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 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(ps<strong style="color:transparent">来源gaodaima#com搞(代@码网</strong>v) 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-600"%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-600"%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-600"%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()