如何通过 Python 抓取动态网页 [英] How to scrape dynamic webpages by Python

问题描述

从下面的网页抓取二手车数据.
http://www.goo-net.com/php/search/summary.php?price_range=&pref_c=08,09,10,11,12,13,14&easysearch_flg=1

Scrape the webpage below for used car data.
http://www.goo-net.com/php/search/summary.php?price_range=&pref_c=08,09,10,11,12,13,14&easysearch_flg=1

抓取整个页面.在上面的 url 中，只显示了前 30 个项目.这些可以被我写的下面的代码刮掉.指向其他页面的链接显示为 1 2 3... 但链接地址似乎是在 Javascript 中.我在谷歌上搜索了有用的信息，但找不到任何信息.

To scrape the entire pages. In the url above, only first 30 items are shown. Those could be scraped by the code below which I wrote. Links to other pages are displayed like 1 2 3... but the link addresses seems to be in Javascript. I googled for useful information but couldn't find any.

from bs4 import BeautifulSoup
import urllib.request

html = urllib.request.urlopen("http://www.goo-net.com/php/search/summary.php?price_range=&pref_c=08,09,10,11,12,13,14&easysearch_flg=1")

soup = BeautifulSoup(html, "lxml")
total_cars = soup.find(class_="change change_01").find('em').string
tmp = soup.find(class_="change change_01").find_all('span')
car_start, car_end = tmp[0].string, tmp[1].string

# get urls to car detail pages
car_urls = []
heading_inners = soup.find_all(class_="heading_inner")
for heading_inner in heading_inners:
    href = heading_inner.find('h4').find('a').get('href')
    car_urls.append('http://www.goo-net.com' + href)

for url in car_urls:
    html = urllib.request.urlopen(url)
    soup = BeautifulSoup(html, "lxml")
    #title
    print(soup.find(class_='hdBlockTop').find('p', class_='tit').string)
    #price of car itself
    print(soup.find(class_='price1').string)
    #price of car including tax
    print(soup.find(class_='price2').string)

    tds = soup.find(class_='subData').find_all('td')
    # year
    print(tds[0].string)
    # distance
    print(tds[1].string)
    # displacement
    print(tds[2].string)
    # inspection
    print(tds[3].string)

[我想知道的]

如何抓取整个页面.我更喜欢使用 BeautifulSoup4 (Python).但如果这不是合适的工具，请告诉我其他工具.

[What I'd like to know]

How to scrape the entire pages. I prefer to use BeautifulSoup4 (Python). But if that is not the appropriate tool, please show me other ones.

• Windows 8.1
• Python 3.5
• PyDev (Eclipse)
• BeautifulSoup4

任何指导将不胜感激.谢谢.

Any guidance would be appreciated. Thank you.

推荐答案

你可以使用 selenium像下面的例子:

you can use selenium like below sample:

from selenium import webdriver
driver = webdriver.Firefox()
driver.get('http://example.com')
element = driver.find_element_by_class_name("yourClassName") #or find by text or etc
element.click() 

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