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仅用与备忘录
____movie.py
import scrapy
from moviePro.items import MovieproItem
class MovieSpider(scrapy.Spider):
name = ‘movie’
#allowed_domains = [‘www.xxx.com’]
start_urls = [‘http://www.4567kan.com/frim/index1.html’]
url=‘http://www.4567kan.com/frim/index1-%d.html’
pageNum=2
def parse(self, response):
li_list = response.xpath(’/html/body/div[1]/div/div/div/div[2]/ul/li’)
for li in li_list:
title=li.xpath(’./div/a/@title’).extract_first()
detail_url=‘http://www.4567kan.com’+li.xpath(’./div/a/@href’).extract_first()
item=MovieproItem()
item[‘title’]=title
#对详情页url发起请求,callback的self.parse用于反馈首页
#meta作用为可以将meta字典传递给callback
yield scrapy.Request(url=detail_url,callback=self.parse_detail,meta={‘item’:item})
#拿到前四页页面源码数据
if self.pageNum<5:
new_url=format(self.url%self.pageNum)
self.pageNum+=1
yield scrapy.Request(url=new_url,callback=self.parse)
#parse_detail用于解析详情页的数据
def parse_detail(self,response):
#接受传递过来的meta，实现传递参数
item=response.meta[‘item’]
desc=response.xpath(’/html/body/div[1]/div/div/div/div[2]/p[5]/span[2]’).extract_first()
item[‘desc’]=desc
yield item
____________________item.py
import scrapy
class MovieproItem(scrapy.Item):
# define the fields for your item here like:
# name = scrapy.Field()
title=scrapy.Field()
desc=scrapy.Field()
________________________pipeline.py
class MovieproPipeline:
def process_item(self, item, spider):
print(item)
return item
_______________________setting.py
ITEM_PIPELINES = {
‘moviePro.pipelines.MovieproPipeline’: 300,
}
BOT_NAME = ‘moviePro’
SPIDER_MODULES = [‘moviePro.spiders’]
NEWSPIDER_MODULE = ‘moviePro.spiders’
USER_AGENT = ‘Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4343.0 Safari/537.36’
ROBOTSTXT_OBEY = False
LOG_LEVEL=‘ERROR’
持久化储存略————————————
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