1.淘宝商品信息定向爬虫
目标:获取淘宝搜索页面信息,提取其中的商品名称和价格
理解:淘宝的搜索接口
翻页的处理
技术路线:requests+re
淘宝不允许任何形式的爬虫!!!请不要不加限制的爬取!
1.提交商品搜索请求,循环爬取页面
2.对于每个页面,提取商品名称和价格信息
3.将信息输出到屏幕上
import requests import re def getHTMLText(url): kv = {"cookie":"t=5c749e8d453e7e3664735746f5eb5de8; cna=BrXNFDenbXUCAXggNKX9H1bo; thw=cn; tg=0; enc=5LMRHD8305w3oo8X0agYVFUDa7Ox%2F4RBf34oCWap48nRHy%2B%2B1RZCWZJ7ebn%2Fpy7vRNIL8xpS%2Ba0oNFXG5nSu8w%3D%3D; hng=CN%7Czh-CN%7CCNY%7C156; cookie2=10dbf1309bd9a2d5bc9cabe562965aee; _tb_token_=ee67e1a3ee0e5; alitrackid=www.taobao.com; swfstore=308730; v=0; unb=2448224718; sg=%E6%BB%A18d; _l_g_=Ug%3D%3D; skt=d53506c42f2db259; cookie1=BxUHGXuG%2B5Y4Iw7vZCvjLJ0zDvFL2Xy3mjxT%2FRPtFeA%3D; csg=4246b77f; uc3=vt3=F8dByEzfiHo1%2FUIk8VY%3D&id2=UUwU0bQkq1tYDQ%3D%3D&nk2=CN5OZuI3Xv2%2BlbVX&lg2=W5iHLLyFOGW7aA%3D%3D; existShop=MTU1MDU2MTUyMQ%3D%3D; tracknick=king%5Cu4E36%5Cu5C0F%5Cu4E30%5Cu6EE1; lgc=king%5Cu4E36%5Cu5C0F%5Cu4E30%5Cu6EE1; _cc_=VFC%2FuZ9ajQ%3D%3D; dnk=king%5Cu4E36%5Cu5C0F%5Cu4E30%5Cu6EE1; _nk_=king%5Cu4E36%5Cu5C0F%5Cu4E30%5Cu6EE1; cookie17=UUwU0bQkq1tYDQ%3D%3D; lastalitrackid=login.taobao.com; mt=ci=5_1; x=e%3D1%26p%3D*%26s%3D0%26c%3D0%26f%3D0%26g%3D0%26t%3D0%26__ll%3D-1%26_ato%3D0; uc1=cookie14=UoTZ5OXqJxXKdA%3D%3D&lng=zh_CN&cookie16=W5iHLLyFPlMGbLDwA%2BdvAGZqLg%3D%3D&existShop=false&cookie21=UIHiLt3xThH8t7YQouiW&tag=8&cookie15=UIHiLt3xD8xYTw%3D%3D&pas=0; JSESSIONID=F99B5E66516B99D5E7C9F431E402713F; l=bBNU0zKPvJ9oGfuLBOCNZuI8LN_OGIRYjuPRwCfMi_5B46JhzLQOllv3_FJ6Vj5RsK8B4z6vzNp9-etki; isg=BDg4VI5GkPAaMvx83RJGSPCNCeYKCZ0m9uCVOHKp6XNmjdh3GrU6uo2vQcWY5lQD; whl=-1%260%260%261550562673185", "user-agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36"} try: r = requests.get(url,headers = kv,timeout = 30) r.raise_for_status() r.encoding = r.apparent_encoding return r.text except: return "" def parsePage(ilt,html): try: plt = re.findall(r'"view_price":"[d.]*"',html) tlt = re.findall(r'"raw_title":".*?"',html) for i in range(len(plt)): price = eval(plt[i].split(':')[1]) title = eval(tlt[i].split(':')[1]) ilt.append([price,title]) except: print("") def printGoodsList(ilt): tplt = "{:4} {:8} {:16}" print(tplt.format("序号","价格","商品名称")) count = 0 for g in ilt: count = count +1 print(tplt.format(count,g[0],g[1])) def main(): goods = '书包' depth = 5 start_url = 'https://s.taobao.com/search?q='+goods infoList = [] for i in range(depth): try: url = start_url + '&s='+str(44*i) html = getHTMLText(url) parsePage(infoList,html) except: continue printGoodsList(infoList) main()
注意:KV的加入是爬虫成功的关键!