[置顶] python3.x爬虫实战：某网站定向信息抓取

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import requests
import re
from bs4 import BeautifulSoup
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 pymongo
import time
from pymongo.collection import ReturnDocument
b=webdriver.Chrome()
wait=WebDriverWait(b,10)
KEY_WORD="建筑"
URL="https://www.XXXXXXXXX.com"
MONGO_URL='localhost'
MONGO_DB='albbs'
MONGO_TABLE='supplier'
client=pymongo.MongoClient(MONGO_URL)
db=client[MONGO_DB]

def search():
    try:
        b.get(URL)
        ul=b.find_element_by_css_selector("#masthead > div.ali-search.fd-right > div.searchtypeContainer > ul")
        ul.click()
        b.find_element(By.XPATH,"//*[@id='masthead']/div[2]/div[1]/ul/li[2]").click()
        input = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#alisearch-keywords")))
        submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#alisearch-submit")))
        input.send_keys(KEY_WORD)
        submit.click()
        total= wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,"#sw_mod_pagination_form > div > span")))
        get_url()
        time.sleep(2)
        return total.text
    except TimeoutException:
        return search()
def next_page(page_number):
    try:
        input = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#jumpto")))
        submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#jump-sub")))
        input.clear()
        input.send_keys(page_number)
        submit.click()
        time.sleep(5)
        wait.until(EC.text_to_be_present_in_element((By.CSS_SELECTOR,"#sw_mod_pagination_content > div > span.page-cur"),str(page_number)))
        get_url()
        time.sleep(8)
    except TimeoutException:
        next_page(page_number)
def get_url():
    wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,"#sw_mod_searchlist")))

    html=b.page_source
    soup = BeautifulSoup(html,'html.parser')
    a=soup.find_all("a",class_="list-item-title-text")
    for i in a:
        try:
            get_information_url(i.attrs['href'])

        except:
            continue
def save_to_mongo(results):
    try:
        if db[MONGO_TABLE].insert(results):
            print('存储成功')
    except:
        print('存储异常')


def get_information_url(url):
    try:
        b.get(url)
        contactinfo=b.find_element_by_link_text("联系方式")
        contactinfo.click()
        time.sleep(1)
        wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,"#site_content > div.grid-main > div > div > div > div.m-content")))
        html=b.page_source
        soup = BeautifulSoup(html,'html.parser')
        div=soup.find("h4")
        company_name=div.text
        contactinfo_name=soup.find("a",class_="membername").text
        MobilePhone=soup.find("dl",class_="m-mobilephone").text
        MobilePhone=int(re.compile('(\d+)').search(MobilePhone).group())
        addr=soup.find("dd",class_="address").text
        print(company_name)
        print(contactinfo_name)
        print(MobilePhone)
        print(addr)
        contactinfos={"公司名":company_name,"联系人":contactinfo_name,"手机号码":MobilePhone,"地址":addr}
        save_to_mongo(contactinfos)
        time.sleep(8)
    except TimeoutException:
        get_information_url(url)

def main():
    total=search()
    total=int(re.compile('(\d+)').search(total).group(1))
    print(total)
    for i in range(2,total +1):
        next_page(i)

if __name__ == '__main__':
    main()

自己的学习笔记。