多个 POST 请求，第二个请求收到 404 错误代码

Question

我是python的新手，并且遇到了同样的问题，该问题在请求GitHub上作为问题提出。我正在尝试对一个网站进行身份验证，该网站在初始登录后将您重定向到安全问题。初始登录和后续页面都使用相同的"操作 URL"，在第二个帖子请求中，我收到了 404，这是我的代码，任何帮助将不胜感激，在 GitHub 上提出问题后，他们说这是一个在这里问的问题，因为它不是在他们这边。(尽管他们在 GitHub 上对此有问题(：

from bs4 import BeautifulSoup as bs
import requests
import time
sources = ["https://www.dandh.com/v4/view?pageReq=dhMainNS"]
req = requests.Session()

def login():
authentication_url = "https://www.dandh.com/v4/dh"
header = {"user-agent": "Mozilla/5.0 (Windows NT 10.0; rv:60.0)      Gecko/20100101 Firefox/60.0"}
payload = {"Login": "12345",
"PW": "12345",
"Request": "Login"}
payload2 = {"securityAnswer": "12345",
"Request": "postForm"}
req.post(authentication_url, data=payload, headers=header)
time.sleep(3)
req.post(authentication_url, data=payload2, headers=header)
time.sleep(3)

def print_object(sources):
for url in sources:
soup_object = bs(req.get(url).text, "html.parser")
print(soup_object.get_text())

def main():
login()
print_object(sources)
main()

Answer 1

第

1 部分

在浏览网站后，问题的不好部分取决于payload2您只需向其添加另一个项目，即："formName":"loginChallengeValidation"所以总体payload2应该看起来像这样：

payload2 = {"formName":"loginChallengeValidation","securityAnswer": your_security_answer,
"Request": "postForm"}

这将阻止您获取状态代码404。希望这有帮助。

<小时 />

第 2 部分

即使这是您问题中的问题，我怀疑这是否是您真正想要的(因为第 1 部分中的代码会将您重定向到另一个验证表单(。 为了访问网站本身，您必须添加以下行：

header2 = {"user-agent": "Mozilla/5.0 (Windows NT 10.0; rv:60.0)      Gecko/20100101 Firefox/60.0", "Referer":"https://www.dandh.com/v4/view?pageReq=LoginChallengeValidation"}

和

req.post("https://www.dandh.com/v4/view?pageReq=LoginChallengeValidation", headers=header)

所以你的最终代码应该看起来像这样：

from bs4 import BeautifulSoup as bs
import requests
import time
sources = ["https://www.dandh.com/v4/view?pageReq=dhMainNS"]
req = requests.Session()

def login():
authentication_url = "https://www.dandh.com/v4/dh"
header = {"user-agent": "Mozilla/5.0 (Windows NT 10.0; rv:60.0)      Gecko/20100101 Firefox/60.0"}
header2 = {"user-agent": "Mozilla/5.0 (Windows NT 10.0; rv:60.0)      Gecko/20100101 Firefox/60.0", "Referer":"https://www.dandh.com/v4/view?pageReq=LoginChallengeValidation"}
payload = {"Login": your_username,
"PW": your_pasword,
"Request": "Login"}
payload2 = {"formName":"loginChallengeValidation","securityAnswer": your_security_answer,
"Request": "postForm", "btContinue": ""}
req.post(authentication_url, data=payload, headers=header)
req.post("https://www.dandh.com/v4/view?pageReq=LoginChallengeValidation", headers=header)

time.sleep(3)
req.post(authentication_url, data=payload2, headers=header2)

time.sleep(3)

def print_object(sources):
for url in sources:
soup_object = bs(req.get(url).text, "html.parser")
print(soup_object.get_text())

def main():
login()
print_object(sources)
main()

(PS：您应该将your_username，your_password和your_security_answer替换为您的凭据( 另外，我想指出的是，我认为time.sleep(3)在代码中没有用。

真的希望这有帮助。