技术标签: 淘宝网数据爬取 python3 爬虫 python3爬取淘宝网 Python Python3爬虫
在这里我就不再一一介绍每个步骤的具体操作了,因为在上一次爬取今日头条数据的时候都已经讲的非常清楚了,所以在这里我只会在重点上讲述这个是这么实现的,如果想要看具体步骤请先去看我今日头条的文章内容,里面有非常详细的介绍以及是怎么找到加密js代码和api接口。
Python3爬取今日头条文章视频数据,完美解决as、cp、_signature的加密方法
855262907
这次选择的是淘宝网热卖
而不是淘宝网
,二者虽然名字有不同,但是数据还是一样的,区别就在于前者把后者的所有店铺和商品的海量数据按照销售量、好评度、信誉度综合测评、重新计算、重新排序展现给买家的一个导购网站。
找到准确数据:
请求参数对比:
jsv: 2.4.0
appKey: 12574478
t: 1597626852590
sign: 457c09a81147eb493d1f58ad6ab64d52
api: mtop.alimama.union.sem.landing.pc.items
v: 1.0
AntiCreep: true
dataType: jsonp
type: jsonp
ecode: 0
callback: mtopjsonp1
data: {"keyword":"女装","ppath":"","loc":"","minPrice":"","maxPrice":"","ismall":"","ship":"","itemAssurance":"","exchange7":"","custAssurance":"","b":"","clk1":"91a160066daf9f8b69646bd610341da7","pvoff":"","pageSize":"100","page":"","elemtid":"1","refpid":"mm_26632258_3504122_32538762","pid":"430673_1006","featureNames":"spGoldMedal,dsrDescribe,dsrDescribeGap,dsrService,dsrServiceGap,dsrDeliver, dsrDeliverGap","ac":"5TGcF6nyjHkCAXt4MaK1QH5c","wangwangid":"","catId":""}
jsv: 2.4.0
appKey: 12574478
t: 1597626856031
sign: 4a87f4308903ded469a1328275ded458
api: mtop.alimama.union.sem.landing.pc.items
v: 1.0
AntiCreep: true
dataType: jsonp
type: jsonp
ecode: 0
callback: mtopjsonp1
data: {"keyword":"女装","ppath":"","loc":"","minPrice":"","maxPrice":"","ismall":"","ship":"","itemAssurance":"","exchange7":"","custAssurance":"","b":"","clk1":"91a160066daf9f8b69646bd610341da7","pvoff":"","pageSize":"100","page":"","elemtid":"1","refpid":"mm_26632258_3504122_32538762","pid":"430673_1006","featureNames":"spGoldMedal,dsrDescribe,dsrDescribeGap,dsrService,dsrServiceGap,dsrDeliver, dsrDeliverGap","ac":"5TGcF6nyjHkCAXt4MaK1QH5c","wangwangid":"","catId":""}
发现请求数据
有所改变的地方只有t
和sign
以及data
中的page
和ac
,其他均没有发生改变,t
参数明眼就能猜出是时间戳
,sign
参数还得通过调试和阅读源码进行逆向分析。
发现sign
和t
以及其他参数
都在这里面构造的。
所以我们现在开始下断点调试这些参数,得出sign
参数的构造过程。可以发现t就是当前时间戳
,然后sign
是由h(d.token + "&" + i + "&" + g + "&" + c.data)
构成,d.token
是this.options.token
也就是cookie
值中的_m_h5_tk
参数的前部分,i
是时间戳
,g
就是12574478
,c.data
就是this.params.data
。
this.options.token = e4a0bbef377f5792e1852f92581f769c
(参考值)
this.params.data = {"keyword":"女装","ppath":"","loc":"","minPrice":"","maxPrice":"","ismall":"","ship":"","itemAssurance":"","exchange7":"","custAssurance":"","b":"","clk1":"91a160066daf9f8b69646bd610341da7","pvoff":"","pageSize":"100","page":"","elemtid":"1","refpid":"mm_26632258_3504122_32538762","pid":"430673_1006","featureNames":"spGoldMedal,dsrDescribe,dsrDescribeGap,dsrService,dsrServiceGap,dsrDeliver, dsrDeliverGap","ac":"5TGcF6nyjHkCAXt4MaK1QH5c","wangwangid":"","catId":""}
h函数就是下图所示。
function h(a) {
function b(a, b) {
return a << b | a >>> 32 - b
}
function c(a, b) {
var c, d, e, f, g;
return e = 2147483648 & a,
f = 2147483648 & b,
c = 1073741824 & a,
d = 1073741824 & b,
g = (1073741823 & a) + (1073741823 & b),
c & d ? 2147483648 ^ g ^ e ^ f : c | d ? 1073741824 & g ? 3221225472 ^ g ^ e ^ f : 1073741824 ^ g ^ e ^ f : g ^ e ^ f
}
function d(a, b, c) {
return a & b | ~a & c
}
function e(a, b, c) {
return a & c | b & ~c
}
function f(a, b, c) {
return a ^ b ^ c
}
function g(a, b, c) {
return b ^ (a | ~c)
}
function h(a, e, f, g, h, i, j) {
return a = c(a, c(c(d(e, f, g), h), j)),
c(b(a, i), e)
}
function i(a, d, f, g, h, i, j) {
return a = c(a, c(c(e(d, f, g), h), j)),
c(b(a, i), d)
}
function j(a, d, e, g, h, i, j) {
return a = c(a, c(c(f(d, e, g), h), j)),
c(b(a, i), d)
}
function k(a, d, e, f, h, i, j) {
return a = c(a, c(c(g(d, e, f), h), j)),
c(b(a, i), d)
}
function l(a) {
for (var b, c = a.length, d = c + 8, e = (d - d % 64) / 64, f = 16 * (e + 1), g = new Array(f - 1), h = 0, i = 0; c > i; )
b = (i - i % 4) / 4,
h = i % 4 * 8,
g[b] = g[b] | a.charCodeAt(i) << h,
i++;
return b = (i - i % 4) / 4,
h = i % 4 * 8,
g[b] = g[b] | 128 << h,
g[f - 2] = c << 3,
g[f - 1] = c >>> 29,
g
}
function m(a) {
var b, c, d = "", e = "";
for (c = 0; 3 >= c; c++)
b = a >>> 8 * c & 255,
e = "0" + b.toString(16),
d += e.substr(e.length - 2, 2);
return d
}
function n(a) {
a = a.replace(/\r\n/g, "\n");
for (var b = "", c = 0; c < a.length; c++) {
var d = a.charCodeAt(c);
128 > d ? b += String.fromCharCode(d) : d > 127 && 2048 > d ? (b += String.fromCharCode(d >> 6 | 192),
b += String.fromCharCode(63 & d | 128)) : (b += String.fromCharCode(d >> 12 | 224),
b += String.fromCharCode(d >> 6 & 63 | 128),
b += String.fromCharCode(63 & d | 128))
}
return b
}
var o, p, q, r, s, t, u, v, w, x = [], y = 7, z = 12, A = 17, B = 22, C = 5, D = 9, E = 14, F = 20, G = 4, H = 11, I = 16, J = 23, K = 6, L = 10, M = 15, N = 21;
for (a = n(a),
x = l(a),
t = 1732584193,
u = 4023233417,
v = 2562383102,
w = 271733878,
o = 0; o < x.length; o += 16)
p = t,
q = u,
r = v,
s = w,
t = h(t, u, v, w, x[o + 0], y, 3614090360),
w = h(w, t, u, v, x[o + 1], z, 3905402710),
v = h(v, w, t, u, x[o + 2], A, 606105819),
u = h(u, v, w, t, x[o + 3], B, 3250441966),
t = h(t, u, v, w, x[o + 4], y, 4118548399),
w = h(w, t, u, v, x[o + 5], z, 1200080426),
v = h(v, w, t, u, x[o + 6], A, 2821735955),
u = h(u, v, w, t, x[o + 7], B, 4249261313),
t = h(t, u, v, w, x[o + 8], y, 1770035416),
w = h(w, t, u, v, x[o + 9], z, 2336552879),
v = h(v, w, t, u, x[o + 10], A, 4294925233),
u = h(u, v, w, t, x[o + 11], B, 2304563134),
t = h(t, u, v, w, x[o + 12], y, 1804603682),
w = h(w, t, u, v, x[o + 13], z, 4254626195),
v = h(v, w, t, u, x[o + 14], A, 2792965006),
u = h(u, v, w, t, x[o + 15], B, 1236535329),
t = i(t, u, v, w, x[o + 1], C, 4129170786),
w = i(w, t, u, v, x[o + 6], D, 3225465664),
v = i(v, w, t, u, x[o + 11], E, 643717713),
u = i(u, v, w, t, x[o + 0], F, 3921069994),
t = i(t, u, v, w, x[o + 5], C, 3593408605),
w = i(w, t, u, v, x[o + 10], D, 38016083),
v = i(v, w, t, u, x[o + 15], E, 3634488961),
u = i(u, v, w, t, x[o + 4], F, 3889429448),
t = i(t, u, v, w, x[o + 9], C, 568446438),
w = i(w, t, u, v, x[o + 14], D, 3275163606),
v = i(v, w, t, u, x[o + 3], E, 4107603335),
u = i(u, v, w, t, x[o + 8], F, 1163531501),
t = i(t, u, v, w, x[o + 13], C, 2850285829),
w = i(w, t, u, v, x[o + 2], D, 4243563512),
v = i(v, w, t, u, x[o + 7], E, 1735328473),
u = i(u, v, w, t, x[o + 12], F, 2368359562),
t = j(t, u, v, w, x[o + 5], G, 4294588738),
w = j(w, t, u, v, x[o + 8], H, 2272392833),
v = j(v, w, t, u, x[o + 11], I, 1839030562),
u = j(u, v, w, t, x[o + 14], J, 4259657740),
t = j(t, u, v, w, x[o + 1], G, 2763975236),
w = j(w, t, u, v, x[o + 4], H, 1272893353),
v = j(v, w, t, u, x[o + 7], I, 4139469664),
u = j(u, v, w, t, x[o + 10], J, 3200236656),
t = j(t, u, v, w, x[o + 13], G, 681279174),
w = j(w, t, u, v, x[o + 0], H, 3936430074),
v = j(v, w, t, u, x[o + 3], I, 3572445317),
u = j(u, v, w, t, x[o + 6], J, 76029189),
t = j(t, u, v, w, x[o + 9], G, 3654602809),
w = j(w, t, u, v, x[o + 12], H, 3873151461),
v = j(v, w, t, u, x[o + 15], I, 530742520),
u = j(u, v, w, t, x[o + 2], J, 3299628645),
t = k(t, u, v, w, x[o + 0], K, 4096336452),
w = k(w, t, u, v, x[o + 7], L, 1126891415),
v = k(v, w, t, u, x[o + 14], M, 2878612391),
u = k(u, v, w, t, x[o + 5], N, 4237533241),
t = k(t, u, v, w, x[o + 12], K, 1700485571),
w = k(w, t, u, v, x[o + 3], L, 2399980690),
v = k(v, w, t, u, x[o + 10], M, 4293915773),
u = k(u, v, w, t, x[o + 1], N, 2240044497),
t = k(t, u, v, w, x[o + 8], K, 1873313359),
w = k(w, t, u, v, x[o + 15], L, 4264355552),
v = k(v, w, t, u, x[o + 6], M, 2734768916),
u = k(u, v, w, t, x[o + 13], N, 1309151649),
t = k(t, u, v, w, x[o + 4], K, 4149444226),
w = k(w, t, u, v, x[o + 11], L, 3174756917),
v = k(v, w, t, u, x[o + 2], M, 718787259),
u = k(u, v, w, t, x[o + 9], N, 3951481745),
t = c(t, p),
u = c(u, q),
v = c(v, r),
w = c(w, s);
var O = m(t) + m(u) + m(v) + m(w);
return O.toLowerCase()
}
发现这个h
函数就是个md5加密方式,这样的话也就太容易了。
page
参数一看就知道是页数了,第一页为空,第二页为2,如:访问第一页时,page:""
,访问第二页时,page:"2"
,后面以此类推。
ac参数就是我们cookie值中的cna参数值,cna参数值得访问网站获得https://log.mmstat.com/eg.js
,获得
代码如下:
import requests
session = requests.Session()
headers = {
'authority': 'log.mmstat.com',
'method': 'GET',
'path': '/eg.js',
'scheme': 'https',
'accept': '*/*',
'accept-encoding': 'gzip, deflate, br',
'accept-language': 'zh-CN,zh;q=0.9',
'referer': "https://uland.taobao.com/sem/tbsearch?spm=a2e15.8261149.07626516003.1.7ab029b4ZS1aM4&refpid=mm_26632258_3504122_32538762&keyword=%E6%B7%98%E5%AE%9D&clk1=f1a5efd94339f0e6e7cba63ed79b8554&upsid=f1a5efd94339f0e6e7cba63ed79b8554&page=2&_input_charset=utf-8",
'sec-fetch-dest': 'script',
'sec-fetch-mode': 'no-cors',
'sec-fetch-site': 'cross-site',
'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36'
}
session.get('https://log.mmstat.com/eg.js', headers=headers)
print(session.cookies.get('cna'))
有人可能说我为什么会知道这些,因为我认真的分析了整个网站,这个部分的分析过程就不放出来了。
前面已经分析了整个网站了,废话不多说了,直接开始上开始上全代码了,复制过去就可以直接运行的代码,淘宝对每个结果最多只显示100页,所以这里也只有100页,如果你需要搜索的与我的不同自己直接修改即可。
import hashlib
import time
import requests
from urllib import parse
import json
class TaoBao():
def __init__(self,keyword):
self.keyword = keyword
self.session = requests.Session()
self.cookies = {
}
self.data = {
}
self.params = {
}
self.headers = {
}
for page in range(1,100+1):
if page == 1:
self.get_url()
self.get_m_h5_tk()
self.get_cna()
self.get_data(page)
else:
self.get_data(page)
def to_cookie(self):
cookie = ''
for key, value in self.cookies.items():
if '_m_h5' in key or 'cna' == key:
cookie += key + '=' + value + '; '
return cookie
def h(self,a):
md5 = hashlib.md5()
md5.update(a.encode())
return md5.hexdigest()
# 获取uland地址和clk1值
def get_url(self):
headers = {
"Host":"redirect.simba.taobao.com",
"Upgrade-Insecure-Requests":"1",
"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36",
"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
"Accept-Encoding":"gzip, deflate",
"Accept-Language":"zh-CN,zh;q=0.9",
"Connection":"keep-alive"
}
url = 'http://redirect.simba.taobao.com/rd?c=un&w=unionsem&k=74175f13c74157df&p=mm_26632258_3504122_32538762&b=R9JQC0peugGMqgRlL5O&s={keyword}&f=https%3A%2F%2Fuland.taobao.com%2Fsem%2Ftbsearch%3Frefpid%3Dmm_26632258_3504122_32538762%26keyword{keywords}'.format(keyword=parse.quote(self.keyword),keywords=parse.quote(parse.quote('='+self.keyword)))
response = self.session.get(url,headers=headers,allow_redirects=False)
self.clk1 = response.headers.get('Location').split('&')[2]
self.uland_url = response.headers.get('Location')
# 获取_m_h5_tk和_m_h5_tk_enc
def get_m_h5_tk(self):
self.data = {
"keyword": self.keyword,
"ppath": "", "loc": "",
"minPrice": "",
"maxPrice": "",
"ismall": "",
"ship": "",
"itemAssurance": "",
"exchange7": "",
"custAssurance": "",
"b": "",
"clk1": self.clk1,
"pvoff": "",
"pageSize": "100",
"page": "",
"elemtid": "1",
"refpid": "mm_26632258_3504122_32538762",
"pid": "430673_1006",
"featureNames": "spGoldMedal,dsrDescribe,dsrDescribeGap,dsrService,dsrServiceGap,dsrDeliver, dsrDeliverGap",
"ac": "",
"wangwangid": "",
"catId": ""
}
self.timestamp = str(time.time()).replace('.', '')[:13]
self.params = {
'jsv': '2.4.0',
'appKey': '12574478',
't': self.timestamp,
'sign': self.h('undefined' + "&" + self.timestamp + "&" + '12574478' + "&" + json.dumps(self.data,ensure_ascii=False).replace(' ', '')),
'api': 'mtop.alimama.union.sem.landing.pc.items',
'v': '1.0',
'AntiCreep': 'true',
'dataType': 'jsonp',
'type': 'jsonp',
'ecode': '0',
'callback': 'mtopjsonp1',
'data': json.dumps(self.data, ensure_ascii=False).replace(' ', '')
}
self.headers = {
'host': 'h5api.m.taobao.com',
'accept': '*/*',
'accept-encoding': 'gzip, deflate, br',
'accept-language': 'zh-Hans-CN, zh-Hans; q=0.8, en-US; q=0.5, en; q=0.3',
'referer': self.uland_url,
'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36',
}
self.session.get('https://h5api.m.taobao.com' + '/h5/mtop.alimama.union.sem.landing.pc.items/1.0/?' + parse.urlencode(self.params), headers=self.headers)
for key, value in self.session.cookies.items():
self.cookies[key] = value
self.token = self.cookies['_m_h5_tk'].split('_')[0]
# 获取cna
def get_cna(self):
headers = {
'authority': 'log.mmstat.com',
'method': 'GET',
'path': '/eg.js',
'scheme': 'https',
'accept': '*/*',
'accept-encoding': 'gzip, deflate, br',
'accept-language': 'zh-CN,zh;q=0.9',
'referer': self.uland_url,
'sec-fetch-dest': 'script',
'sec-fetch-mode': 'no-cors',
'sec-fetch-site': 'cross-site',
'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36'
}
self.session.get('https://log.mmstat.com/eg.js', headers=headers)
for key, value in self.session.cookies.items():
self.cookies[key] = value
# 获取数据
def get_data(self, page):
self.data['page'] = "" if page == 1 else page
self.data['ac'] = "" if page == 1 else self.cookies.get('cna')
self.timestamp = str(time.time()).replace('.', '')[:13]
self.params['t'] = self.timestamp
self.params['sign'] = self.h(self.token + "&" + self.timestamp + "&" + '12574478' + "&" + json.dumps(self.data,ensure_ascii=False).replace(' ',''))
self.params['data'] = json.dumps(self.data, ensure_ascii=False).replace(' ', '')
self.headers['cookie'] = self.to_cookie()
response = self.session.get('https://h5api.m.taobao.com' + '/h5/mtop.alimama.union.sem.landing.pc.items/1.0/?' + parse.urlencode(self.params), headers=self.headers)
json_data = json.loads(response.text.replace('mtopjsonp1(','').replace(')',''))
print(json_data)
if __name__ == '__main__':
TaoBao('男装') # 搜索关键词
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文章浏览阅读899次。https://www.toutiao.com/a6713171323893318151/作者 | 黄小邪/言有三编辑 | 黄小邪/言有三图像预处理算法的好坏直接关系到后续图像处理的效果,如图像分割、目标识别、边缘提取等,为了获取高质量的数字图像,很多时候都需要对图像进行降噪处理,尽可能的保持原始信息完整性(即主要特征)的同时,又能够去除信号中无用的信息。并且,降噪还引出了一..._噪声很大的图片可以降噪吗
文章浏览阅读152次。目录谨慎地覆盖cloneCloneable接口并没有包含任何方法,那么它到底有什么作用呢?Object类中的clone()方法如何重写好一个clone()方法1.对于数组类型我可以采用clone()方法的递归2.如果对象是非数组,建议提供拷贝构造器(copy constructor)或者拷贝工厂(copy factory)3.如果为线程安全的类重写clone()方法4.如果为需要被继承的类重写clone()方法总结谨慎地覆盖cloneCloneable接口地目的是作为对象的一个mixin接口(详见第20_为继承设计类有两种选择,但无论选择其中的
文章浏览阅读958次,点赞21次,收藏24次。今天学长向大家分享一个毕业设计项目基于协同过滤的电影推荐系统项目运行效果:项目获取:https://gitee.com/assistant-a/project-sharing21世纪是信息化时代,随着信息技术和网络技术的发展,信息化已经渗透到人们日常生活的各个方面,人们可以随时随地浏览到海量信息,但是这些大量信息千差万别,需要费事费力的筛选、甄别自己喜欢或者感兴趣的数据。对网络电影服务来说,需要用到优秀的协同过滤推荐功能去辅助整个系统。系统基于Python技术,使用UML建模,采用Django框架组合进行设
文章浏览阅读614次。10G SFP+光模块被广泛应用于10G以太网中,在下一代移动网络、固定接入网、城域网、以及数据中心等领域非常常见。下面易天光通信(ETU-LINK)就为大家一一盘点下10G SFP+光模块都有哪些吧。一、10G SFP+双纤光模块10G SFP+双纤光模块是一种常规的光模块,有两个LC光纤接口,传输距离最远可达100公里,常用的10G SFP+双纤光模块有10G SFP+ SR、10G SFP+ LR,其中10G SFP+ SR的传输距离为300米,10G SFP+ LR的传输距离为10公里。_10g sfp+
文章浏览阅读239次。该项目含有源码、文档、程序、数据库、配套开发软件、软件安装教程。欢迎交流项目运行环境配置:项目技术:Express框架 + Node.js+ Vue 等等组成,B/S模式 +Vscode管理+前后端分离等等。环境需要1.运行环境:最好是Nodejs最新版,我们在这个版本上开发的。其他版本理论上也可以。2.开发环境:Vscode或HbuilderX都可以。推荐HbuilderX;3.mysql环境:建议是用5.7版本均可4.硬件环境:windows 7/8/10 1G内存以上;_基于vue美食网站源码
文章浏览阅读62次。oldwain随便写@hexun链接:http://oldwain.blog.hexun.com/ ...
文章浏览阅读843次,点赞16次,收藏22次。用这个工具扫描其它网站时,要注意法律问题,同时也比较慢,所以我们以之前写的登录页面为例子扫描。_sqlmap拖库
文章浏览阅读1.5w次,点赞5次,收藏38次。Origin也能玩转图片的拼接组合排版谭编(华南师范大学学报编辑部,广州 510631)通常,我们利用Origin软件能非常快捷地绘制出一张单独的绘图。但是,我们在论文的撰写过程中,经常需要将多种科学实验图片(电镜图、示意图、曲线图等)组合在一张图片中。大多数人都是采用PPT、Adobe Illustrator、CorelDraw等软件对多种不同类型的图进行拼接的。那么,利用Origin软件能否实..._origin怎么把三个图做到一张图上
文章浏览阅读4.2k次,点赞4次,收藏51次。51单片机智能电风扇控制系统仿真设计( proteus仿真+程序+原理图+报告+讲解视频)仿真图proteus7.8及以上 程序编译器:keil 4/keil 5 编程语言:C语言 设计编号:S0042。_电风扇模拟控制系统设计