今日头条python_GitHub - a57571735/headlines_today: 基于Python的爬取今日头条文章及视频...

分析所抓到的文章列表数据包：大致分为两类，一类是有视频的文章，一类则是没有视频的文章。

有视频的文章json内容里均有video_id这个key，如下图所示：

没有视频的文章：json文件内容均包含title、 abstract、 article_url等信息，具体内容如下.

{

"read_count":7089,

"media_name":"数码日记",

"ban_comment":0,

"abstract":"一般情况下，购买手机后我们都会买SIM卡，这是无可厚非的事情。但也有些网友买手机仅仅是作为备用机，用于日常上网使用，而在没有SIM卡的情况下，手机要想联网，只能通过连接Wi-Fi的方式实现。",

"image_list":[

{

"url":"http://p1.pstatp.com/list/ef6000f83af6113a252",

"width":698,

"url_list":[

{

"url":"http://p1.pstatp.com/list/ef6000f83af6113a252"

{

"url":"http://p4.pstatp.com/list/ef6000f83af6113a252"

{

"url":"http://p.pstatp.com/list/ef6000f83af6113a252"

}

"uri":"list/ef6000f83af6113a252",

"height":392

{

"url":"http://p3.pstatp.com/list/ef6000f83f79a941883",

"width":981,

"url_list":[

{

"url":"http://p3.pstatp.com/list/ef6000f83f79a941883"

{

"url":"http://p6.pstatp.com/list/ef6000f83f79a941883"

{

"url":"http://p.pstatp.com/list/ef6000f83f79a941883"

}

"uri":"list/ef6000f83f79a941883",

"height":551

{

"url":"http://p3.pstatp.com/list/ef6000f8405551c32f2",

"width":943,

"url_list":[

{

"url":"http://p3.pstatp.com/list/ef6000f8405551c32f2"

{

"url":"http://p6.pstatp.com/list/ef6000f8405551c32f2"

{

"url":"http://p.pstatp.com/list/ef6000f8405551c32f2"

}

"uri":"list/ef6000f8405551c32f2",

"height":530

}

"has_video":false,

"article_type":0,

"tag":"digital",

"has_m3u8_video":0,

"keywords":"MIUI,SIM卡,Wi-Fi",

"user_verified":1,

"aggr_type":1,

"cell_type":0,

"article_sub_type":0,

"bury_count":0,

"title":"不插SIM卡，不用Wi-Fi，小米手机也能上网",

"ignore_web_transform":1,

"source_icon_style":1,

"tip":0,

"hot":0,

"share_url":"http://toutiao.com/a6351618096909779201/?iid=6181230843&app=news_article",

"has_mp4_video":0,

"source":"数码日记",

"comment_count":22,

"article_url":"http://toutiao.com/group/6351618096909779201/",

"filter_words":[

{

"id":"8:0",

"name":"重复、旧闻",

"is_selected":false

{

"id":"9:1",

"name":"内容质量差",

"is_selected":false

{

"id":"5:32370023",

"name":"来源:数码日记",

"is_selected":false

{

"id":"2:306461588",

"name":"路由器",

"is_selected":false

{

"id":"6:47522",

"name":"小米手机",

"is_selected":false

}

"publish_time":1478851309,

"action_list":[

{

"action":1,

"extra":{

"desc":""

{

"action":3,

"extra":{

"desc":""

{

"action":7,

"extra":{

"desc":""

{

"action":9,

"extra":{

"desc":""

}

"gallary_image_count":4,

"cell_layout_style":1,

"tag_id":6351618096909779000,

"video_style":0,

"verified_content":"头条问答数码专家，安卓领域老兵",

"display_url":"http://toutiao.com/group/6351618096909779201/",

"large_image_list":[

"item_id":6351618007961175000,

"repin_count":117,

"cell_flag":11,

"user_info":{

"user_id":3378232303,

"name":"数码日记",

"verified_content":"头条问答数码专家，安卓领域老兵",

"avatar_url":"http://p3.pstatp.com/thumb/1209/1834968385",

"follow":false,

"user_verified":true,

"description":""

"source_open_url":"sslocal://media_account?media_id=3392972202",

"level":0,

"digg_count":0,

"behot_time":1478855948,

"cursor":1478855948999,

"url":"http://toutiao.com/group/6351618096909779201/",

"preload_web":1,

"user_repin":0,

"has_image":true,

"item_version":0,

"media_info":{

"user_id":3378232303,

"verified_content":"",

"avatar_url":"http://p2.pstatp.com/large/1209/1834968385",

"media_id":3392972202,

"name":"数码日记",

"follow":false,

"recommend_reason":"",

"is_star_user":false,

"user_verified":true

"group_id":6351618096909779000,

"middle_image":{

"url":"http://p1.pstatp.com/list/ef6000f83af6113a252",

"width":698,

"url_list":[

{

"url":"http://p1.pstatp.com/list/ef6000f83af6113a252"

{

"url":"http://p4.pstatp.com/list/ef6000f83af6113a252"

{

"url":"http://p.pstatp.com/list/ef6000f83af6113a252"

}

"uri":"list/ef6000f83af6113a252",

"height":392

}

有视频的文章：json文件内容均包含title、 abstract、 article_url等信息，具体内容如下。我们可访问article_url,经过多次采样暂得出今日头条的视频均为内连接。

{

"read_count":146886,

"video_id":"5419c21565a643c7b84ca101ec202087",

"media_name":"快娱乐",

"ban_comment":0,

"abstract":"谢谢观看，欢迎订阅",

"video_detail_info":{

"show_pgc_subscribe":1,

"video_preloading_flag":1,

"group_flags":32832,

"direct_play":1,

"detail_video_large_image":{

"url":"http://p1.pstatp.com/video1609/f8a0006db230575a16a",

"width":580,

"url_list":[

{

"url":"http://p1.pstatp.com/video1609/f8a0006db230575a16a"

{

"url":"http://p4.pstatp.com/video1609/f8a0006db230575a16a"

{

"url":"http://p.pstatp.com/video1609/f8a0006db230575a16a"

}

"uri":"video1609/f8a0006db230575a16a",

"height":326

"video_id":"5419c21565a643c7b84ca101ec202087",

"video_watch_count":131308,

"video_type":0,

"video_watching_count":0

"image_list":[

"has_video":true,

"article_type":0,

"tag":"news_military",

"has_m3u8_video":0,

"video_duration":149,

"user_verified":0,

"aggr_type":1,

"cell_type":0,

"article_sub_type":0,

"group_flags":32832,

"bury_count":70,

"title":"教官训练女兵，反被女兵打",

"ignore_web_transform":1,

"source_icon_style":4,

"tip":0,

"hot":0,

"share_url":"http://toutiao.com/a6349548387310305537/?iid=6181230843&app=news_article",

"has_mp4_video":0,

"source":"快娱乐",

"comment_count":64,

"article_url":"http://toutiao.com/group/6349548387310305537/",

"filter_words":[

{

"id":"8:0",

"name":"重复、旧闻",

"is_selected":false

{

"id":"9:1",

"name":"内容质量差",

"is_selected":false

{

"id":"5:62489742",

"name":"来源:快娱乐",

"is_selected":false

{

"id":"1:1648",

"name":"军事",

"is_selected":false

{

"id":"6:17453",

"name":"女兵",

"is_selected":false

}

"video_play_info":"{"status":10,"message":"success","video_duration":149.6,"video_list":{"video_1":{"definition":"360p","vtype":"mp4","vwidth":640,"vheight":282,"bitrate":401498,"size":8828747,"main_url":"aHR0cDovL3Y2LnBzdGF0cC5jb20vdmlkZW8vYy9lY2JjZjhlNGVkMjc0ZTUwOWY1MWU3MjI2MzA0Y2NjMi8/RXhwaXJlcz0xNDc4ODU5NzY4JkFXU0FjY2Vzc0tleUlkPXFoMGg5VGRjRU1ybTFWbFIyYWQlMkYmU2lnbmF0dXJlPXZ2eWdnTDRkQTRrVGdJSHNHMEdENnN3NnUlMkJFJTNE","backup_url_1":"aHR0cDovL3Y0LnBzdGF0cC5jb20vMDZlZWY4NzU1NDVmMDUyMzk2YTk4NGQ1N2JiOTllODUvNTgyNThkZTgvdmlkZW8vYy9lY2JjZjhlNGVkMjc0ZTUwOWY1MWU3MjI2MzA0Y2NjMi8=","preload_size":327680,"play_load_min_step":2,"play_load_max_step":10},"video_2":{"definition":"480p","vtype":"mp4","vwidth":854,"vheight":376,"bitrate":609772,"size":12723821,"main_url":"aHR0cDovL3Y3LnBzdGF0cC5jb20vNzU5M2E4MzRkYmQ3YWRlYTFjZWZlYzNiMjczYTgzY2YvNTgyNThkZTgvdmlkZW8vYy8yOTdiYmZkMzlhZTU0NDk1YjFmOGJiODJmMmVjZDIyYi8=","backup_url_1":"aHR0cDovL3Y2LnBzdGF0cC5jb20vdmlkZW8vYy8yOTdiYmZkMzlhZTU0NDk1YjFmOGJiODJmMmVjZDIyYi8/RXhwaXJlcz0xNDc4ODU5NzY4JkFXU0FjY2Vzc0tleUlkPXFoMGg5VGRjRU1ybTFWbFIyYWQlMkYmU2lnbmF0dXJlPWx4TWZpYmZvSkIyUUladUxkMjJYQktKQ2dWRSUzRA==","preload_size":327680,"play_load_min_step":2,"play_load_max_step":10},"video_3":{"definition":"720p","vtype":"mp4","vwidth":952,"vheight":420,"bitrate":795675,"size":16199930,"main_url":"aHR0cDovL3Y3LnBzdGF0cC5jb20vOGU3MmU3Yzk5YjAwMjg5ZjM0ODkzMTNiM2RkNjlmNDYvNTgyNThkZTgvdmlkZW8vYy9kN2Y0MjQwNWZlY2E0ZDY2YmI0NjMyYzllYmY1NTYwNy8=","backup_url_1":"aHR0cDovL3Y2LnBzdGF0cC5jb20vdmlkZW8vYy9kN2Y0MjQwNWZlY2E0ZDY2YmI0NjMyYzllYmY1NTYwNy8/RXhwaXJlcz0xNDc4ODU5NzY4JkFXU0FjY2Vzc0tleUlkPXFoMGg5VGRjRU1ybTFWbFIyYWQlMkYmU2lnbmF0dXJlPUZDakVUc29vcThoZFF3T1ppRFplTHh4S1QlMkZnJTNE","preload_size":327680,"play_load_min_step":2,"play_load_max_step":10}}}",

"publish_time":1478370922,

"action_list":[

{

"action":1,

"extra":{

"desc":""

{

"action":3,

"extra":{

"desc":""

{

"action":7,

"extra":{

"desc":""

{

"action":9,

"extra":{

"desc":""

}

"cell_layout_style":1,

"tag_id":6349548387310305000,

"video_style":0,

"verified_content":"",

"display_url":"http://toutiao.com/group/6349548387310305537/",

"large_image_list":[

"item_id":6349554764748948000,

"repin_count":644,

"cell_flag":11,

"user_info":{

"user_id":6380739542,

"name":"快娱乐",

"verified_content":"",

"avatar_url":"http://p1.pstatp.com/thumb/6cb001cda8a0c6718e0",

"follow":false,

"user_verified":false,

"description":""

"source_open_url":"sslocal://media_account?media_id=6382924961",

"level":0,

"like_count":167,

"digg_count":167,

"behot_time":1478855563,

"cursor":1478855563999,

"url":"http://toutiao.com/group/6349548387310305537/",

"preload_web":0,

"user_repin":0,

"has_image":false,

"item_version":0,

"media_info":{

"user_id":6380739542,

"verified_content":"",

"avatar_url":"http://p2.pstatp.com/large/6cb001cda8a0c6718e0",

"media_id":6382924961,

"name":"快娱乐",

"follow":false,

"recommend_reason":"",

"is_star_user":false,

"user_verified":false

"group_id":6349548387310305000,

"middle_image":{

"url":"http://p1.pstatp.com/list/f8a0006db230575a16a",

"width":640,

"url_list":[

{

"url":"http://p1.pstatp.com/list/f8a0006db230575a16a"

{

"url":"http://p4.pstatp.com/list/f8a0006db230575a16a"

{

"url":"http://p.pstatp.com/list/f8a0006db230575a16a"

}

"uri":"list/f8a0006db230575a16a",

"height":282

}

下载视频：访问article_url 到文章页面，分析并求得视频url，然后下载。

具体如下：

(1)拿http://www.toutiao.com/a6345277767186268418/为例，用谷歌浏览器打开该网页，内容如图：按F12可检查视频url，如图：经次刷新，检查视频地址，如下：

http://v4.pstatp.com/f8da252eabe1c04285e88d59d5456f77/58202d03/video/c/d77569e2c637407180e5410d89a8a1b6/

http://v4.pstatp.com/a78185c3924c7a43a197a64ecbfc0325/58203cf5/video/c/d77569e2c637407180e5410d89a8a1b6/

http://v6.pstatp.com/video/c/d77569e2c637407180e5410d89a8a1b6/?Signature=%2BO79a1MPRqjDF6mX3k%2BMfI4glQM%3D&Expires=1478511382&KSSAccessKeyId=qh0h9TdcEMrm1VlR2ad/

http://v6.pstatp.com/video/c/d77569e2c637407180e5410d89a8a1b6/?Signature=WegICc2e0Xcb%2FxuriBVw7SxtZfY%3D&Expires=1478511397&KSSAccessKeyId=qh0h9TdcEMrm1VlR2a

http://v4.pstatp.com/68bff4aaceee235cbda85420869ee25a/58203d2b/video/c/d77569e2c637407180e5410d89a8a1b6/d/

http://v6.pstatp.com/video/c/d77569e2c637407180e5410d89a8a1b6/?Signature=H6jlwWrc6MZAFQ8eqn5h8C0qJXw%3D&Expires=1478511498&KSSAccessKeyId=qh0h9TdcEMrm1VlR2ad/

可知同一个视频，地址是即时的，每次都在变化，再访问以前的地址就被拒绝了，因此在求得url后需要立即下载。

(2)程序取视频url：由第3点有视频的文章下面陈列出的json文件可知，我们可以取到加密后的视频url，如：

"main_url":"aHR0cDovL3Y3LnBzdGF0cC5jb20vOGU3MmU3Yzk5YjAwMjg5ZjM0ODkzMTNiM2RkNjlmNDYvNTgyNThkZTgvdmlkZW8vYy9kN2Y0MjQwNWZlY2E0ZDY2YmI0NjMyYzllYmY1NTYwNy8="

那么是否可以将这个加密后的url解密？既然谷歌浏览器检查到的视频url是解密后的，那么我想前台可能会有解密的方法，继续用谷歌浏览器检查该网页，点击Network，观察网页在加载时所请求的文件，如图：据分析得出tt-video.js文件与视频有关，查看该文件的源代码，找到如下解密url的函数

//参数为main_url

//返回解密后的url

function base64decode (e) {

var t, r, n, o, i, a, u, l = [ - 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1];

for (a = e.length, i = 0, u = ""; i < a;) {

do t = l[255 & e.charCodeAt(i++)];

while (i < a && t == -1);

if (t == -1) break;

do r = l[255 & e.charCodeAt(i++)];

while (i < a && r == -1);

if (r == -1) break;

u += String.fromCharCode(t << 2 | (48 & r) >> 4);

do {

if (n = 255 & e.charCodeAt(i++), 61 == n) return u;

n = l[n]

} while ( i < a && n == - 1 );

if (n == -1) break;

u += String.fromCharCode((15 & r) << 4 | (60 & n) >> 2);

do {

if (o = 255 & e.charCodeAt(i++), 61 == o) return u;

o = l[o]

} while ( i < a && o == - 1 );

if (o == -1) break;

u += String.fromCharCode((3 & n) << 6 | o)

}

return u

}

取到视频url后，我们就可以下载该视频了，下载视频代码如下：

import os

import urllib

def downloadFile(url, filename):

directory = os.path.dirname(filename)

mkdir_p(directory)

urllib.urlretrieve(url, filename)

加载等多文章：当上拉查看更多文章时，经过抓包我们可以发现app请求的是同一个url只是参数有些变化，如图：

我们拿两个请求来举例

请求一

http://is.snssdk.com/api/news/feed/v47/?category=video&refer=1&count=20&min_behot_time=1478077174&last_refresh_sub_entrance_interval=1478077371&loc_mode=6&loc_time=1478076298&latitude=39.90511&longitude=116.355647&city=%E5%8C%97%E4%BA%AC%E5%B8%82&tt_from=pull&lac=4124&cid=43070&cp=53841b92aebbbq1&iid=6060889792&device_id=33418245041&ac=wifi&channel=xiaomi&aid=13&app_name=news_article&version_code=584&version_name=5.8.4&device_platform=android&ab_version=87590%2C86575%2C83095%2C86231%2C86001%2C79287%2C87752%2C87331%2C85046%2C86854%2C88106%2C87982%2C88088%2C87881%2C82679%2C87838%2C88067%2C87804%2C87828%2C87030%2C87498%2C87035%2C86724%2C87988&ab_client=a1%2Cc4%2Ce1%2Cf2%2Cg2%2Cf7&ab_feature=z1&abflag=3&ssmix=a&device_type=MI+2A&device_brand=Xiaomi&language=zh&os_api=16&os_version=4.1.1&uuid=860954025518090&openudid=60fcf5fe7e721c17&manifest_version_code=584&resolution=720*1280&dpi=320&update_version_code=5844&_rticket=1478077371937

请求二

http://is.snssdk.com/api/news/feed/v47/?category=video&refer=1&count=20&max_behot_time=1478074962&last_refresh_sub_entrance_interval=1478077377&loc_mode=6&loc_time=1478076298&latitude=39.90511&longitude=116.355647&city=%E5%8C%97%E4%BA%AC%E5%B8%82&tt_from=pre_load_more&lac=4124&cid=43070&cp=55841d9ba3bc1q1&iid=6060889792&device_id=33418245041&ac=wifi&channel=xiaomi&aid=13&app_name=news_article&version_code=584&version_name=5.8.4&device_platform=android&ab_version=87590%2C86575%2C83095%2C86231%2C86001%2C79287%2C87752%2C87331%2C85046%2C86854%2C88106%2C87982%2C88088%2C87881%2C82679%2C87838%2C88067%2C87804%2C87828%2C87030%2C87498%2C87035%2C86724%2C87988&ab_client=a1%2Cc4%2Ce1%2Cf2%2Cg2%2Cf7&ab_feature=z1&abflag=3&ssmix=a&device_type=MI+2A&device_brand=Xiaomi&language=zh&os_api=16&os_version=4.1.1&uuid=860954025518090&openudid=60fcf5fe7e721c17&manifest_version_code=584&resolution=720*1280&dpi=320&update_version_code=5844&_rticket=1478077377769

为了看清楚一些，把参数单独列出如下

concern_id 6286225228934679042

refer 1

count 20

max_behot_time 1478067863

last_refresh_sub_entrance_interval 1478075051

loc_mode 6

loc_time 1478072878

latitude 39.90511

longitude 116.355647

city 北京市

tt_from pre_load_more

lac 4124

cid 43070

cp 59831b9fa22abq1

iid 6060889792

device_id 33418245041

ac wifi

channel xiaomi

aid 13

app_name news_article

version_code 584

version_name 5.8.4

device_platform android

ab_version 87590,86575,83095,86231,86001,79287,87752,87331,85046,86854,88106,87982,88088,87881,82679,87838,88067,87804,87828,87030,87498,87035,86724,87988

ab_client a1,c4,e1,f2,g2,f7

ab_feature z1

abflag 3

ssmix a

device_type MI 2A

device_brand Xiaomi

language zh

os_api 16

os_version 4.1.1

uuid 860954025518090

openudid 60fcf5fe7e721c17

manifest_version_code 584

resolution 720*1280

dpi 320

update_version_code 5844

_rticket 1478075051350

经过相互对比，我们可知变化的参数为

max_behot_time 1478073762 #截止这个时间段的头条

cp 548a1492afbc3q1 #虽然改变但不影响显示结果不用管

last_refresh_sub_entrance_interval 1478077379 #当前时间精确到秒

_rticket 1478077379699 #当前时间精确到毫秒

因此我们只需要拼出这个地址，就可以加载更多文章了。

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