Python爬蟲抓取手機APP的傳輸數據

2019-11-25 16:58:10

字體：大中小

來源：轉載

供稿：網友

大多數APP里面返回的是json格式數據，或者一堆加密過的數據。這里以超級課程表APP為例，抓取超級課程表里用戶發的話題。

1、抓取APP數據包

方法詳細可以參考這篇博文：Fiddler如何抓取手機APP數據包

得到超級課程表登錄的地址：http://120.55.151.61/V2/StudentSkip/loginCheckV4.action

表單：

表單中包括了用戶名和密碼，當然都是加密過了的，還有一個設備信息，直接post過去就是。

另外必須加header,一開始我沒有加header得到的是登錄錯誤，所以要帶上header信息。

2、登錄

登錄代碼：

import urllib2from cookielib import CookieJarloginUrl = 'http://120.55.151.61/V2/StudentSkip/loginCheckV4.action'headers = {'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8','User-Agent': 'Dalvik/1.6.0 (Linux; U; Android 4.1.1; M040 Build/JRO03H)','Host': '120.55.151.61','Connection': 'Keep-Alive','Accept-Encoding': 'gzip','Content-Length': '207',}loginData = 'phoneBrand=Meizu&platform=1&deviceCode=868033014919494&account=FCF030E1F2F6341C1C93BE5BBC422A3D&phoneVersion=16&password=A55B48BB75C79200379D82A18C5F47D6&channel=MXMarket&phoneModel=M040&versionNumber=7.2.1&'cookieJar = CookieJar()opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJar))req = urllib2.Request(loginUrl, loginData, headers)loginResult = opener.open(req).read()print loginResult

登錄成功會返回一串賬號信息的json數據

和抓包時返回數據一樣，證明登錄成功

3、抓取數據

用同樣方法得到話題的url和post參數

做法就和模擬登錄網站一樣。詳見：Python爬蟲模擬登錄帶驗證碼網站

下見最終代碼，有主頁獲取和下拉加載更新。可以無限加載話題內容。

#!/usr/local/bin/python2.7# -*- coding: utf8 -*-"""超級課程表話題抓取"""import urllib2from cookielib import CookieJarimport json''' 讀Json數據 '''def fetch_data(json_data):data = json_data['data']timestampLong = data['timestampLong']messageBO = data['messageBOs']topicList = []for each in messageBO:topicDict = {}if each.get('content', False):topicDict['content'] = each['content']topicDict['schoolName'] = each['schoolName']topicDict['messageId'] = each['messageId']topicDict['gender'] = each['studentBO']['gender']topicDict['time'] = each['issueTime']print each['schoolName'],each['content']topicList.append(topicDict)return timestampLong, topicList''' 加載更多 '''def load(timestamp, headers, url):headers['Content-Length'] = '159'loadData = 'timestamp=%s&phoneBrand=Meizu&platform=1&genderType=-1&topicId=19&phoneVersion=16&selectType=3&channel=MXMarket&phoneModel=M040&versionNumber=7.2.1&' % timestampreq = urllib2.Request(url, loadData, headers)loadResult = opener.open(req).read()loginStatus = json.loads(loadResult).get('status', False)if loginStatus == 1:print 'load successful!'timestamp, topicList = fetch_data(json.loads(loadResult))load(timestamp, headers, url)else:print 'load fail'print loadResultreturn FalseloginUrl = 'http://120.55.151.61/V2/StudentSkip/loginCheckV4.action'topicUrl = 'http://120.55.151.61/V2/Treehole/Message/getMessageByTopicIdV3.action'headers = {'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8','User-Agent': 'Dalvik/1.6.0 (Linux; U; Android 4.1.1; M040 Build/JRO03H)','Host': '120.55.151.61','Connection': 'Keep-Alive','Accept-Encoding': 'gzip','Content-Length': '207',}''' ---登錄部分--- '''loginData = 'phoneBrand=Meizu&platform=1&deviceCode=868033014919494&account=FCF030E1F2F6341C1C93BE5BBC422A3D&phoneVersion=16&password=A55B48BB75C79200379D82A18C5F47D6&channel=MXMarket&phoneModel=M040&versionNumber=7.2.1&'cookieJar = CookieJar()opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJar))req = urllib2.Request(loginUrl, loginData, headers)loginResult = opener.open(req).read()loginStatus = json.loads(loginResult).get('data', False)if loginResult:print 'login successful!'else:print 'login fail'print loginResult''' ---獲取話題--- '''topicData = 'timestamp=0&phoneBrand=Meizu&platform=1&genderType=-1&topicId=19&phoneVersion=16&selectType=3&channel=MXMarket&phoneModel=M040&versionNumber=7.2.1&'headers['Content-Length'] = '147'topicRequest = urllib2.Request(topicUrl, topicData, headers)topicHtml = opener.open(topicRequest).read()topicJson = json.loads(topicHtml)topicStatus = topicJson.get('status', False)print topicJsonif topicStatus == 1:print 'fetch topic success!'timestamp, topicList = fetch_data(topicJson)load(timestamp, headers, topicUrl)

結果：