用python爬取app照片

首先下載一個斗魚（不下載也可以，url都在這了對吧）

 　　通過抓包，抓取到一個json的數據包，得到下面的地址

 

　　觀察測試可知，通過修改offset值就是相當於app的翻頁

　　訪問這個url，返回得到的是一個大字典，字典里面兩個索引，一個error，一個data。而data又是一個長度為20的數組，每個數組又是一個字典。每個字典中又有一個索引，vertical_src。

　　我們的目標就是它了！

import urllib.parse
import urllib
import json
import urllib.request
data_info={}
data_info['type']='AUTO'
data_info['doctype']='json'
data_info['xmlVersion']='1.6'
data_info['ue']='UTF-8'
data_info['typoResult']='true'
head_info={}
head_info['User-Agent']='DYZB/2.271 (iphone; iOS 9.3.2; Scale/3.00)'
url='http://capi.douyucdn.cn/api/v1/getVerticalRoom?aid=ios&client_sys=ios&limit=20&offset=20'
data_info=urllib.parse.urlencode(data_info).encode('utf-8')
print(data_info)
requ=urllib.request.Request(url,data_info)
requ.add_header('Referer','http://capi.douyucdn.cn')
requ.add_header('User-Agent','DYZB/2.271 (iphone; iOS 9.3.2; Scale/3.00)')
response=urllib.request.urlopen(requ)
print(response)
html=response.read().decode('utf-8')

這短短20多行代碼就能返回得到json數據了。然后再通過對這json代碼的切片，分離得到每個主播照片的url地址。

然后得到這一頁的照片

import json
import urllib.request
data_info={}
data_info['type']='AUTO'
data_info['doctype']='json'
data_info['xmlVersion']='1.6'
data_info['ue']='UTF-8'
data_info['typoResult']='true'

11 url+str(i)='http://capi.douyucdn.cn/api/v1/getVerticalRoom?aid=ios&client_sys=ios&limit=20&offset='+str(x)
data_info=urllib.parse.urlencode(data_info).encode('utf-8')
print(data_info)
requ=urllib.request.Request(url,data_info)
requ.add_header('Referer','http://capi.douyucdn.cn')
requ.add_header('User-Agent','DYZB/2.271 (iphone; iOS 9.3.2; Scale/3.00)')
response=urllib.request.urlopen(requ)
print(response)
html=response.read().decode('utf-8')
'''
 print(type(dictionary))
print(type(dictionary[data]))
'''
dictionary=json.loads(html)
data_arr=dictionary["data"]
for i in range(0,19):
    name=data_arr[i]["nickname"]
    img_url=data_arr[i]["vertical_src"]
29     print(type(img_url))
    respon_tem=urllib.request.urlopen(img_url)
31     anchor_img=respon_tem.read()
    with open('../photos/'+name+'.jpg','wb') as f:
        f.write(anchor_img)

然后修改一下，讓它有了翻頁的功能

import urllib.parse
import urllib
import json
import urllib.request
data_info={}
data_info['type']='AUTO'
data_info['doctype']='json'
data_info['xmlVersion']='1.6'
data_info['ue']='UTF-8'
data_info['typoResult']='true'
data_info=urllib.parse.urlencode(data_info).encode('utf-8')

for x in range(0,195):
    url='http://capi.douyucdn.cn/api/v1/getVerticalRoom?aid=ios&client_sys=ios&limit=20&offset='+str(x)
    print(data_info)
    requ=urllib.request.Request(url,data_info)
    requ.add_header('Referer','http://capi.douyucdn.cn')
    requ.add_header('User-Agent','DYZB/2.271 (iphone; iOS 9.3.2; Scale/3.00)')
    response=urllib.request.urlopen(requ)
    print(response)
    html=response.read().decode('utf-8')
    dictionary=json.loads(html)
    data_arr=dictionary["data"]
    for i in range(0,19):
        name=data_arr[i]["nickname"]
        img_url=data_arr[i]["vertical_src"]
        print(type(img_url))
        respon_tem=urllib.request.urlopen(img_url)
        anchor_img=respon_tem.read()
        with open('../photos/'+name+'.jpg','wb') as f:
            f.write(anchor_img)

然后就等着吧~~

最好設置一下時間，每隔多久爬一次，或者每隔多久更換一次ip。就行了