寒假学习报告06

Posted 2021-03-11 baimafeima

学了使用scarpy框架进行爬虫，爬取了某网站的部分信息。

 

部分代码：

# -*- coding: utf-8 -*-
import scrapy
from dangdang01.items import Dangdang01Item
from scrapy.http import Request

class DdSpider(scrapy.Spider):
    name = ‘dd‘
    allowed_domains = [‘dangdang.com‘]
    start_urls = [‘http://search.dangdang.com/?key=%C5%AE%D7%B0&act=input&page_index=1‘]

    def parse(self, response):
        item = Dangdang01Item()
        item["title"] = response.xpath("//a[@name=‘itemlist-title‘]/@title").extract()
        item["link"] = response.xpath("//a[@name=‘itemlist-title‘]/@href").extract()
        item["comment"] = response.xpath("//a[@name=‘itemlist-review‘]/text()").extract()
        yield item
        for i in range(2,81):
            url = ‘http://search.dangdang.com/?key=%C5%AE%D7%B0&act=input&page_index=‘+str(i)
            yield Request(url,callback=self.parse)

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