摘要

大多數APP裡面返回的是json格式資料，或者一堆加密過的資料 。這裡以超級課程表APP為例，抓取超級課程表裡使用者發的話題。

1

抓取APP資料包

表單：

表單中包括了使用者名稱和密碼，當然都是加密過了的，還有一個裝置資訊，直接post過去就是。

另外必須加header,一開始我沒有加header得到的是登入錯誤，所以要帶上header資訊。

2

登入

登入程式碼：

import urllib2 from cookielib import CookieJar loginUrl = '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

登入成功 會返回一串賬號資訊的json資料

和抓包時返回資料一樣，證明登入成功

3

抓取資料

用同樣方法得到話題的url和post引數

做法就和模擬登入網站一樣。詳見：/file/2019/11/17/20191117173310_42474.jpg 下見最終程式碼，有主頁獲取和下拉載入更新。可以無限載入話題內容。

#!/usr/local/bin/python2.7 # -*- coding: utf8 -*- """  超級課程表話題抓取 """ import urllib2 from cookielib import CookieJar import json ''' 讀Json資料 ''' 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 ''' 載入更多 ''' 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&' % timestamp  req = 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 loadResult  return False loginUrl = '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',  } ''' ---登入部分--- ''' 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 topicJson if topicStatus == 1:  print 'fetch topic success!'  timestamp, topicList = fetch_data(topicJson)  load(timestamp, headers, topicUrl)

結果：