使用Xpath表达式抓取imdb网站

Question

在输出中将所有内容都设为none无法在代码中找出问题

在imdb 上删除前1000部评分电影的详细信息

链接：-https://www.imdb.com/search/title/?count=100&groups=top_1000&sort=用户评分

代码

# -*- coding: utf-8 -*-
import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule

class BestMoviesSpider(CrawlSpider):
name = 'best_movies'
allowed_domains = ['imdb.com']
start_urls = ['https://www.imdb.com/search/title/?count=100&groups=top_1000&sort=user_rating']

rules = (
Rule(LinkExtractor(restrict_xpaths="//h3[@class='lister-item-header']/a "), callback='parse_item', follow=True),
)
def parse_item(self, response):
yield{
'title' : response.xpath("//h1[@class='TitleHeader__TitleText-sc-1wu6n3d-0 cLNRlG']/text()").get(),
'year' : response.xpath("(//li/span[@class='TitleBlockMetaData__ListItemText-sc-12ein40-2 jedhex'])[1]/text()").get(),
'duration' : response.xpath("(//li[@class='ipc-inline-list__item'])[3]/text()").get(),
'rating' : response.xpath("(//span[@class='AggregateRatingButton__RatingScore-sc-1il8omz-1 fhMjqK'])[2]/text()").get(),
'director' : response.xpath("(//a[@class='ipc-metadata-list-item__list-content-item ipc-metadata-list-item__list-content-item--link'])[13]/text()").get(),
'movie_url' : response.url
}

Answer 1

您的项目的xpath选择几乎完全不正确，并且没有分页规则。这就是完整的解决方案。你也会理解我的解决方案中最酷的地方是如何进行CrawlSpider分页。

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

class BestMoviesSpider(CrawlSpider):
name = 'best_movies'
allowed_domains = ['imdb.com']
start_urls = ['https://www.imdb.com/search/title/?count=100&groups=top_1000&sort=user_rating']

rules = (
Rule(LinkExtractor(restrict_xpaths="//h3[@class='lister-item-header']/a "), callback='parse_item', follow=False),
Rule(LinkExtractor(restrict_xpaths='(//*[@class="lister-page-next next-page"])[1]'), callback='parse_item', follow=True),
)
def parse_item(self, response):
yield{
'title' : response.xpath('(//h1/text())[1]').get().strip(),
'year' : response.xpath('//span[@id="titleYear"]/a/text()').get(),
'duration' : response.xpath('normalize-space((//time/text())[1])').get(),
'rating' : response.xpath('//*[@itemprop="ratingValue"]/text()').get(),
'director' : response.xpath('(//*[@class="credit_summary_item"]/h4/following-sibling::a)[1]/text()').get(),
'movie_url' : response.url
}