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?Y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