我使用scrapy + splash在网站上进行连接(感谢this thread)。
我知道我已登录,因为我可以在您登录后显示一些可用的元素。但是当我尝试使用另一个 `2` `3` Guanzhou Shenzhen Hongkong
1 0.65 0.8 0.6 0.70 NA
2 0.80 NA NA 0.60 NA
3 0.70 NA NA 0.60 0.7
4 0.70 NA NA 0.65 NA
到达另一个页面时,该网站会询问再次登录。
因此,似乎scrapy(或splash)不会使会话保持活动状态。是否有东西可以保持记录,并使会话保持活动状态?
谢谢,
答案 0 :(得分:1)
Splash从一个干净的状态开始每个渲染,所以如果你想保持会话,你需要先初始化cookie,并让Scrapy知道在渲染过程中设置的cookie。请参阅scrapy-splash README中的Session Handling部分。一个完整的示例可能如下所示(来自README的复制粘贴):
import scrapy
from scrapy_splash import SplashRequest
script = """
function main(splash)
splash:init_cookies(splash.args.cookies)
assert(splash:go{
splash.args.url,
headers=splash.args.headers,
http_method=splash.args.http_method,
body=splash.args.body,
})
assert(splash:wait(0.5))
local entries = splash:history()
local last_response = entries[#entries].response
return {
url = splash:url(),
headers = last_response.headers,
http_status = last_response.status,
cookies = splash:get_cookies(),
html = splash:html(),
}
end
"""
class MySpider(scrapy.Spider):
# ...
yield SplashRequest(url, self.parse_result,
endpoint='execute',
cache_args=['lua_source'],
args={'lua_source': script},
)
def parse_result(self, response):
# here response.body contains result HTML;
# response.headers are filled with headers from last
# web page loaded to Splash;
# cookies from all responses and from JavaScript are collected
# and put into Set-Cookie response header, so that Scrapy
# can remember them.
请注意,会话当前需要使用/ execute或/ run端点,其他端点没有帮助程序。