怎么利用爬虫技术抓取淘宝搜索页面的产品信息

JavaScript021

怎么利用爬虫技术抓取淘宝搜索页面的产品信息,第1张

可以通过requests库re库进行淘宝商品爬虫爬取

import requests

import re

def getHTMLText(url):

try:

r= requests.get(url,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("F")

def printGoodsList(ilt):

tplt = "{:4}\t{:8}\t{: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 = 2

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()

这段代码在过去是可以爬取淘宝商品信息，但是因为淘宝的反扒技术升级，便不能让你大摇大摆地进出自如了。

此外也可以借助采集实现采集

// ==UserScript==

// @name         JD

// @namespace    http://tampermonkey.net/

// @version      0.1

// @description  try to take over the world!

// @author       You

// @match        https://item.jd.com/*

// @grant        none

// ==/UserScript==

/* jshint -W097 */

'use strict'

// Your code here...

var divObj=document.createElement("input") 

divObj.type="button"

divObj.value='获取抓取内容' 

divObj.style.marginTop="20px"

divObj.style.marginBottom="20px"

divObj.style.marginLeft="50px"

var first=document.body.firstChild

document.body.insertBefore(divObj,first)

var result={}

divObj.onclick=function(){

    //获取价格

    if(document.getElementById("jd-price")){

        var priceDiv=document.getElementById("jd-price")

        var price = priceDiv.innerText

        price = price.substr(1)

    }else if(document.getElementById("price")){

        var pricePri=document.getElementById("price")

        var priceDiv=pricePri.firstElementChild

        var price = priceDiv.innerText

    }else if(document.getElementsByClassName("price")[0]){

        var priceClass=document.getElementsByClassName("price")

        var priceDiv=priceClass[0]

        var price = priceDiv.innerText

    }

    

    result.price=price

}