selenium scrape:
我有一个spider,它抓取一个通过页面上的javascript重新加载内容的网站。为了移至下一页进行抓取,我一直在使用Selenium单击网站顶部的month链接。
问题是,即使我的代码按预期方式在每个链接中移动,爬虫也只会将第一个月(9月)的数据抓取几个月,然后返回此重复数据。
我该如何解决?
from selenium import webdriverclass GigsInScotlandMain(InitSpider):
name = 'gigsinscotlandmain'
allowed_domains = ["gigsinscotland.com"]
start_urls = ["http://www.gigsinscotland.com"]
def __init__(self):
InitSpider.__init__(self)
self.br = webdriver.Firefox()
def parse(self, response):
hxs = HtmlXPathSelector(response)
self.br.get(response.url)
time.sleep(2.5)
# Get the string for each month on the page.
months = hxs.select("//ul[@id='gigsMonths']/li/a/text()").extract()
for month in months:
link = self.br.find_element_by_link_text(month)
link.click()
time.sleep(5)
# Get all the divs containing info to be scraped.
listitems = hxs.select("//div[@class='listItem']")
for listitem in listitems:
item = GigsInScotlandMainItem()
item['artist'] = listitem.select("div[contains(@class, 'artistBlock')]/div[@class='artistdiv']/span[@class='artistname']/a/text()").extract()
#
# Get other data ...
#
yield item
回答:
问题是您正在重用HtmlXPathSelector
为初始响应定义的内容。从selenium浏览器重新定义它source_code
:
...for month in months:
link = self.br.find_element_by_link_text(month)
link.click()
time.sleep(5)
hxs = HtmlXPathSelector(self.br.page_source)
# Get all the divs containing info to be scraped.
listitems = hxs.select("//div[@class='listItem']")
...
以上是 selenium scrape: 的全部内容, 来源链接: utcz.com/qa/401239.html