1. spider文件

from scrapy.contrib.spiders import CrawlSpider, Rulefrom scrapy.contrib.linkextractors.sgml import SgmlLinkExtractorfrom scrapy.selector import HtmlXPathSelectoritem = DomzItem()image_urls = hxs.select('//img/@src').extract()item['image_urls'] = ["http:" + x for x in image_urls]return item

 

from scrapy.selector import HtmlXPathSelectorhxs = HtmlXPathSelector(response)

 

class MySpider(CrawlSpider): #控制下载速度    name = 'myspider'    download_delay = 2

 

$ scrapy crawl somespider -s JOBDIR=crawls/somespider-1   #这样开始下载之后可以Ctrl + C停止，恢复下载还是同样的命令 $ scrapy crawl somespider -s JOBDIR=crawls/somespider-1

 

 

name = "wikipedia"allowed_domains = ["wikipedia.org"]start_urls = [　　"http://en.wikipedia.org/wiki/Pune"]

 

 

 2. setting文件

ITEM_PIPELINES = ['scrapy.contrib.pipeline.images.ImagesPipeline']IMAGES_STORE= '...'

 

3. item 文件

image_urls = Field() images = Field()