10. Selenium爬取淘宝商品
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2023-12-01
① 案例要求
- 使用Selenium爬取淘宝商品,指定关键字和指定页码信息来进行爬取
② 案例分析:
③ 具体代码实现
'''通过关键字爬取淘宝网站的信息数据'''
from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.wait import WebDriverWait
from pyquery import PyQuery as pq
from urllib.parse import quote
KEYWORD = "ipad"
MAX_PAGE = 10
# browser = webdriver.Chrome()
# browser = webdriver.PhantomJS()
#创建谷歌浏览器对象,启用Chrome的Headless无界面模式
chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument('--headless')
browser = webdriver.Chrome(chrome_options=chrome_options)
#显式等待:
wait = WebDriverWait(browser, 10)
def index_page(page):
'''抓取索引页 :param page: 页码'''
print('正在爬取第', page, '页')
try:
url = 'https://s.taobao.com/search?q=' + quote(KEYWORD)
browser.get(url)
if page > 1:
input = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager div.form > input')))
submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, '#mainsrp-pager div.form > span.btn.J_Submit')))
input.clear()
input.send_keys(page)
submit.click()
#等待条件:显示当前页号,显式商品
wait.until(EC.text_to_be_present_in_element((By.CSS_SELECTOR, '#mainsrp-pager li.item.active > span'), str(page)))
wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '.m-itemlist .items .item')))
get_products()
except TimeoutException:
index_page(page)
def get_products():
'''提取商品数据'''
html = browser.page_source
doc = pq(html)
items = doc('#mainsrp-itemlist .items .item').items()
for item in items:
product = {
'image': item.find('.pic .img').attr('data-src'),
'price': item.find('.price').text(),
'deal': item.find('.deal-cnt').text(),
'title': item.find('.title').text(),
'shop': item.find('.shop').text(),
'location': item.find('.location').text()
}
print(product)
save_data(product)
def save_data(result):
'''保存数据'''
pass
def main():
'''遍历每一页'''
for i in range(1, MAX_PAGE + 1):
index_page(i)
browser.close()
# 主程序入口
if __name__ == '__main__':
main()