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Python进阶之使用selenium爬取淘宝商品信息功能示例

更新时间:2020-07-30 14:06:01 作者:startmvc
本文实例讲述了Python进阶之使用selenium爬取淘宝商品信息功能。分享给大家供大家参考,具

本文实例讲述了Python进阶之使用selenium爬取淘宝商品信息功能。分享给大家供大家参考,具体如下:


# encoding=utf-8
__author__ = 'Jonny'
__location__ = '西安'
__date__ = '2018-05-14'
'''
需要的基本开发库文件:
requests,pymongo,pyquery,selenium
开发流程:
 搜索关键字:利用selenium驱动浏览器搜索关键字,得到查询后的商品列表
 分析页码并翻页:得到商品页码数,模拟翻页,得到后续页面的商品列表
 分析提取商品内容:利用PyQuery分析页面源代码,解析获得商品列表信息
 存储到MongDB中:将商品的信息列表存储到数据库MongoDB。
'''
import requests
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import TimeoutException
from pyquery import PyQuery as pq
import pymongo
import re
import time
browser = webdriver.Chrome()
wait = WebDriverWait(browser,10)
client = pymongo.MongoClient('localhost',27017)
mongo = client['taobao']
def searcher():
 url = 'https://www.taobao.com/'
 browser.get(url=url)
 try:
 #判断页面加载是够成功,设置等待时间
 #判断位置1:搜索输入框是否加载完成
 input_kw = wait.until(
 EC.presence_of_element_located((By.CSS_SELECTOR, '#q'))
 )
 #判断位置2:搜索输入框对应的搜索按键是否加载完成
 submit = wait.until(EC.element_to_be_clickable(
 (By.CSS_SELECTOR,'#J_TSearchForm > div.search-button > button'))
 )
 input_kw.send_keys('男装')
 submit.click()
 #等待页面加载完成,便于准确判断网页的总页数
 page_counts = wait.until(
 EC.presence_of_element_located(
 (By.CSS_SELECTOR,'#mainsrp-pager > div > div > div > div.total'))
 )
 parse_page()
 return page_counts.text
 except TimeoutException as e:
 print(e.args)
 return searcher()
#实现翻页
def next_page(page_number):
 try:
 # 判断页面加载是够成功,设置等待时间
 # 判断位置1:页面跳转输入页是否加载完成
 input_page = wait.until(
 EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.form > input'))
 )
 # 判断位置2:确认按键是否加载完成
 submit = wait.until(EC.element_to_be_clickable(
 (By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.form > span.btn.J_Submit'))
 )
 input_page.send_keys(page_number)
 submit.click()
 #判断翻页是否成功
 wait.until(EC.text_to_be_present_in_element(
 (By.CSS_SELECTOR,'#mainsrp-pager > div > div > div > ul > li.item.active'),str(page_number))
 )
 parse_page()
 except TimeoutException as e:
 print(e.args)
 next_page(page_number)
#对页面进行数据处理
def parse_page():
 # wait.until(EC.presence_of_element_located(By.CSS_SELECTOR,'#mainsrp-itemlist > div > div'))
 wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-itemlist .items .item')))
 html = browser.page_source
 doc = pq(html)
 items = doc('#mainsrp-itemlist .items .item').items()
 for item in items:
 goods = {
 'image':item.find('.pic .img').attr('src'),
 'price':item.find('.price').text(),
 'deal':item.find('.deal-cnt').text()[:-3],
 'title':item.find('.title').text(),
 'shop':item.find('.shop').text(),
 'location':item.find('.location').text()
 }
 print(goods)
 data_storage(goods)
#将数据存入数据库
def data_storage(goods):
 try:
 if mongo['mongo_sheet'].insert(goods):
 print('Successfully storage!')
 except Exception as e:
 print('failedly storage!',goods)
def main():
 text = searcher()
 print(text)
 #获取总页数
 pages = int(re.compile('(\d+)').search(text).group(0))
 print(pages)
 for i in range(2,pages+1):
 next_page(i)
 browser.close()
if __name__ == '__main__':
 main()

Python selenium 爬取 淘宝商品信息