Python爬虫实战：爬取代理IP

python验证代理IP是否可用

python爬虫-爬取代理IP并通过多线程快速验证（这个验证没跑通）

scrapy爬虫代理——利用crawlera神器，无需再寻找代理IP

Python验证IP是否可用

第一个用了BeautifulSoup，第二个用了PyQuery

有代理网站的样式：

 

自己代码：

#coding=UTF-8
import urllib.request
import chardet
from bs4 import BeautifulSoup     
from pyquery import PyQuery as pyq  

of = open('proxy.txt', 'w')


class ProxyIp:
    
    
    def xiciProxy(self):    
        
        for page in range(1,10):
            
            url = 'http://www.xicidaili.com/nn/%s' % page
            print(url)
            #user_agent = "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/537.36"
            headers = { 'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
                       #'Accept-Encoding':'gzip, deflate, sdch',
                       'Accept-Language':'zh-CN,zh;q=0.8',
                       'Cache-Control':'max-age=0',
                       'Connection':'keep-alive',
                       'Cookie':'_free_proxy_session=BAh7B0kiD3Nlc3Npb25faWQGOgZFVEkiJTE3YTI3ZjgyYzE4NGVhMjhmZTVjMjRiOTVhMmE2YWFhBjsAVEkiEF9jc3JmX3Rva2VuBjsARkkiMWxCYURmRS9DRHpmZ3hNeTFUVFVCcURCeFhSeXQyWG5qbTFsblFIM0Y2R2M9BjsARg%3D%3D--088e944b5bfb2e7d5c2547822a205693aeb68b0c; Hm_lvt_0cf76c77469e965d2957f0553e6ecf59=1491037294,1491448130; Hm_lpvt_0cf76c77469e965d2957f0553e6ecf59=1491449617',
                       'Host':'www.xicidaili.com',        
                       'Upgrade-Insecure-Requests':'1',
                       'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.93 Safari/537.36'
                    }
            data = None
            request = urllib.request.Request(url,data,headers)
            try:        
                response = urllib.request.urlopen(request)
                content = response.read();
                #print(content)
                #print(chardet.detect(content))
                #print(type(content))
                content = str(content,encoding='UTF-8')
                #print(content.decode('UTF-8'))
                #print(bytes.decode(content))
                #print(content.decode())
                #print(content)
            except urllib.request.URLError as e:
                print(e.reason,e.code)   
            
            soup = BeautifulSoup(content)
            trs = soup.find('table', {"id":"ip_list"}).findAll('tr')
            for tr in trs[1:]:
                tds = tr.findAll('td')
                ip = tds[1].text.strip()
                port = tds[2].text.strip()
                protocol = tds[5].text.strip()
                #print(ip,port,protocol)
                
                if protocol == 'HTTP' or protocol == 'HTTPS':
                    of.write('%s=%s:%s\n' % (protocol.lower(), ip, port))
                    print('%s://%s:%s' % (protocol.lower(), ip, port))
        
        
        
    def youDailiProxy(self):
        #尝试使用PyQuery解析
        for page in range(1,2):
           if page == 1:
               url = 'http://www.youdaili.net/Daili/guonei/36718.html'
           else:
               url = 'http://www.youdaili.net/Daili/guonei/36718_%s.html' % page
            
           print(url)
           
           headers = {
                      'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
                      #'Accept-Encoding':'gzip, deflate, sdch'
                      'Accept-Language':'zh-CN,zh;q=0.8',
                      'Cache-Control':'max-age=0',
                      'Connection':'keep-alive',
                      'Cookie':'Hm_lvt_f8bdd88d72441a9ad0f8c82db3113a84=1491557308; Hm_lpvt_f8bdd88d72441a9ad0f8c82db3113a84=1491557384',
                      'Host':'www.youdaili.net',
                      'If-Modified-Since':'Sun, 02 Apr 2017 05:58:18 GMT',
                      'If-None-Match':'W/"58e092fa-9770"',
                      'Referer':'http://www.youdaili.net/Daili/guonei/36718_2.html',
                      'Upgrade-Insecure-Requests':1,
                      'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.93 Safari/537.36'
            }
           request = urllib.request.Request(url,None,headers)
           try:
               response = urllib.request.urlopen(request)
               content = response.read()
           except urllib.request.URLError as e:
               print(e.reason)
           
           content =  bytes.decode(content)
           #print(content)
           jq = pyq(content)
           p = jq(".content").find("p")
           for tmp in p.items():
               #print(tmp.text())
               arr = tmp.text().split("#")
               arr2 = arr[0].split("@")
               protocol = arr2[1]
               ipAndPort = arr2[0]
               print(protocol,ipAndPort)
               
               if protocol == 'HTTP' or protocol == 'HTTPS':
                   of.write('%s=%s\n' % (protocol.lower(),ipAndPort))
                   print('%s://%s' %(protocol.lower(),ipAndPort))
               
        
        
        
proxy = ProxyIp()
#proxy.xiciProxy();
proxy.youDailiProxy()

。。。