使用cookies进行scrapy身份验证登录 [英] scrapy authentication login with cookies

问题描述

我是scrapy的新手并决定尝试一下，因为在线评论很好.我正在尝试使用scrapy登录网站.我通过使用 selenium 收集所需的 cookie 并将它们添加到 mechanize 中，成功地使用 selenium 和 mechanize 的组合登录.现在我正在尝试用scrapy和selenium做类似的事情，但似乎无法得到任何工作.我什至无法判断是否有任何工作.谁能帮帮我吗.以下是我开始的内容.我什至可能不需要用scrapy传输cookie，但我不知道这东西是否真的登录过.谢谢

i am new to scrapy and decided to try it out because of good online reviews. I am trying to login to a website with scrapy. I have successfully logged in with a combination of selenium and mechanize by collecting the needed cookies with selenium and adding them to mechanize. Now I am trying to do something similar with scrapy and selenium but cant seem to get anything to work. I cant really even tell if anything is working or not. Can anyone please help me. Below is what Ive started on. I may not even need to transfer the cookies with scrapy but i cant tell if the thing ever actually logs in or not. Thanks

from scrapy.spider import BaseSpider
from scrapy.http import Response,FormRequest,Request
from scrapy.selector import HtmlXPathSelector
from selenium import webdriver

class MySpider(BaseSpider):
    name = 'MySpider'
    start_urls = ['http://my_domain.com/']

    def get_cookies(self):
        driver = webdriver.Firefox()
        driver.implicitly_wait(30)
        base_url = "http://www.my_domain.com/"
        driver.get(base_url)
        driver.find_element_by_name("USER").clear()
        driver.find_element_by_name("USER").send_keys("my_username")
        driver.find_element_by_name("PASSWORD").clear()
        driver.find_element_by_name("PASSWORD").send_keys("my_password")
        driver.find_element_by_name("submit").click()
        cookies = driver.get_cookies()
        driver.close()
        return cookies

    def parse(self, response,my_cookies=get_cookies):
        return Request(url="http://my_domain.com/",
            cookies=my_cookies,
            callback=self.login)

    def login(self,response):
        return [FormRequest.from_response(response,
            formname='login_form',
            formdata={'USER': 'my_username', 'PASSWORD': 'my_password'},
            callback=self.after_login)]

    def after_login(self, response):
        hxs = HtmlXPathSelector(response)
        print hxs.select('/html/head/title').extract()

推荐答案

你的问题更多是调试问题，所以我的回答只会对你的问题做一些注释，而不是确切的答案.

Your question is more of debug issue, so my answer will have just some notes on your question, not the exact answer.

def parse(self, response,my_cookies=get_cookies):
    return Request(url="http://my_domain.com/",
        cookies=my_cookies,
        callback=self.login)

my_cookies=get_cookies - 您在此处分配一个函数，而不是它返回的结果.我认为您根本不需要在这里传递任何函数作为参数.应该是:

my_cookies=get_cookies - you are assigning a function here, not the result it returns. I think you don't need to pass any function here as parameter at all. It should be:

def parse(self, response):
    return Request(url="http://my_domain.com/",
        cookies=self.get_cookies(),
        callback=self.login)

cookies Request 的参数应该是一个 dict - 请验证它确实是一个 dict.

cookies argument for Request should be a dict - please verify it is indeed a dict.

我什至无法判断是否有任何工作.

I cant really even tell if anything is working or not.

在回调中放置一些打印以跟踪执行.

Put some prints in the callbacks to follow the execution.

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