scrapy 采集列表页和内容页问题 - V2EX
V2EX = way to explore
V2EX 是一个关于分享和探索的地方
现在注册
已注册用户请  登录
willme105
V2EX    问与答

scrapy 采集列表页和内容页问题

  •  
  •   willme105 2015-01-14 06:30:33 +08:00 4383 次点击
    这是一个创建于 3939 天前的主题,其中的信息可能已经有所发展或是发生改变。

    打算在列表页采集缩略图和标题,内容页采集分类和标签。
    不过一直采集不成功。请问该如何写这个spider。

    from scrapy.contrib.spiders import CrawlSpider, Rule
    from scrapy.contrib.linkextractors.sgml import SgmlLinkExtractor
    from scrapy.selector import Selector

    from my.items import MyItem
    import re
    from scrapy.http import Request
    from scrapy.selector import Selector
    from scrapy.selector import HtmlXPathSelector

    class MySpider(CrawlSpider):
    name = 'xxx'
    allowed_domains = ['xxxx.com']
    start_urls = ['http://xxxxxx.com']

    def parse(self, response): item = MyItem() sel = Selector(response) videos = sel.xpath('//ul[@class="listThumbs"]/li') for v in videos: item['img']=v.xpath('a[@class="thumb"]/img/@src').extract()[0] item['title'] = v.xpath('a[@class="title"]/text()').extract()[0] item['url'] = v.xpath('a[@class="thumb"]/@href').extract()[0] yield item def parse_page(self,response): item=MyItem() hxs=Selector(response) cate=hxs.xpath('//div[@class="multiTag"]/ul/li') for c in cate: item['category']=c.xpath('a/text()').extract()[0] yield item 
    2 条回复    2015-01-19 04:03:23 +08:00
    huangguoji
        1
    huangguoji  
       2015-01-14 10:16:23 +08:00
    def parse(self, response):
    item = MyItem()
    sel = Selector(response)
    videos = sel.xpath('//ul[@class="listThumbs"]/li')
    for v in videos:
    item['img']=v.xpath('a[@class="thumb"]/img/@src').extract()[0]
    item['title'] = v.xpath('a[@class="title"]/text()').extract()[0]
    item['url'] = v.xpath('a[@class="thumb"]/@href').extract()[0]
    yield Request(item['url'],callback=self.parse_page,meta={"item":item})
    def parse_page(self,response):
    item= response.meta["item"]
    hxs=Selector(response)
    cate=hxs.xpath('//div[@class="multiTag"]/ul/li')
    for c in cate:
    item['category']=c.xpath('a/text()').extract()[0]
    yield item
    willme105
        2
    willme105  
    OP
       2015-01-19 04:03:23 +08:00
    @huangguoji 这样做还是有问题,列表页显示的内容都一样,而且都是最后一条信息。但内容页获取的信息是对的。请问改怎么办
    关于     帮助文档     自助推广系统     博客     API     FAQ     Solana     6138 人在线   最高记录 6679       Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 25ms UTC 02:16 PVG 10:16 LAX 19:16 JFK 22:16
    Do have faith in what you're doing.
    ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86