Python制作爬虫抓取美女图

作为一个新世纪有思想有文化有道德时刻准备着的潘磕星嗄辏谙衷谡庋桓錾缁嶂校奶畚掖舐サ种拼蟀俣鹊那疤嵯拢皇露仙贤涔YY看看斗鱼翻翻美女图片那是必不可少的，可是美图虽多翻页费劲！今天我们就搞个爬虫把美图都给扒下来！本次实例有2个：煎蛋上的妹子图，某网站的rosi图。我只是一个学习python的菜鸟，技术不可耻，技术是无罪的！！！

煎蛋：

先说说程序的流程：获取煎蛋妹子图URL，得到网页代码，提取妹子图片地址，访问图片地址并将图片保存到本地。Ready？ 先让我们看看煎蛋妹子网页：

我们得到URL为：http://jandan.net/ooxx/page-1764#comments 1764就是页码， 首先我们要得到最新的页码，然后向前寻找，然后得到每页中图片的url。下面我们分析网站代码写出正则表达式！

根据之前文章的方法我们写出如下函数getNewPage：

def __getNewPage(self):
    pageCode = self.Get(self.__Url)
    type = sys.getfilesystemencoding()
    pattern = re.compile(r'<div .*?cp-pagenavi">.*?<span .*?current-comment-page">\[(.*?)\]</span>',re.S)
    newPage = re.search(pattern,pageCode.decode("UTF-8").encode(type))
    print pageCode.decode("UTF-8").encode(type)
    if newPage != None:
      return newPage.group(1)
    return 1500

不要问我为什么如果失败返回1500。。。 因为煎蛋把1500页之前的图片都给吃了。 你也可以返回0。接下来是图片的

def __getAllPicUrl(self,pageIndex):
    realurl = self.__Url + "page-" + str(pageIndex) + "#comments"
    pageCode = self.Get(realurl)
    type = sys.getfilesystemencoding()
    pattern = re.compile('<p>.*?<a .*?view_img_link">.*?</a>.*?<img src="(.*?)".*?</p>',re.S)
    items = re.findall(pattern,pageCode.decode("UTF-8").encode(type))
    for item in items:
      print item

好了，得到了图片地址，接下来就是访问图片地址然后保存图片了：

def __savePics(self,img_addr,folder):
    for item in img_addr:
      filename = item.split('/')[-1]
      print "正在保存图片：" + filename
      with open(filename,'wb') as file:
        img = self.Get(item)
        file.write(img)

当你觉得信心满满的时候，一定会有一盆冷水浇到你的头上，毕竟程序就是这样，考验你的耐性，打磨你的自信。你测试了一会儿，然后你发现你重启程序后再也无法获取最新页码，你觉得我什么也没动啊为什么会这样。别着急，我们将得到的网页代码打印出来看看：

看到了吧，是服务器感觉你不像浏览器访问的结果把你的ip给屏蔽了。 真是给跪了，辛辛苦苦码一年，屏蔽回到解放前！那么这个如何解决呢，答：换ip 找代理。接下来我们要改一下我们的HttpClient.py 将里面的opener设置下代理服务器。具体代理服务器请自行百度之，关键字：http代理 。 想找到一个合适的代理也不容易 自己ie Internet选项挨个试试，测试下网速。

# -*- coding: utf-8 -*-
import cookielib, urllib, urllib2, socket
import zlib,StringIO
class HttpClient:
 __cookie = cookielib.CookieJar()
 __proxy_handler = urllib2.ProxyHandler({"http" : '42.121.6.80:8080'})#设置代理服务器与端口
 __req = urllib2.build_opener(urllib2.HTTPCookieProcessor(__cookie),__proxy_handler)#生成opener
 __req.addheaders = [
  ('Accept', 'application/javascript, */*;q=0.8'),
  ('User-Agent', 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)')
 ]
 urllib2.install_opener(__req)

 def Get(self, url, refer=None):
  try:
   req = urllib2.Request(url)
   #req.add_header('Accept-encoding', 'gzip')
   if not (refer is None):
    req.add_header('Referer', refer)
   response = urllib2.urlopen(req, timeout=120)
   html = response.read()
   #gzipped = response.headers.get('Content-Encoding')
   #if gzipped:
   #  html = zlib.decompress(html, 16+zlib.MAX_WBITS)
   return html
  except urllib2.HTTPError, e:
   return e.read()
  except socket.timeout, e:
   return ''
  except socket.error, e:
   return ''

然后，就可以非常愉快的查看图片了。不过用了代理速度好慢。。。可以设置timeout稍微长一点儿，防止图片下载不下来！

好了，rosi的下篇文章再放！现在是时候上一波代码了：

# -*- coding: utf-8 -*-
import cookielib, urllib, urllib2, socket
import zlib,StringIO
class HttpClient:
 __cookie = cookielib.CookieJar()
 __proxy_handler = urllib2.ProxyHandler({"http" : '42.121.6.80:8080'})
 __req = urllib2.build_opener(urllib2.HTTPCookieProcessor(__cookie),__proxy_handler)
 __req.addheaders = [
  ('Accept', 'application/javascript, */*;q=0.8'),
  ('User-Agent', 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)')
 ]
 urllib2.install_opener(__req)

 def Get(self, url, refer=None):
  try:
   req = urllib2.Request(url)
   req.add_header('Accept-encoding', 'gzip')
   if not (refer is None):
    req.add_header('Referer', refer)
   response = urllib2.urlopen(req, timeout=120)
   html = response.read()
   gzipped = response.headers.get('Content-Encoding')
   if gzipped:
     html = zlib.decompress(html, 16+zlib.MAX_WBITS)
   return html
  except urllib2.HTTPError, e:
   return e.read()
  except socket.timeout, e:
   return ''
  except socket.error, e:
   return ''

 def Post(self, url, data, refer=None):
  try:
   #req = urllib2.Request(url, urllib.urlencode(data))
   req = urllib2.Request(url,data)
   if not (refer is None):
    req.add_header('Referer', refer)
   return urllib2.urlopen(req, timeout=120).read()
  except urllib2.HTTPError, e:
   return e.read()
  except socket.timeout, e:
   return ''
  except socket.error, e:
   return ''

 def Download(self, url, file):
  output = open(file, 'wb')
  output.write(urllib2.urlopen(url).read())
  output.close()

# def urlencode(self, data):
#  return urllib.quote(data)

 def getCookie(self, key):
  for c in self.__cookie:
   if c.name == key:
    return c.value
  return ''

 def setCookie(self, key, val, domain):
  ck = cookielib.Cookie(version=0, name=key, value=val, port=None, port_specified=False, domain=domain, domain_specified=False, domain_initial_dot=False, path='/', path_specified=True, secure=False, expires=None, discard=True, comment=None, comment_url=None, rest={'HttpOnly': None}, rfc2109=False)
  self.__cookie.set_cookie(ck)
#self.__cookie.clear() clean cookie
# vim : tabstop=2 shiftwidth=2 softtabstop=2 expandtab

HttpClient

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from HttpClient import HttpClient
import sys,re,os
class JianDan(HttpClient):
  def __init__(self):
    self.__pageIndex = 1500 #之前的图片被煎蛋吞了
    self.__Url = "http://jandan.net/ooxx/"
    self.__floder = "jiandan"
  def __getAllPicUrl(self,pageIndex):
    realurl = self.__Url + "page-" + str(pageIndex) + "#comments"
    pageCode = self.Get(realurl)
    type = sys.getfilesystemencoding()
    pattern = re.compile('<p>.*?<a .*?view_img_link">.*?</a>.*?<img src="(.*?)".*?</p>',re.S)
    items = re.findall(pattern,pageCode.decode("UTF-8").encode(type))
    for item in items:
      print item
    self.__savePics(items,self.__floder)

  def __savePics(self,img_addr,folder):
    for item in img_addr:
      filename = item.split('/')[-1]
      print "正在保存图片：" + filename
      with open(filename,'wb') as file:
        img = self.Get(item)
        file.write(img)

  def __getNewPage(self):
    pageCode = self.Get(self.__Url)
    type = sys.getfilesystemencoding()
    pattern = re.compile(r'<div .*?cp-pagenavi">.*?<span .*?current-comment-page">\[(.*?)\]</span>',re.S)
    newPage = re.search(pattern,pageCode.decode("UTF-8").encode(type))
    print pageCode.decode("UTF-8").encode(type)
    if newPage != None:
      return newPage.group(1)
    return 1500

  def start(self):
    isExists=os.path.exists(self.__floder)#检测是否存在目录
    print isExists
    if not isExists:
      os.mkdir(self.__floder)
    os.chdir(self.__floder)
    page = int(self.__getNewPage())
    for i in range(self.__pageIndex,page):
      self.__getAllPicUrl(i)

if __name__ == '__main__':
  jd = JianDan()
  jd.start()

JianDan