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
实例如下所示:
importrequests importre,sys,os importjson importthreading importpprint classspider: 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(WindowsNT6.1;WOW64)AppleWebKit/537.36(KHTML,likeGecko)Chrome/42.0.2311.90Safari/537.36" } self.name=name defopenurl(self,url): self.request=requests.get(url,headers=self.headers) ifself.request.ok: returnself.request.text defmatchs(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']=[] forvinrange(len(color_data)): if";"incolor_data[v]["pvs"]: psv=color_data[v]['pvs'][color_data[v]['pvs'].find(";")+1:] else: psv=color_data[v]['pvs'] ifpsvinpsvs: continue psvs.append(psv) self.newdata['COLOR'].append({color_data[v]["names"]:main_img[";"+psv+";"]}) pprint.pprint(self.newdata) returnself.newdata defdownload(self): iflen(self.newdata)>0: forxinrange(len(self.newdata['MAIN'])): threading.Thread(target=self.download_main,args=(self.newdata['MAIN'][x],x)).start() forxinself.newdata['COLOR']: threading.Thread(target=self.download_color,args=(x,)).start() forxinrange(len(self.newdata['DETAIL'])): threading.Thread(target=self.download_detail,args=(self.newdata['DETAIL'][x],x)).start() return defdownload_main(self,url,index): try: img=requests.get("http:"+url,stream=True,headers=self.headers,timeout=10) except: print(sys.exc_info()) return ifimg.ok: ifnotos.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() defdownload_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 ifimg.ok: ifnotos.path.exists(self.name+"/color"): try: os.makedirs(self.name+"/color") except: pass if"/"inlist(url.keys())[0]: color=list(url.keys())[0].replace("/","_") elif"\\"inlist(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() defdownload_detail(self,url,index): try: img=requests.get(url,stream=True,headers=self.headers,timeout=10) except: print(sys.exc_info()) return ifimg.ok: ifnotos.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()
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