python爬虫实战之爬取QQ音乐
前言
- 开始
-
- 爬虫的四大步骤
- 思路
- 全部代码
- 最后
过去了相当的一段时间没有更新了，先证明一下自己还活着= =,就是忙着学习linux和mysql没时间发博客，现在有时间就来发一个爬虫进阶吧，爬取某Q音乐的音乐吧！！
开始
在开始的时候先声明一下某Q音乐的vip是不要想的了，因为某Q音乐的vip是要下客户端才能听,不说了某讯真会玩…
爬虫的四大步骤
1.目标url
2.发送请求
3.解析数据
4.清洗数据
5.保存数据
这几步基本每次都有强调因为觉得真的很重要，基本爬虫都是跟着这几步走的
当你了解这些之后我们就可以开始操作了！
思路
首先我们先打开我们想要爬取的主页，先分析一下 点我进去之后我们先随便找个歌手来点开一个音乐进行抓包
抓到了包之后我们来观察一下需要带什么参数
经过观察发现参数都是固定的,除了vkey发生了改变,最后通过查找抓包发现了vkey，说明了它不是一个加密参数
不仅找到了vkey也直接获得了m4a的链接，通过观察发现songmid应该和后面获取有联系…
接着我们继续查看此链接需要带的参数有啥
通过了观察发现2个参数是不一样的，就是data和sign这2个参数，接着使用search查找sign=的字段发现了端倪,发现里面有个带sign的值，显示了一个链接点我查看
发现是一堆js数据,最后解析使用解析工具解析，发现需要一个data的值来获得sign,那么这不是表明了这个参数的data传进去即可得到我想要的参数吗,于是开始动手测试看看
这里没下载PyExecJS的可以直接pip install PyExecJS进行下载
import execjs
def get_sign(data):
with open('get_sign.js', 'r', encoding='utf-8') as f:
text = f.read()
js_data = execjs.compile(text)
sign = js_data.call('get_sign', data)
return sign
if __name__ == "__main__":
#{"req":{"module":"CDN.SrfCdnDispatchServer","method":"GetCdnDispatch","param":{"guid":"1399367235","calltype":0,"userip":""}},"req_0":{"module":"vkey.GetVkeyServer","method":"CgiGetVkey","param":{"guid":"1399367235","songmid":["001QJyJ32zybEe"],"songtype":[0],"uin":"3320795610","loginflag":1,"platform":"20"}},"comm":{"uin":3320795610,"format":"json","ct":24,"cv":0}}
data = '{"req":{"module":"CDN.SrfCdnDispatchServer","method":"GetCdnDispatch","param":{"guid":"1399367235","calltype":0,"userip":""}},"req_0":{"module":"vkey.GetVkeyServer","method":"CgiGetVkey","param":{"guid":"1399367235","songmid":["0013WPvt4fQH2b"],"songtype":[0],"uin":"3320795610","loginflag":1,"platform":"20"}},"comm":{"uin":3320795610,"format":"json","ct":24,"cv":0}}'
sign = get_sign(data)
print(len(sign))
print(sign)
结果
sign的参数明显不符合我们看到的sign,不过细心的朋友可能观察到了，有很多相同的字符比如finedundf,结尾后面的参数有点像之前我们看到的参数的后面的一小串
于是我去掉多余相同字符使用zzaundefinedundec6ae8dd63f7322c19a65bba416a90d22的参数换上sign的值结果发现
原URL和带sign访问的链接
修改后访问的链接
ok完全一致
所以我们知道了data的数据是关键让sign发现改变的唯一参数,接下来我们看看data参数有什么不一样的改变
data: {
"req":{
"module":"CDN.SrfCdnDispatchServer","method":"GetCdnDispatch","param":{
"guid":"1399367235","calltype":0,"userip":""}},"req_0":{
"module":"vkey.GetVkeyServer","method":"CgiGetVkey","param":{
"guid":"1399367235","songmid":["0013WPvt4fQH2b"],"songtype":[0],"uin":"3320795610","loginflag":1,"platform":"20"}},"comm":{
"uin":3320795610,"format":"json","ct":24,"cv":0}}
经过发现我们观察到了data只有一个参数"songmid"在改变，仔细想想这不就是之前在vkey上看到的参数吗…
这下真相越来越接近了…
于是继续往上去查找,于是我们点开歌手的音乐榜单进行查看点我！！
进行抓包操作
仔细观察后发现这里的mid和之前在vkey看到的songmid是一模一样的
于是我们继续查看这条链接所需参数
通过观察发现这里的data的值的singmid和其他的不一样在发生改变，其他的没变，最后仔细一看发现，这就是明星的id号
于是我们接着往下走,到初始的位置看看是否能获取明星的id号 点我！！
结果
通过抓包找到了以下全部明星的名字和id号
还是一样，查看一下带的参数是什么
通过观察发现每次下一页这个值就会发生改变比如下一页之后的sin变为80,cur变为2以此类推下去,每页80个明星,有多少页写多少,其他的没发生改变,这里就不细说了，留个小伙伴们自己来做吧！！
到这里快讲完了，大家坚持到了这里真的很不容易，楼主写博客也不容易，如果觉得讲的不错的话，不妨给个赞再走吧~
好了所有参数全部搞定
全部代码
import requests
import re
import execjs
import os
class QQmusic(object):
def __init__(self):
self.headers={
'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36',
'Referer': 'https://y.qq.com/portal/singer_list.html',
}
#主函数
def run(self):
data='{"comm":{"ct":24,"cv":0},"singerList":{"module":"Music.SingerListServer","method":"get_singer_list","param":{"area":-100,"sex":-100,"genre":-100,"index":-100,"sin":0,"cur_page":1}}}'
sign=self.get_sign(data)
#注,这里的0,1是下一页的明星号如下一页是80,2,有需要可以自行修改
#这里是解析明星的名字和id号
url = 'https://u.y.qq.com/cgi-bin/musics.fcg?-=getUCGI20079930333012497&g_tk=1541691288&' \
'sign={}&loginUin=3320795610&hostUin=0&format=json&inCharset=utf8&outCharset=utf-8¬ice=0&platform=yqq.json&needNewCode=0&data=%7B%22comm%22%3A%7B%22ct%22%3A24%2C%22cv%22%3A0%7D%2C%22singerList%22%3A%7B%22module%22%3A%22Music.SingerListServer%22%2C%22method%22%3A%22get_singer_list%22%2C%22param%22%3A%7B%22area%22%3A-100%2C%22sex%22%3A-100%2C%22genre%22%3A-100%2C%22index%22%3A-100%2C%22' \
'sin%22%3A{}%2C%22' \
'cur_page%22%3A{}%7D%7D%7D'.format(sign, 0, 1)
response=self.parse_url(url)
#明星id号
data_id_list,name_list=self.parse_data(response)
n=0
s=1
for name in name_list:
print("%d %s "%(n,name),end=' ')
if n==10*s:
print('\n')
s=s+1
n=n+1
n=int(input("\n请输入明星的序列号:"))
print("你选择了"+name_list[n])
url_data = '{"comm":{"ct":24,"cv":0},"singerSongList":{"method":"GetSingerSongList","param":{"order":1,"singerMid":"%s","begin":0,"num":10},"module":"musichall.song_list_server"}}'%str(data_id_list[n])
url_html = self.get_sign(url_data)
music_html='https://u.y.qq.com/cgi-bin/musics.fcg?-=getSingerSong9337150917069357&g_tk=1541691288&sign={}&' \
'loginUin=3320795610&hostUin=0&format=json&inCharset=utf8&outCharset=utf-8¬ice=0&platform=yqq.json&needNewCode=0&' \
'data=%7B%22comm%22%3A%7B%22ct%22%3A24%2C%22cv%22%3A0%7D%2C%22singerSongList%22%3A%7B%22method%22%3A%22GetSingerSongList%22%2C%22param%22%3A%7B%22order%22%3A1%2C%22singerMid%22%3A%22{}%22%2C%22begin%22%3A0%2C%22num%22%3A10%7D%2C%22module%22%3A%22musichall.song_list_server%22%7D%7D'.format(url_html,data_id_list[n])
#歌手的歌名
html_list=self.parse_url(music_html)
music,title=self.music_list(html_list,name_list[n])
music_data='{"req":{"module":"CDN.SrfCdnDispatchServer","method":"GetCdnDispatch","param":{"guid":"1399367235","calltype":0,"userip":""}},"req_0"' \
':{"module":"vkey.GetVkeyServer","method":"CgiGetVkey","param":{"guid":"1399367235",' \
'"songmid":["%s"],"songtype":[0],"uin":"3320795610","loginflag":1,"platform":"20"}},"comm":{"uin":3320795610,"format":"json","ct":24,"cv":0}}'%(str(music))
#获取音乐的钥匙
url_html=self.get_sign(music_data)
#最后钥匙的链接啦
html='https://u.y.qq.com/cgi-bin/musics.fcg?-=getplaysongvkey37572959288093255&g_tk=1541691288&sign={}&' \
'loginUin=3320795610&hostUin=0&format=json&inCharset=utf8&outCharset=utf-8¬ice=0&platform=yqq.json&needNewCode=0&data=%7B%22req%22%3A%7B%22module%22%3A%22CDN.SrfCdnDispatchServer' \
'%22%2C%22method%22%3A%22GetCdnDispatch%22%2C%22param%22%3A%7B%22guid%22%3A%221399367235%22%2C%22calltype%22%3A0%2C%22userip%22%3A%22%22%7D%7D%2C%22req_0%22%3A%7B%22module%22%3A%22vkey.GetVkeyServer%22%2C%22method%22%3A%22CgiGetVkey%22%2C%22param%22%3A%7B%22guid%22%3A%221399367235%22%2C%22' \
'songmid%22%3A%5B%22{}%22%5D%2C%22songtype%22%3A%5B0%5D%2C%22uin%22%3A%223320795610%22%2C%22loginflag%22%3A1%2C%22platform%' \
'22%3A%2220%22%7D%7D%2C%22comm%22%3A%7B%22uin%22%3A3320795610%2C%22format%22%3A%22json%22%2C%22ct%22%3A24%2C%22cv%22%3A0%7D%7D'.format(url_html,music)
data_key=self.parse_url(html)
link=self.html_key(data_key)
print(link)
print("结束!! 祝你使用愉快^_^")
#保存
self.with_open(link,title)
#js加密函数
def get_sign(self,data):
with open('get_sign.js', 'r', encoding='utf-8') as f:
text = f.read()
js_data = execjs.compile(text)
sign_id = js_data.call('get_sign', data)
#清洗数据获取真正的sign
sign = re.sub("finedunde", "", sign_id).replace("zzaundefined", "")
sign = "zzaundefinedunde" + sign
return sign
#解析url函数
def parse_url(self,url):
reponse=requests.get(url=url,headers=self.headers).json()
return reponse
#清洗数据获取想要的参数
def parse_data(self,response):
music_name=[]
music_id=[]
#明星的名字,这是第一页，如果有要求可以自己改
for i in range(0,80):
music_name.append(response['singerList']['data']['singerlist'][i]['singer_name'])
# print(music_name)
#明星的id号
music_id.append(response['singerList']['data']['singerlist'][i]['singer_mid'])
# print(music_id)
return music_id,music_name
#歌名清洗
def music_list(self,html_list,name):
print("------------------------------------"+name+"的歌单------------------------------------")
for i in range(0,10):
print(str(i)+" "+html_list['singerSongList']['data']['songList'][i]['songInfo']['name'])
#这里是第3个歌
n=int(input("请选择歌单序列号:"))
music=html_list['singerSongList']['data']['songList'][n]['songInfo']['mid']
music_name=html_list['singerSongList']['data']['songList'][n]['songInfo']['name']
return music,music_name
#链接的获取
def html_key(self,data_key):
req=data_key['req_0']['data']['midurlinfo'][0]['purl']
req="https://ws.stream.qqmusic.qq.com/"+req
# print(req)
return req
#保存
def with_open(self,link,title):
root = './download'
if not os.path.exists(root):
os.mkdir(root)
res=requests.get(link, headers=self.headers).content
with open(os.path.join(root, '{}.mp3'.format(title)),'wb') as f:
f.write(res)
print(title+' 下载成功')
if __name__ == '__main__':
qq_music=QQmusic()
qq_music.run()
get_sign.js代码
this.window = this;
var sign = null;
!
function(n, t) {
"object" == typeof exports && "undefined" != typeof module ? module.exports = t() : "function" == typeof define && define.amd ? define(t) : (n = n || self).getSecuritySign = t()
} (this,
function() {
"use strict";
var n = function() {
if ("undefined" != typeof self) return self;
if ("undefined" != typeof window) return window;
if ("undefined" != typeof global) return global;
throw new Error("unable to locate global object")
} ();
n.__sign_hash_20200305 = function(n) {
function l(n, t) {
var o = (65535 & n) + (65535 & t);
return (n >> 16) + (t >> 16) + (o >> 16) << 16 | 65535 & o
}
function r(n, t, o, e, u, p) {
return l((i = l(l(t, n), l(e, p))) << (r = u) | i >>> 32 - r, o);
var i, r
}
function g(n, t, o, e, u, p, i) {
return r(t & o | ~t & e, n, t, u, p, i)
}
function a(n, t, o, e, u, p, i) {
return r(t & e | o & ~e, n, t, u, p, i)
}
function s(n, t, o, e, u, p, i) {
return r(t ^ o ^ e, n, t, u, p, i)
}
function v(n, t, o, e, u, p, i) {
return r(o ^ (t | ~e), n, t, u, p, i)
}
function t(n) {
return function(n) {
var t, o = "";
for (t = 0; t < 32 * n.length; t += 8) o += String.fromCharCode(n[t >> 5] >>> t % 32 & 255);
return o
} (function(n, t) {
n[t >> 5] |= 128 << t % 32,
n[14 + (t + 64 >>> 9 << 4)] = t;
var o, e, u, p, i, r = 1732584193,
f = -271733879,
h = -1732584194,
c = 271733878;
for (o = 0; o < n.length; o += 16) r = g(e = r, u = f, p = h, i = c, n[o], 7, -680876936),
c = g(c, r, f, h, n[o + 1], 12, -389564586),
h = g(h, c, r, f, n[o + 2], 17, 606105819),
f = g(f, h, c, r, n[o + 3], 22, -1044525330),
r = g(r, f, h, c, n[o + 4], 7, -176418897),
c = g(c, r, f, h, n[o + 5], 12, 1200080426),
h = g(h, c, r, f, n[o + 6], 17, -1473231341),
f = g(f, h, c, r, n[o + 7], 22, -45705983),
r = g(r, f, h, c, n[o + 8], 7, 1770035416),
c = g(c, r, f, h, n[o + 9], 12, -1958414417),
h = g(h, c, r, f, n[o + 10], 17, -42063),
f = g(f, h, c, r, n[o + 11], 22, -1990404162),
r = g(r, f, h, c, n[o + 12], 7, 1804603682),
c = g(c, r, f, h, n[o + 13], 12, -40341101),
h = g(h, c, r, f, n[o + 14], 17, -1502002290),
r = a(r, f = g(f, h, c, r, n[o + 15], 22, 1236535329), h, c, n[o + 1], 5, -165796510),
c = a(c, r, f, h, n[o + 6], 9, -1069501632),
h = a(h, c, r, f, n[o + 11], 14, 643717713),
f = a(f, h, c, r, n[o], 20, -373897302),
r = a(r, f, h, c, n[o + 5], 5, -701558691),
c = a(c, r, f, h, n[o + 10], 9, 38016083),
h = a(h, c, r, f, n[o + 15], 14, -660478335),
f = a(f, h, c, r, n[o + 4], 20, -405537848),
r = a(r, f, h, c, n[o + 9], 5, 568446438),
c = a(c, r, f, h, n[o + 14], 9, -1019803690),
h = a(h, c, r, f, n[o + 3], 14, -187363961),
f = a(f, h, c, r, n[o + 8], 20, 1163531501),
r = a(r, f, h, c, n[o + 13], 5, -1444681467),
c = a(c, r, f, h, n[o + 2], 9, -51403784),
h = a(h, c, r, f, n[o + 7], 14, 1735328473),
r = s(r, f = a(f, h, c, r, n[o + 12], 20, -1926607734), h, c, n[o + 5], 4, -378558),
c = s(c, r, f, h, n[o + 8], 11, -2022574463),
h = s(h, c, r, f, n[o + 11], 16, 1839030562),
f = s(f, h, c, r, n[o + 14], 23, -35309556),
r = s(r, f, h, c, n[o + 1], 4, -1530992060),
c = s(c, r, f, h, n[o + 4], 11, 1272893353),
h = s(h, c, r, f, n[o + 7], 16, -155497632),
f = s(f, h, c, r, n[o + 10], 23, -1094730640),
r = s(r, f, h, c, n[o + 13], 4, 681279174),
c = s(c, r, f, h, n[o], 11, -358537222),
h = s(h, c, r, f, n[o + 3], 16, -722521979),
f = s(f, h, c, r, n[o + 6], 23, 76029189),
r = s(r, f, h, c, n[o + 9], 4, -640364487),
c = s(c, r, f, h, n[o + 12], 11, -421815835),
h = s(h, c, r, f, n[o + 15], 16, 530742520),
r = v(r, f = s(f, h, c, r, n[o + 2], 23, -995338651), h, c, n[o], 6, -198630844),
c = v(c, r, f, h, n[o + 7], 10, 1126891415),
h = v(h, c, r, f, n[o + 14], 15, -1416354905),
f = v(f, h, c, r, n[o + 5], 21, -57434055),
r = v(r, f, h, c, n[o + 12], 6, 1700485571),
c = v(c, r, f, h, n[o + 3], 10, -1894986606),
h = v(h, c, r, f, n[o + 10], 15, -1051523),
f = v(f, h, c, r, n[o + 1], 21, -2054922799),
r = v(r, f, h, c, n[o + 8], 6, 1873313359),
c = v(c, r, f, h, n[o + 15], 10, -30611744),
h = v(h, c, r, f, n[o + 6], 15, -1560198380),
f = v(f, h, c, r, n[o + 13], 21, 1309151649),
r = v(r, f, h, c, n[o + 4], 6, -145523070),
c = v(c, r, f, h, n[o + 11], 10, -1120210379),
h = v(h, c, r, f, n[o + 2], 15, 718787259),
f = v(f, h, c, r, n[o + 9], 21, -343485551),
r = l(r, e),
f = l(f, u),
h = l(h, p),
c = l(c, i);
return [r, f, h, c]
} (function(n) {
var t, o = [];
for (o[(n.length >> 2) - 1] = void 0, t = 0; t < o.length; t += 1) o[t] = 0;
for (t = 0; t < 8 * n.length; t += 8) o[t >> 5] |= (255 & n.charCodeAt(t / 8)) << t % 32;
return o
} (n), 8 * n.length))
}
function o(n) {
return t(unescape(encodeURIComponent(n)))
}
return function(n) {
var t, o, e = "0123456789abcdef",
u = "";
for (o = 0; o < n.length; o += 1) t = n.charCodeAt(o),
u += e.charAt(t >>> 4 & 15) + e.charAt(15 & t);
return u
} (o(n))
},
function r(f, h, c, l, g) {
g = g || [[this], [{
}]];
for (var t = [], o = null, n = [function() {
return ! 0
},
function() {
},
function() {
g.length = c[h++]
},
function() {
g.push(c[h++])
},
function() {
g.pop()
},
function() {
var n = c[h++],
t = g[g.length - 2 - n];
g[g.length - 2 - n] = g.pop(),
g.push(t)
},
function() {
g.push(g[g.length - 1])
},
function() {
g.push([g.pop(), g.pop()].reverse())
},
function() {
g.push([l, g.pop()])
},
function() {
g.push([g.pop()])
},
function() {
var n = g.pop();
g.push(n[0][n[1]])
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function() {
g.push(g[g.pop()[0]][0])
},
function() {
var n = g[g.length - 2];
n[0][n[1]] = g[g.length - 1]
},
function() {
g[g[g.length - 2][0]][0] = g[g.length - 1]
},
function() {
var n = g.pop(),
t = g.pop();
g.push([t[0][t[1]], n])
},
function() {
var n = g.pop();
g.push([g[g.pop()][0], n])
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var n = g.pop();
g.push(delete n[0][n[1]])
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var n = [];
for (var t in g.pop()) n.push(t);
g.push(n)
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g[g.length - 1].length ? g.push(g[g.length - 1].shift(), !0) : g.push(void 0, !1)
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t = Object.getOwnPropertyDescriptor(n[0], n[1]) || {
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enumerable: !0
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},
function() {
h = c[h++]
},
function() {
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g[g.length - 1] && (h = n)
},
function() {
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},
function() {
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g.push(g.pop().apply(l, t))
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function() {
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g.push(o[0][o[1]].apply(o[0], t))
},
function() {
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t = n ? g.slice( - n) : [];
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t.unshift(null),
g.push(new(Function.prototype.bind.apply(g.pop(), t)))
},
function() {
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t = n ? g.slice( - n) : [];
g.length -= n,
t.unshift(null);
var o = g.pop();
g.push(new(Function.prototype.bind.apply(o[0][o[1]], t)))
},
function() {
g.push(!g.pop())
},
function() {
g.push(~g.pop())
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function() {
g.push(typeof g.pop())
},
function() {
g[g.length - 2] = g[g.length - 2] == g.pop()
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function() {
g[g.length - 2] = g[g.length - 2] === g.pop()
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function() {
g[g.length - 2] = g[g.length - 2] > g.pop()
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function() {
g[g.length - 2] = g[g.length - 2] >= g.pop()
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function() {
g[g.length - 2] = g[g.length - 2] << g.pop()
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function() {
g[g.length - 2] = g[g.length - 2] >> g.pop()
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function() {
g[g.length - 2] = g[g.length - 2] >>> g.pop()
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function() {
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function() {
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function() {
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function() {
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function() {
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function() {
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function() {
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function() {
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function() {
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function() {
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function() {
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function() {
o = null
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function() {
g[g.length - 1] += String.fromCharCode(c[h++])
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function() {
g.push("")
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function() {
g.push(void 0)
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function() {
g.push(null)
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function() {
g.push(!0)
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function() {
g.push(!1)
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function() {
g.length -= c[h++]
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function() {
g[g.length - 1] = c[h++]
},
function() {
var n = g.pop(),
t = g[g.length - 1];
t[0][t[1]] = g[n[0]][0]
},
function() {
var n = g.pop(),
t = g[g.length - 1];
t[0][t[1]] = n[0][n[1]]
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function() {
var n = g.pop(),
t = g[g.length - 1];
g[t[0]][0] = g[n[0]][0]
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function() {
var n = g.pop(),
t = g[g.length - 1];
g[t[0]][0] = n[0][n[1]]
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function() {
g[g.length - 2] = g[g.length - 2] < g.pop()
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function() {
g[g.length - 2] = g[g.length - 2] <= g.pop()
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for (; ! n[c[h++]](););
if (o) throw o;
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} catch(n) {
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if (void 0 === e) throw n;
o = n,
h = e[0],
g.length = e[1],
e[2] && (g[e[2]][0] = o)
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var t = n.__getSecuritySign;
sign=t;
return t;
});
function get_sign(data){
return sign(data)
};
最后
代码上有很多注释，不明白的可以查看，如想爬全部可以修改我上面说的参数，这里做示范就爬一页哦~
这里还有很多可以优化的(比如多线程爬虫,和利用框架)，大家可以自行修改，来让他更加的完善，这个就交给大家啦,可以有锻炼自己的机会= =(说白就是我太懒了)…
奉上图片
