Python爬蟲：抓取手機APP的資料

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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

    方法詳細可以參考這篇博文：http://my.oschina.net/jhao104/blog/605963

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

    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

登入代碼：

#python學習交流群：125240963import 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

 

登入成功 會返回一串帳號資訊的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參數

    做法就和類比登入網站一樣。詳見：http://my.oschina.net/jhao104/blog/547311

    下見最終代碼，有首頁擷取和下拉載入更新。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 urllib2from cookielib import CookieJarimport 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 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‘‘‘ ---擷取話題--- ‘‘‘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：

python學習交流群：125240963

轉載請註明來源：http://my.oschina.net/jhao104/blog/606922

Python爬蟲：抓取手機APP的資料