python 爬虫 一键爬取 淘宝天猫宝贝页面主图颜色图和详情图

import requests

import re,sys,os
import json
import threading
import pprint

class spider:
def __init__(self,sid,name):

self.id = sid
self.headers = { "Accept":"text/html,application/xhtml+xml,application/xml;",
"Accept-Encoding":"gzip",
"Accept-Language":"zh-CN,zh;q=0.8",
"Referer":"http://www.example.com/",
"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36"
}

self.name=name

def openurl(self,url):

self.request = requests.get(url,headers = self.headers)
if self.request.ok:
return self.request.text

def matchs(self):

tmall_exp = r"Setup\(([\s\S]+?)\);"### 匹配商品数据的正则
detail= r"src=\"(https://img\S+?[jpgifn]+?)\""  ###匹配 商品详情图的正则
html = self.openurl("https://detail.tmall.com/item.htm?id=%s"%self.id)
data = re.findall(tmall_exp,html)
data = json.loads(data[0])
main_img = data['propertyPics'] ## 这里包括了主图和颜色图的地址
color_data =data['valItemInfo'] ['skuList']  ### 这里获得商品的颜色信息列表   包括颜色编码  颜色名称,商品skuID
detail_html = self.openurl("http:"+data['api']["httpsDescUrl"])
detail_image = re.findall(detail,detail_html)
self.newdata={"MAIN":main_img['default'],"DETAIL":detail_image,"id":self.id,}

psvs = []
self.newdata['COLOR']=[]

for v in range(len(color_data)):
if ";"in color_data[v]["pvs"]:
psv = color_data[v]['pvs'][color_data[v]['pvs'].find(";")+1:]
else:
psv = color_data[v]['pvs']
if psv in psvs:

continue
psvs.append(psv)

self.newdata['COLOR'].append({color_data[v]["names"]:main_img[";"+psv+";"]})

pprint.pprint(self.newdata)

return self.newdata

def download(self):
if len(self.newdata)>0:
for x in range(len(self.newdata['MAIN'])):

threading.Thread(target=self.download_main,args=(self.newdata['MAIN'][x],x)).start()

for x in self.newdata['COLOR']:

threading.Thread(target=self.download_color,args=(x,)).start()
for x in range(len(self.newdata['DETAIL'])):

threading.Thread(target=self.download_detail,args=(self.newdata['DETAIL'][x],x)).start()
return

def download_main(self,url,index):
try:
img = requests.get("http:"+url,stream=True,headers = self.headers,timeout=10)

except:
print(sys.exc_info())
return
if img.ok:
if not os.path.exists(self.name+"/main"):
try:
os.makedirs(self.name+"/main")
except:
pass
imgs = open(self.name+"/main/%s.jpg"%index,"wb")
imgs.write(img.content)
imgs.close()

def download_color(self,url):

try:
img = requests.get("http:"+url[list(url.keys())[0]][0],stream=True,headers = self.headers,timeout=10)

except:
print(sys.exc_info())
return
if img.ok:
if not os.path.ex
a27f
ists(self.name+"/color"):
try:
os.makedirs(self.name+"/color")
except:
pass
if "/"in list(url.keys())[0]:
color = list(url.keys())[0].replace("/","_")
elif "\\" in list(url.keys())[0]:
color = list(url.keys())[0].replace("\\","_")
else:
color = list(url.keys())[0]
imgs = open(self.name+"/color/%s.jpg"%color,"wb")
imgs.write(img.content)
imgs.close()

def download_detail(self,url,index):

try:
img = requests.get(url,stream=True,headers = self.headers,timeout=10)

except:
print(sys.exc_info())
return
if img.ok:
if not os.path.exists(self.name+"/detail"):
try:
os.makedirs(self.name+"/detail")
except:
pass

imgs = open(self.name+"/detail/%s.jpg"%index,"wb")
imgs.write(img.content)

imgs.close()

if __name__ =="__main__":

sid = 528766269341 ## 这里输入天猫宝贝ID

taobao = spider(sid,"下载图片/T")

taobao.matchs()

taobao.download()