配置文件
MONGO_URL = 'localhost'
MONGO_DB = 'taobao_food'
MONGO_TABLE = 'products'
代码实现
from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import re
from pyquery import PyQuery as pq
from config import *
import pymongo
client = pymongo.MongoClient(MONGO_URL)
db = client[MONGO_DB]
#chromedriver执行路径
driver = webdriver.Chrome(executable_path="C:\chromedriver.exe")
#selenium官方文档
wait = WebDriverWait(driver, 10)
def search():
try:
driver.get("https://world.taobao.com/")
input = wait.until(
#等待页面加载完成，css选择器
EC.presence_of_element_located((By.CSS_SELECTOR, '#mq'))
)
submit = wait.until(
#等待按钮可点击
EC.element_to_be_clickable((By.CSS_SELECTOR, '#J_PopSearch > div.sb-search > '
'div > form > input[type="submit"]'
':nth-child(2)'))
)
#input框输入搜索关键字
input.send_keys("美食")
#按钮点击
submit.click()
total_page_num = wait.until(
EC.presence_of_element_located((By.CSS_SELECTOR,'#mainsrp-pager > div > '
'div > div > div.total'))
)
#获取第一页商品信息
get_products()
#返回总页数
return total_page_num.text
except TimeoutException:
return search()
def next_page(page_num):
try:
input = wait.until(
EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager > div > div > '
'div > div.form > input'))
)
#清空input框
input.clear()
#输入跳转到的页码
input.send_keys(page_num)
submit = wait.until(
EC.element_to_be_clickable((By.CSS_SELECTOR, '#mainsrp-pager > div > '
'div > div > div.form > span.btn.J_Submit'))
)
#点击确定按钮跳转
submit.click()
#确定是跳转到了所要跳转的页码
wait.until(EC.text_to_be_present_in_element((By.CSS_SELECTOR,'#mainsrp-pager>div>'
'div>div>ul>li.item.active>'
'span'),str(page_num)))
#获取从第二页开始的所有商品信息
get_products()
except TimeoutException:
#如果超时重新调用此函数
next_page(page_num)
def get_products():
wait.until(
EC.presence_of_element_located((By.CSS_SELECTOR,'#mainsrp-itemlist .items .item'))
)
#获取完整html
html = driver.page_source
#用pyquery解析
doc = pq(html)
items = doc('#mainsrp-itemlist .items .item').items()
for item in items:
product = {
'商品名称':item.find('.title').text(),
'图片地址':item.find('.pic .img').attr('src'),
'商品价格':item.find('.price').text().strip().replace("\n",""),
'付款人数':item.find('.deal-cnt').text()[:-3],
'商品地址':item.find('.pic .pic-link').attr('href'),
'发货地':item.find('.location').text()
}
#保存
save2mongo(product)
def save2mongo(result):
"""保存到MongoDB"""
try:
if db[MONGO_TABLE].insert(result):
print("保存成功",result)
except Exception:
print("出错",result)
def main():
total_page_num = search()
#获取的信息为“共 ？？ 页”，只留数字
total_page_num = int(re.compile('(\d+)').search(total_page_num).group(1))
#从第二页到最后一页获取
for i in range(2,total_page_num+1):
next_page(i)
if __name__ == "__main__":
main()
