python - Scrapy 关注并抓取下一页

Question

我遇到一个问题，我的 scrapy 蜘蛛都不会抓取网站，只是抓取一页并抓取。我的印象是 rules 成员变量对此负责，但我无法让它跟踪任何链接。我一直在关注这里的文档:http://doc.scrapy.org/en/latest/topics/spiders.html#crawlspider

我可能遗漏了什么，导致我的机器人无法爬行？

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

from Example.items import ExItem

class ExampleSpider(CrawlSpider):
    name = "example"
    allowed_domains = ["example.ac.uk"]
    start_urls = (
        'http://www.example.ac.uk',
    )

    rules = ( Rule (LinkExtractor(allow=("", ),),
                    callback="parse_items",  follow= True),
    )

Answer 1

将您的规则替换为以下规则:

rules = ( Rule(LinkExtractor(allow=('course-finder', ),restrict_xpaths=('//div[@class="pagination"]',)), callback='parse_items',follow=True), )