猿人学第十二题：入门级js

题目链接：https://match.yuanrenxue.cn/match/12

常规操作，按下F12打开开发者工具，刷新题目，点击翻页按钮，界面如⬇️

先看请求参数，有一个加密的m值，接着看看响应⬇️

 

可以看到data没有任何加密，接着点击Preview旁边的旁边的Initiator，点req的js进去⬇️

 

 

可以看到m就是btoa将yuanrenxue和page页码拼接起来后的base64字符串，这道题是很简单的，代码如⬇️

import json
import time

import execjs
import requests


def get_question_12_result():
    url = "https://match.yuanrenxue.cn/api/question/12"
    headers = {
            "accept": "application/json, text/javascript, */*; q=0.01",
            # "accept-encoding": "gzip, deflate, br",
            "accept-language": "zh-CN,zh;q=0.9",
            "cookie": "Hm_lvt_f80b2b389f44bbfb3bfe1704817d44e0=1773998064; sessionid=1p34qxd0wn3sc2nlip8vx6izgffrh0m9; m=a37ca75833ca865d11a7451f18043a14|1774000280348; Hm_lpvt_f80b2b389f44bbfb3bfe1704817d44e0=1774247614; HMACCOUNT=5CCC201FDBE7CB2F",
            "referer": "https://match.yuanrenxue.cn/match/12",
            "sec-ch-ua": "\"Chromium\";v=\"94\", \"Google Chrome\";v=\"94\", \";Not A Brand\";v=\"99\"",
            "sec-ch-ua-mobile": "?0",
            "sec-ch-ua-platform": "\"Windows\"",
            "sec-fetch-dest": "empty",
            "sec-fetch-mode": "cors",
            "sec-fetch-site": "same-origin",
            "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36",
            "x-requested-with": "XMLHttpRequest"
        }
    sum_data = 0
    s = requests.Session()
    s.headers.clear()
    s.headers.update(headers)

    for page in range(1, 6):
        # execjs自动环境检测
        m = execjs.eval(f'btoa("yuanrenxue" + {page})')
        print(m)
        if page == 5:
            headers['user-agent'] = 'yuanrenxue'
            s.headers.update(headers)
        params = {
            "page": page,
            "pageSize": "10",
            "kw": "",
            "m": m
        }
        try:
            r = s.get(url=url, params=params, verify=False)
            if r.status_code == 200:
                data = r.json()['data']
                sum_data += sum(data)
                print(f"翻第{str(page)}页，累计求和:{sum_data}")
            else:
                print(f'error:{r.status_code}-----{r.text}')
        except Exception as e:
            raise ValueError(e)


if __name__ == '__main__':
    get_question_12_result()