python 爬虫一键爬取 淘宝天猫宝贝页面主图颜色图和详情图的教程

import requestsimport re,sys,osimport jsonimport threadingimport pprintclass 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.exists(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()