Python爬蟲抓取手機APP的傳輸數(shù)據(jù)

更新時間：2016年01月22日 14:41:33 作者：j_hao104

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

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

1、抓取APP數(shù)據(jù)包

方法詳細(xì)可以參考這篇博文：Fiddler如何抓取手機APP數(shù)據(jù)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(dāng)然都是加密過了的，還有一個設(shè)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 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

登錄成功會返回一串賬號信息的json數(shù)據(jù)

和抓包時返回數(shù)據(jù)一樣，證明登錄成功

3、抓取數(shù)據(jù)

用同樣方法得到話題的url和post參數(shù)

做法就和模擬登錄網(wǎng)站一樣。詳見：Python爬蟲模擬登錄帶驗證碼網(wǎng)站

下見最終代碼，有主頁獲取和下拉加載更新?？梢詿o限加載話題內(nèi)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數(shù)據(jù) '''
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&' % 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 topicJson
if topicStatus == 1:
print 'fetch topic success!'
timestamp, topicList = fetch_data(topicJson)
load(timestamp, headers, topicUrl)

結(jié)果：