atomizadores-reparables", 
    "https://www.vapedonia.com/175-alquimia-", 
    "https://www.vapedonia.com/284-articulos-en-liquidacion"]

被替换为

start_urls = ["https://www.vapedonia.com/"]

4-我们制定了规则

rules = (Rule(LinkExtractor(allow=(r"https://www.vapedonia.com/\d+.*",)), callback='parse_category'), )

我们不再称之为“解析”了“但是parse_category”

5-之前的分页爬行消失 . 所以，下一个代码就会消失

relative_next_url = response.xpath('//*[@id="pagination_next"]/a/@href').extract_first()
absolute_next_url = "https://www.vapedonia.com" + str(relative_next_url)
yield Request(absolute_next_url, callback=self.parse)

因此，当我看到它并且看起来非常合乎逻辑时，分页爬行过程被url爬行过程取代 .

但是......它不起作用，甚至使用编码（“utf-8”）的“价格”字段也不再起作用 .