Python使用代理抓取网站图片（多线程）__self_proxy_print_urllib2_target_

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Python使用代理抓取网站图片（多线程）

来源: 互联网发布时间：2014-10-04

本文导语: 一、功能说明：1. 多线程方式抓取代理服务器，并多线程验证代理服务器ps 代理服务器是从http://www.cnproxy.com/ （测试只选择了8个页面）抓取2. 抓取一个网站的图片地址，多线程随机取一个代理服务器下载图片二、实现代码代...

一、功能说明：
1. 多线程方式抓取代理服务器，并多线程验证代理服务器
ps 代理服务器是从http://www.cnproxy.com/ （测试只选择了8个页面）抓取
2. 抓取一个网站的图片地址，多线程随机取一个代理服务器下载图片
二、实现代码

代码如下:

#!/usr/bin/env python
#coding:utf-8

import urllib2
import re
import threading
import time
import random

rawProxyList = []
checkedProxyList = []
imgurl_list = []

#抓取代理网站
portdicts ={'v':"3",'m':"4",'a':"2",'l':"9",'q':"0",'b':"5",'i':"7",'w':"6",'r':"8",'c':"1"}
targets = []
for i in xrange(1,9):
target = r"http://www.cnproxy.com/proxy%d.html" % i
targets.append(target)
#print targets

#抓取代理服务器正则
p = re.compile(r'''(.+?)document.write(":"+(.+?))(.+?).+?(.+?)''')

#获取代理的类
class ProxyGet(threading.Thread):
    def __init__(self,target):
        threading.Thread.__init__(self)
        self.target = target

    def getProxy(self):
        print "代理服务器目标网站： " + self.target
        req = urllib2.urlopen(self.target)
        result = req.read()
        #print chardet.detect(result)
        matchs = p.findall(result)
        for row in matchs:
            ip=row[0]
            port =row[1]
            port = map(lambda x:portdicts[x],port.split('+'))
            port = ''.join(port)
            agent = row[2]
            addr = row[3].decode("cp936").encode("utf-8")
            proxy = [ip,port,addr]
            #print proxy
            rawProxyList.append(proxy)

def run(self):
self.getProxy()

#检验代理的类
class ProxyCheck(threading.Thread):
    def __init__(self,proxyList):
        threading.Thread.__init__(self)
        self.proxyList = proxyList
        self.timeout = 5
        self.testUrl = "http://www.baidu.com/"
        self.testStr = "030173"

    def checkProxy(self):
        cookies = urllib2.HTTPCookieProcessor()
        for proxy in self.proxyList:
            proxyHandler = urllib2.ProxyHandler({"http" : r'http://%s:%s' %(proxy[0],proxy[1])})
            #print r'http://%s:%s' %(proxy[0],proxy[1])
            opener = urllib2.build_opener(cookies,proxyHandler)
            opener.addheaders = [('User-agent', 'Mozilla/5.0 (Windows NT 6.2; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0')]
            #urllib2.install_opener(opener)
            t1 = time.time()

            try:
                #req = urllib2.urlopen("http://www.baidu.com", timeout=self.timeout)
                req = opener.open(self.testUrl, timeout=self.timeout)
                #print "urlopen is ok...."
                result = req.read()
                #print "read html...."
                timeused = time.time() - t1
                pos = result.find(self.testStr)
                #print "pos is %s" %pos

                if pos > 1:
                    checkedProxyList.append((proxy[0],proxy[1],proxy[2],timeused))
                    #print "ok ip: %s %s %s %s" %(proxy[0],proxy[1],proxy[2],timeused)
                else:
                     continue
            except Exception,e:
                #print e.message
                continue

def run(self):
self.checkProxy()

#获取图片地址函数
def imgurlList(url_home):
    global imgurl_list
    home_page = urllib2.urlopen(url_home)
    url_re = re.compile(r'

')
pic_re = re.compile(r'