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'.*?[https://www.gxlcms.com/(.*?)]',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('.*?.*?.*?)
',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('.*?.*?.*?',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'.*?[https://www.gxlcms.com/(.*?)]',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
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