我正在使用Splash 2.0.2 + Scrapy 1.0.5 + Scrapyjs 0.1.1
,我仍然无法通过点击呈现javascript。以下是一个示例网址https://olx.pt/anuncio/loja-nova-com-250m2-garagem-em-box-fechada-para-arrumos-IDyTzAT.html#c49d3d94cf
我仍然没有提供电话号码的页面:
class OlxSpider(scrapy.Spider):
name = "olx"
rotate_user_agent = True
allowed_domains = ["olx.pt"]
start_urls = [
"https://olx.pt/imoveis/"
]
def parse(self, response):
script = """
function main(splash)
splash:go(splash.args.url)
splash:runjs('document.getElementById("contact_methods").getElementsByTagName("span")[1].click();')
splash:wait(0.5)
return splash:html()
end
"""
for href in response.css('.link.linkWithHash.detailsLink::attr(href)'):
url = response.urljoin(href.extract())
yield scrapy.Request(url, callback=self.parse_house_contents, meta={
'splash': {
'args': {'lua_source': script},
'endpoint': 'execute',
}
})
for next_page in response.css('.pager .br3.brc8::attr(href)'):
url = response.urljoin(next_page.extract())
yield scrapy.Request(url, self.parse)
def parse_house_contents(self, response):
import ipdb;ipdb.set_trace()
我怎样才能让它发挥作用?
答案 0 :(得分:3)
添加
splash:autoload("https://code.jquery.com/jquery-2.1.3.min.js")
到Lua脚本,它会工作。
function main(splash)
splash:go(splash.args.url)
splash:autoload("https://code.jquery.com/jquery-2.1.3.min.js")
splash:runjs('document.getElementById("contact_methods").getElementsByTagName("span")[1].click();')
splash:wait(0.5)
return splash:html()
end
.click()是JQuery函数https://api.jquery.com/click/
答案 1 :(得分:2)
您可以避免首先使用Splash
并提出相应的GET请求以自行获取电话号码。工作蜘蛛:
import json
import re
import scrapy
class OlxSpider(scrapy.Spider):
name = "olx"
rotate_user_agent = True
allowed_domains = ["olx.pt"]
start_urls = [
"https://olx.pt/imoveis/"
]
def parse(self, response):
for href in response.css('.link.linkWithHash.detailsLink::attr(href)'):
url = response.urljoin(href.extract())
yield scrapy.Request(url, callback=self.parse_house_contents)
for next_page in response.css('.pager .br3.brc8::attr(href)'):
url = response.urljoin(next_page.extract())
yield scrapy.Request(url, self.parse)
def parse_house_contents(self, response):
property_id = re.search(r"ID(\w+)\.", response.url).group(1)
phone_url = "https://olx.pt/ajax/misc/contact/phone/%s/" % property_id
yield scrapy.Request(phone_url, callback=self.parse_phone)
def parse_phone(self, response):
phone_number = json.loads(response.body)["value"]
print(phone_number)
如果要从这个“动态”网站中提取更多内容,请查看Splash是否足够,如果没有,请查看浏览器自动化和selenium
。