Method Requests - parameters associated with jsession (on an interface parameters as a request to return a data interface)

Foreword

Parameters associated with the interface and performance testing is the most important step, many requests are dynamic parameters of the interface, and the need to return the value taken out from an interface which generally becomes ineffective only once.
The most common case is the site login case, many visit the website does not only pass username and psw only two parameters, there are often other dynamic parameters.
Cookies sometimes need to take parameters such as JSESSIONID

Login parameters

Firstly, under the destination site [learn telecommunications network: https: //account.chsi.com.cn/passport/login] login interface to request parameters.
First enter the account number and password, click Login using fiddler packet capture tool to view request parameters, two parameters are the parameters automatically to the web page (no user input)

lt

LT-945609-OlQbFZ4LfFeW4gWBgJAJAbBVxwVyy7-cas

execution

f8947218-de8d-4062-88a9-99e761aff8b4_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

 

 

 

After the user exits, the above is repeated, then see if the request parameter capture, will find changed

 

 

 

lt

LT-946015-AtfP7ic5GSmqHffGpQbZYbv9shggDb-cas

execution

73284ef4-b155-41cf-8924-c2137733a22d_ZXlKaGJHY2lPaUpJVXpVeE1pSjkuTWl0V2NHVndaRFppVkRNd1ZqTldiRFUyTW1KSWJtUXJNbFZOYURJMGVIZHJZbFZ5U0ZORE1VOURWRzFRVTBaQlpUQXJNM1ZFUkVsS1VXdHFPUzlLT1cxSWN6Sk9ZVVpMTVRKbmEwUkNjVmM0UnpKcFdXWldjV1l5TXpoamFIQlFTalUwWlM5TmIwRm1kbkZEVTNoQmQyWlpjM0pFZWxsaU5UWmxlSEU0TUdOS2QxZFFOMmwwZW5SVlpuQmpabFF6ZDB4M1lucDZVRXhvWTB3NFpXb3dha1JHVDBsMlFXdFJiSEp5VlhwYWJEUktSRW8xZUdveEsyZDJNM0J0YlRaUVYwcFBXRU5wYVRWVFJqWnRjWEIzTVc5emRFOVJPWFJtVVdKQlFWTkNaWFl6UzBGSmRtTnFUamxSVkVoQ1Z6bFpORGMwVkhKSmVuSm5TbU5DWW1sa09XcHpXa1p3TW01dVMxbHRVbHBTUjNkU09FNVNjelpHVWtOb01DOXBVelU0VEdKQ00yWmFLMGhIY1dKV2RUWnliVFJqY1VReU1EVlFRa1kwT1c4MWNtWkxaRkpLYTFwcVRVdEhjVkJGWkhKdmEzUnBhbmRJZVRGaGIzZFliRXhTYlhKTk4wMXZWMHhuYlVoeFpISlFUekZrTkZWekwwcERVVWxvVjA1SGJqVlFhR2xyV0ZSSVdtMW1PSGRoVlhaaVNURjJPVWQxYVVkYU1IVkJVRXA0ZGs1RFpqUTBaWG8zVjAxNU5IaGtRMUJCYWxobkwwTlNhRU16WTFjdmVIYzNVbTFoVFc1QlJYWmpLM3BXYm14YWIxSm5LMWwxY0VaSGIxTnBOM3AwTDNoNWJ5OTJUM1pHV1VweE0wUkdORUZ5VDBwVE1XSk1hME0zZWxSRlEzbHNaRWR3VW1jMlVDczVNVkZsVW0xU1RYcEhSRU0wYzFWbmFWUkhLemRIU3pjd0t6TjVTM1pHTVhZNEsyUnNla1pZZVZOVVlqRnBNbFJGVjJrM1NsZG9OSEpSYTFObGFHTnBlbGhaT0dWa0szaHZaRmhOWWs1Q1ZsZHFLemwwTkVKak1VSkNVeTlGTm5OeFRYUjNTV3BvTTBoblkzQm9lVTFUTUZSc01VWnhTV2xxYVV4RWJXTnJUbGhSUkVKUlQxRjBiRE0xYlRRMVozSnpUR051UjJkVmFtRTJTR292U0U0M1prZHVVMmcyWW1wWWN6WTFNSFZzV0Roc2JqSkllRVJYYUhJcmVXSklNMGxoTmtRMkswdERZWFJIZFhkVmJGVkZZa1pyYTJkbllYVlJXREJ2UkZabGIzVjBjVmhaVm5kM05VcHpaRmt6V1ZGNE1YTndWMmxhYTBSc1lWWjJNVUpUZHl0aVEyeG5PV3B6Y1V0Q1VYRlBWVVpKUzNoT2RHeHVXRTFqTWtwWk1ERk9RbFUzWVZFeVVsWjZXbU5HUzNSaU1FUmpNVEJJUmtoSFpqSkZlVmxPYTJocFVWcFhXbFpuTWs0d1dVSlhkbXMzVlZaVlZrNVBTRFp4Vms5UmRpOUxSVXgyV0hWVk1UQllSbUZEYVVac1YxcGFTREZhYjBoUVEwOVlNVTQxU1hkVVoyODBOM2h1UlRCVWVEaFlTMmhYVlVRcmFubDJhV1ZGT1dSWVozQXZiamxYT1VGNE1VZFlTbEpYTm1SSmRIbG5WVkJGTTFrMlJHSjFlRWhXT1ZOUlZEQjFWWEpVUldGSlJWSnRjMVpZY1ZWclZ6Wm9hakZpZDFKV2NrOXJjVzl4VlhOdGNuUXpUamxMTVdGVGFEZFJVVkZxTTFoUmFFOTRhRFJMZEdWVE0zUkxVRXRJTURsR1JVOWtXbTV2T0dkd2FqTlRSMlZtUm01emMyRnpSRFZNWml0T1NYVnNPSEJRTm5kUlUxZG5WMk5XUTNCaVpqUkpTMUF3ZGxCYU1tY3djaTlhYUdRck0xbG5VRFZqZEdWNU5HOU5lRmxqVFVOU2VHa3dPRTlGTlN0SFFuSkNka3hES3pGNk0zWlFLekYyY0ZKWmRraDNNblV3V1d3NVJHSjJhWFJRZDFOWlFtSk5iSEp5VWpOSFlXWXphbHBNUldWc1MzUXlhMDFKUW1OaGN6bFRSVk0wV2psWFpIRlNjRFU1Vkc1aFRXWnBRblZWYzI4dlEwMVZNbTlZSzJFNVJucDRSbG8zTjNwUWVWSTVZa3RNTDJsRlIyNTFUazU1Y0VWWFJuZFpaR2g0YW5vcmRrUklOSGhDY2pSSFVIbFllbHBtU2xwVVFuUlZWMGh4Y2tsT05DdDFlR3hMZDJoTmJVTjNWV2hrVFU5U2QwVldaMDFrWWtodlIxQmtRMDhyTUdFd01YSlJWbXQ2YzJoTFRXRnVXVEJWV1dkSlYxcFFTMVpWUmtSeVkzZ3ZLM0Z1TjJNNE5tNHJWVlpFZGsxRFYwMU5ZMkZaVUZsbWRIQkljVXB3Ympjd055dGFUbmg1YlRoV1VUVktVRk5TVFZWMVJDOWlja1JSZFU5c2NVMXZiRFpPZERNekswMTFjQzlRYWxaVmRXdEVka1ZqT0VaNEt6WnpObTh5Y1RsVVpIbGtSMEYzUldsWE9EQkVSWGxZWkhvNU1tUXhhbkU1YTAwNWFrNHhNVmRYU0dORFVYQmhlVVZzTTA5SE9YWldjbmx3YWxWMU1uWTNTMnBYVWpsTFpGcDNLemsxUlcxUGREWXdaMWxQY1ZKeGJVZDZjVUZvU3pOeFFsRk1NVzF6TkhWc1pFVnVkbmx1VTJ0QlIyTm9ha0ZpVmtocmNHZGtPRkZ0VUdGbVptRmtSRmRuYldoUWQzaHhLMmRHVFdaa1IyNWxWa0Z5VlU1VE4xcGFZM0E0YzJrd1V6QllRamd2U0d0eWFXVm1PVWNyVlZsRE5YaHRZek5XYmtsWVZXeHNLM05MWmsxVGIwZGhlV1pJUkdVemVFOHhaMkpTWTJsRVpWcHlkamN3TVV0cWFqSmhWakJRYkdWUE1IZDBieXRJUW1OVmJXTk9VMEU1ZDI1dlExSnFlVlJ5UVhVMWFWUk9iWEJGWjJsdlRVSnhTbmhxVjFjd2FGbFRPSEJIUkhCV2NVZEVabkpSVm1KMWFrdFRaRVZUYkRnd1psVjVURWRyTVUxUFJtbHpZblEzT1hacmJFNTBiMk5GVWsxMFJFbFNORUkxWmxGdVEyazNRemhYYlVKalJEWXliM29yUWtsR2FVbEtUMnRWWWxocFRFNHlORkJGYm5wdmFVdEVTVTFVZUV0bFYzVnJWa05xTUZZMldreHdVRU5JVkRSUlZXMTVWSFZvTDNSU2NGQXhOVm9yZGxWbFNFdGlSRXhoZDJZMlJHOXFWa1ozUW1kU0t6Qm9aR3hKYzNCTWNHRktiRE5KUm1kQ2VrNHJTRGRYV21zM2FHcE9WbGRxV0RWWFkwOUdNRlJIZDJ0WGVtOXZUMDFQT1dWSlRucFhZVXh5YldKQmNqTlZjR1J5ZUhFd1RWUlhVRTVOTkdwSWNWbzBhbFpCT1dveVdqUjVabmxTTUhOemJWaG5VakJhYzBWdlQyNUJOMmM5UFEuRDdiMG1ZWW1XRE1PbDF6eEM1SkoxRzlPQVN4NHBOOTMwMHZYTVZpTU04LUJJZ01UeHZSVHlxTUlqVHp4Zl9qVDNrZU5Xa21Wd1NRVmZqYmlvUUlueUE=

 

Get Interface return data

We want to register, they must first get lt execution and these two parameters, then the question arises: are these two parameters come from?
Open the login page https://account.chsi.com.cn/passport/login direct refresh to see the return of html content

<input class="btn_login" name="submit" accesskey="l" value="登录" tabindex="4" type="submit" title="登录" />

<div class="account-oprate clearfix">
<a class="find-yhm" href="https://account.chsi.com.cn/account/password!rtvlgname">找回用户名</a>
<a class="find-mm" href="https://account.chsi.com.cn/account/password!retrive">找回密码</a>
<a href="https://account.chsi.com.cn/account/preregister.action?from=account-login" class="regist-btn">注册</a>
</div>
<input type="hidden" name="lt" value="LT-945609-OlQbFZ4LfFeW4gWBgJAJAbBVxwVyy7-cas" />
<input type="hidden" name="execution" value="f8947218-de8d-4062-88a9-99e761aff8b4_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" />
<input type="hidden" name="_eventId" value="submit" />

Next we can reptiles lxml etree, parsing and execution value lt value of these two values ​​from the html

import requests,urllib3,os
from bs4 import BeautifulSoup
urllib3.disable_warnings()
from lxml import etree

#初始化会话
s = requests.Session()

def get_execution_it():
    result = {}
    url = "https://account.chsi.com.cn/passport/login"

    # 登录get方法，不用传入cookie
    header = {
        "User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36"
    }
　　
    s.headers.update(header)
    r = s.get(url,verify=False)
    # print(r.content.decode("utf-8"))
    html = etree.HTML(r.content.decode("utf-8"))
    # print(html)
    # tag = html.find(class_="cr_top_my")
    # print(len(tag))

    try:

        result["lt"] = html.xpath('//input[@name="lt"]')[0].get("value")
        result["execution"] = html.xpath('//input[@name="execution"]')[0].get("value")
        print(result)

    except:
        print("获取1t/execution失败")
    return result


if __name__ == '__main__':
    result = get_execution_it()

JSESSIONID

Log in fact there will be a very important parameter cookies, JSESSIONID = A7E6B911CD6E59123F657784E5BDD7B3, this JSESSIONID is dynamic, each re-open the page will change.
This parameter is also the first visit to the login page, the server will automatically return over, use your browser to access incognito mode for the first time will be able to crawl.

 

 

Cookies associated parameters to achieve is very simple, direct use requests.session () to send a get request can be automatically saved, so the last step get_it_execution () actually synchronized cookies parameters.

 

 

 

Reference Code:

import requests,urllib3,os
from bs4 import BeautifulSoup
urllib3.disable_warnings()
from lxml import etree

#初始化会话
s = requests.Session()

def get_execution_it():
    result = {}
    url = "https://account.chsi.com.cn/passport/login"

    # 登录get方法，不用传入cookie
    header = {
        "User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36"
    }

    s.headers.update(header)
    r = s.get(url,verify=False)
    # print(r.content.decode("utf-8"))
    html = etree.HTML(r.content.decode("utf-8"))
    # print(html)
    # tag = html.find(class_="cr_top_my")
    # print(len(tag))

    try:

        result["lt"] = html.xpath('//input[@name="lt"]')[0].get("value")
        result["execution"] = html.xpath('//input[@name="execution"]')[0].get("value")
        print(result)

    except:
        print("获取1t/execution失败")
    return result

def login(result,user=None,passwd=None):
    loginurl = "https://account.chsi.com.cn/passport/login"
    headers = {
        "Referer":loginurl,
        "User-Agent":"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36",
        "Content-Type":"application/x-www-form-urlencoded",
        "Upgrade-Insecure-Requests":"1",
        "Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3",
        "Origin":"https://account.chsi.com.cn",
        "Content-Length":"3934",
        "Cache-Control":"max-age=0"
    }
    body = {
        "username":user,
        "password":passwd,
        "submit":"登录",
        "lt":result["lt"],
        "execution":result["execution"],
        "_eventId":"submit"
    }
    s.headers.update(headers)
    r1 = s.post(url=loginurl,headers=headers,data=body,verify=False)
    print(r1.text)


if __name__ == '__main__':
    result = get_execution_it()
    # Login (result, user = "letter of their own learning network account", passwd = "password for their own learning telecommunications network")