下面: IMDB scrapy get all movie data
response.xpath(" // * [@类='结果'] / TR / TD [3]&#34)
返回空列表。我试着把它改成:
response.xpath(" // * [contains(@class,' chart full-width')] / tbody / tr")
没有成功。
请帮忙吗?感谢。
答案 0 :(得分:0)
我没有时间彻底审查IMDB scrapy get all movie data,但我已经掌握了它的要点。问题陈述是从给定站点获取所有电影数据。它涉及两件事。 首先是浏览包含当年所有电影列表的所有网页。虽然第二一个是获取每部电影的链接,然后在这里你做自己的魔术。
您遇到的问题是获取每部电影链接的xpath。这很可能是由于网站结构的变化(我没有时间来验证可能存在的差异)。无论如何,以下是您需要的[^[:alpha:]]
。
第一:
我们将xpath
班级div
作为里程碑,并在其子级中找到nav
班级。
lister-page-next next-page
这将给出:下一页的链接 |如果在最后一页(因为下一页标签不存在),则返回response.xpath("//div[@class='nav']/div/a[@class='lister-page-next next-page']/@href").extract_first()
第二次:
这是OP的原始疑问。
None
现在您需要做的就是遍历每个#Get the list of the container having the title, etc
list = response.xpath("//div[@class='lister-item-content']")
#From the container extract the required links
paths = list.xpath("h3[@class='lister-item-header']/a/@href").extract()
元素并请求页面。
答案 1 :(得分:0)
感谢您的回答。我最终像你这样使用你的xPath:
import scrapy
from scrapy.spiders import CrawlSpider, Rule
from scrapy.linkextractors import LinkExtractor
from crawler.items import MovieItem
IMDB_URL = "http://imdb.com"
class IMDBSpider(CrawlSpider):
name = 'imdb'
# in order to move the next page
rules = (Rule(LinkExtractor(allow=(), restrict_xpaths=("//div[@class='nav']/div/a[@class='lister-page-next next-page']",)),
callback="parse_page", follow= True),)
def __init__(self, start=None, end=None, *args, **kwargs):
super(IMDBSpider, self).__init__(*args, **kwargs)
self.start_year = int(start) if start else 1874
self.end_year = int(end) if end else 2017
# generate start_urls dynamically
def start_requests(self):
for year in range(self.start_year, self.end_year+1):
# movies are sorted by number of votes
yield scrapy.Request('http://www.imdb.com/search/title?year={year},{year}&title_type=feature&sort=num_votes,desc'.format(year=year))
def parse_page(self, response):
content = response.xpath("//div[@class='lister-item-content']")
paths = content.xpath("h3[@class='lister-item-header']/a/@href").extract() # list of paths of movies in the current page
# all movies in this page
for path in paths:
item = MovieItem()
item['MainPageUrl'] = IMDB_URL + path
request = scrapy.Request(item['MainPageUrl'], callback=self.parse_movie_details)
request.meta['item'] = item
yield request
# make sure that the start_urls are parsed as well
parse_start_url = parse_page
def parse_movie_details(self, response):
pass # lots of parsing....
使用scrapy crawl imdb -a start=<start-year> -a end=<end-year>