一款使用Python编写的网页资源抓取器，能自动下载指定网站的所有资源文件，包括HTML源码、图片、JS脚本及CSS样式文件，并按原路径结构保存。
此程序是作者原创，转载请注明出处(csdn:pythoning183)!!!!!!!
版本号：WebFileSpider4.0
使用前，点个赞谢谢！
此下载器可以下载任意网页的源码和所有js、css、img文件,包括隐藏网页和js和css里隐藏的文件，实现了几乎不遗漏的模仿建站,模仿原路径创建文件夹功能
工具和需要的库：
python3.6
# -*-coding=utf-8-*- import os import re import time from urllib.parse import urljoin from selenium import webdriver import requests from bs4 import BeautifulSoup from url_decode import urldecode
代码正文
class GovSpider:
def __init__(self):
self.site_url = 'https://www.baidu.com/'
self.spath = re.sub('.*//', '', self.site_url)
sindex = self.spath.find('/')
if sindex != -1:
self.spath = self.spath[:sindex]
self.base_path = '~/Desktop/gov_spider/' + self.spath
print('base:', self.base_path)
def start_page(self):
req = webdriver.Chrome()
req.get(self.site_url)
time.sleep(3)
html1 = req.page_source
soup = BeautifulSoup(html1, 'lxml')
iframes = soup.findAll('iframe')
self.gs_runner(urldecode(html1))
if iframes:
print('有隐藏页面:', iframes)
for ifr_url in iframes:
if 'https:' not in ifr_url or 'http' not in ifr_url:
ifr_url = urljoin(self.site_url, ifr_url.get('src'))
print('进入隐藏页面：', ifr_url, '，并开启隐藏页面抓取img、css、js的程序........')
try:
html2 = requests.get(ifr_url).text
self.gs_runner(urldecode(html2))
except Exception as e:
print('隐藏页面的地址格式不正确,无法访问：', ifr_url)
# 程序运行完毕，自动关闭浏览器
req.quit()
def download_imgs(self, html, css_link):
# 多筛选 防止无格式或不在src下的图片漏下
liResults = re.findall('(".*?")|(\(.*?\))', html)
# print(liResults)
if liResults:
print('>>>>>>>>>>>>>>>>>>>>>>>>>正在下载img文件>>>>>>>>>>>>>>>>>>>>>>>>>')
for liResult in liResults:
for img_li in liResult:
if img_li and ('{' not in img_li and '</' not in img_li) \
and (re.findall('(\.jpg)|(jpg\?)|(\.ico)|(ico\?)|(\.png)|(png\?)|'
'(\.svg)|(svg\?)|(\.gif)|(gif\?)|(\.webp)|(webp\?)|(data:image)',img_li)):
if re.findall('(\(.*?\))',img_li) and '\/' not in img_li:
img_urls=[re.sub('(.*\()|(\).*)|[";]|(")', '', img_li).replace("'",'')]
else:
img_urls = [re.sub('[";]', '', img_li).replace('\/\/', '//').replace('\/', '//').replace("'",'')]
if not re.findall('(base.*?,)',img_urls[0]):
if ',' in img_urls[0]:
print('检测到有多路径img_url，正在深入抓取......')
img_urls = img_urls[0].split(',')
for img_url in img_urls:
try:
if 'http:' not in img_url or 'https:' not in img_url:
img_url = urljoin(self.site_url, img_url)
img_name = re.sub('(.*//)', '', img_url)
f_index = img_name.find('/')
l_index = img_name.rfind('/')
dir_path = self.spath + img_name[f_index:l_index]
if not os.path.exists(dir_path):
os.system('mkdir -p %s' % dir_path)
img_name = re.sub('(.*/)', '', img_url)
print('正在下载img文件：', img_url)
img = requests.get(img_url).content
with open('./%s' % (dir_path + '/' + img_name), 'wb') as f:
f.write(img)
except Exception as e:
print(img_url, e, '\r\nthis is uvaild url')
if css_link:
print('Enter_css---------开始进入css文件中发起深入抓取图片---------Enter_css')
self.enter_css_img(css_link)
print('===========================img文件下载完毕=============================')
def enter_css_img(self, css_links):
print('>>>>>>>>>>>>>>>>>>>>>>>>>正在下载css文件中的img>>>>>>>>>>>>>>>>>>>>>>>>>')
for css_link in css_links:
print('当前正深入的css_link是',css_link)
css_text = requests.get(css_link).text
# 多筛选 防止无格式或不在src下的图片漏下
liResult = re.findall('(\(.*?\))', css_text)
if liResult:
for img_li in liResult:
if img_li and ('{' not in img_li and '</' not in img_li) \
and (re.findall('(\.jpg)|(jpg\?)|(\.ico)|(ico\?)|(\.png)|(png\?)|'
'(\.svg)|(svg\?)|(\.gif)|(gif\?)|(\.webp)|(webp\?)|(data:image)', img_li)):
if '\/' not in img_li:
img_urls = [re.sub('[";)]|(.*\()|(")', '', img_li).replace("'",'')]
else:
img_urls = [re.sub('[";)]|(.*\()|(")', '', img_li).replace('\/\/', '//').replace('\/', '//').replace("'",'')]
if not re.findall('(base.*?,)',img_urls[0]):
if ',' in img_urls[0]:
print('检测到有css代码中有多路径img_url，正在深入抓取......')
img_urls = img_urls[0].split(',')
for img_url in img_urls:
try:
if 'http:' not in img_url or 'https:' not in img_url:
img_url = urljoin(self.site_url,img_url)
img_name = re.sub('(.*//)', '', img_url)
l_index = img_name.rfind('/')
dir_path = self.spath+'/'+img_name[:l_index]
if not os.path.exists(dir_path):
os.system('mkdir -p %s'%dir_path)
img_name = re.sub('(.*/)', '', img_url)
print('正在下载img文件：',img_url)
img = requests.get(img_url).content
with open('./%s' % (dir_path + '/' + img_name), 'wb') as f:
f.write(img)
except Exception as e:
print(img_url,e,'\r\nthis is uvaild url')
def download_js(self, html):
liResult = re.findall('(".*?")', html)
if liResult:
print('>>>>>>>>>>>>>>>>>>>>>>>>>正在下载js文件>>>>>>>>>>>>>>>>>>>>>>>>>')
for on_url in liResult:
if (on_url.endswith('.js"') or 'js?' in on_url) and 'src=' not in on_url:
js_links = [re.sub('(")|(.*:)', '', on_url)]
if ',' in js_links[0]:
print('检测到js代码中有多路径js_link，正在深入抓取.......')
js_links += js_links[0].split(',')
for js_link in js_links:
if 'http:' not in js_link or 'https:' not in js_link:
js_link = urljoin(self.site_url, js_link)
js_name = re.sub('(.*//)', '', js_link)
l_index = js_name.rfind('/')
dir_path = self.spath + '/'+js_name[:l_index]
if '/$' in dir_path:
dir_path = re.sub('(/\$)', '/', dir_path)
if not os.path.exists(dir_path):
os.system('mkdir -p %s' % dir_path)
print('正在下载js文件：', js_link)
js_file = requests.get(js_link).content
js_name = re.sub('(.*/)', '', js_link)
if js_name[0] == '$':
js_name = js_name.replace('$', '')
with open('./%s' % dir_path + '/' + js_name, 'wb') as f:
f.write(js_file)
print('===========================js文件下载完毕===========================')
def download_css(self, html):
liResult = re.findall('(".*?")', html)
css_links = []
if liResult:
print('>>>>>>>>>>>>>>>>>>>>>>>>>正在下载css文件>>>>>>>>>>>>>>>>>>>>>>>>>')
for on_url in liResult:
if on_url.endswith('.css"') or 'css?' in on_url:
css_link = re.sub('["]', '', on_url)
if 'http:' not in css_link or 'https:' not in css_link:
css_link = urljoin(self.site_url, css_link)
if css_link:
css_name = re.sub('(.*//)', '', css_link)
l_index = css_name.rfind('/')
dir_path = self.spath + '/'+css_name[:l_index]
if '/$' in dir_path:
dir_path = re.sub('(/\$)', '/', dir_path)
if not os.path.exists(dir_path):
os.system('mkdir -p %s' % dir_path)
css_name = re.sub('(.*/)', '', css_link)
if css_name[0] == '$':
css_name = css_name.replace('$', '')
print('正在下载css文件：', css_link)
css_links.append(css_link)
css_file = requests.get(css_link).content
with open('./%s' % (dir_path + '/' + css_name), 'wb') as f:
f.write(css_file)
print('===========================css文件下载完毕===========================')
return css_links
def download_html(self, html):
print('>>>>>>>>>>>>>>>>>>>>>>>>>正在下载网页源码>>>>>>>>>>>>>>>>>>>>>>>>>')
if not os.path.exists(self.spath + '/htmls'):
print(self.base_path + '/htmls', '已经将html文件存在对应目录')
os.system('mkdir -p %s' % self.spath + '/htmls')
else:
print(self.base_path + '/htmls', '已经存在此htmls目录')
if html:
with open('./%s' % (self.spath + '/htmls/' + self.spath + '.html'), 'w', encoding='utf-8') as f:
f.write(html)
print('===========================下载网页源码完毕===========================')
def gs_runner(self, html):
self.download_html(html)
css_links = self.download_css(html)
self.download_js(html)
self.download_imgs(html, css_links)
if __name__ == '__main__':
gs = GovSpider()
gs.start_page()
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