spider.py
import re from pydoc import doc 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 from pyquery import PyQuery as pq from config import * import pymongo client = pymongo.MongoClient(MONGO_URL) db = client[MONGO_DB] browser = webdriver.Chrome() wait = WebDriverWait(browser,10) def search(): try: browser.get('https://www.taobao.com') input = wait.until( EC.presence_of_element_located((By.CSS_SELECTOR,'#q')) ) submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR,'#J_TSearchForm > div.search-button > button'))) input.send_keys('美食') submit.click() total = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.total'))) get_products() return total.text except TimeoutException: return search() def next_page(page_number): try: input = wait.until( EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.form > input')) ) submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.form > span.btn.J_Submit'))) input.clear() input.send_keys(page_number) submit.click() wait.until(EC.text_to_be_present_in_element((By.CSS_SELECTOR,'#mainsrp-pager > div > div > div > ul > ' 'li.item.active > span'),str(page_number))) get_products() except TimeoutException: next_page(page_number) def get_products(): 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: product = { '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(product) save_to_mongo(product) def save_to_mongo(result): try: if db[MONGO_TABLE].insert(result): print('存储到MONGODB成功',result) except Exception: print('存储到MONGODB失败',result) def main(): total = search() total = int(re.compile('(\d+)').search(total).group(1)) for i in range(2,total + 1): next_page(i) browser.close() if __name__ == '__main__': main()config.py
MONGO_URL = 'localhost' MONGO_DB = 'taobao' MONGO_TABLE = 'product'