Python 爬取各大代理IP网站(元类封装)

import requests

from pyquery import PyQuery as pq

base_headers = {

    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36',

    'Accept-Encoding': 'gzip, deflate, sdch',

    'Accept-Language': 'zh-CN,zh;q=0.8'

}

def get_page(url):

    headers = dict(base_headers)

    print('Getting',url)

    try:

        r = requests.get(url,headers=headers)

        print('Getting result',url,r.status_code)

        if r.status_code == 200:

            return r.text

    except ConnectionError:

        pritn('Cramling Failed',url)

        return None

# 道生一：创建抽取代理的metaclass

class ProxyMetaclass(type):

    """

        元类，在FreeProxyGetter类中加入

        __CrawlName__,__CrawlFunc__和__CrawlFuncCount__

        三个参数，分别表示爬虫函数名，函数实例和爬虫函数的数量。

    """

    # __new__控制__init__的执行，所以在其执行之前

    # cls:代表要__init__的类，此参数在实例化时由Python解释器自动提供

    # name:类名

    # bases：代表继承父类的集合

    # attrs：类的方法及属性的集合

    def __new__(cls, name, bases, attrs):

        count = 0

        # 在attrs字典加入两个key,key的值是个列表

        attrs['__CrawlFunc__'] = []

        attrs['__CrawlName__'] = []

        for k, v in attrs.items():

            if 'crawl_' in k:

                attrs['__CrawlName__'].append(k) #函数名依次添加进attrs['__CrawlName__']列表

                attrs['__CrawlFunc__'].append(v) #函数实例依次添加进attrs['__CrawlFunc__']列表

                print(k,v)

                #print(attrs['__CrawlName__'])

                count += 1

        for k in attrs['__CrawlName__']:

            # 剔除原有的字典键值对

            attrs.pop(k)

        attrs['__CrawlFuncCount__'] = count

        print(attrs)

        return type.__new__(cls, name, bases, attrs)

# 一生二：创建代理获取类

class ProxyGetter(object, metaclass=ProxyMetaclass):

    def get_raw_proxies(self, site):

        proxies = []

        print('Site', site)

        for func in self.__CrawlFunc__:

            if func.__name__==site:

                this_page_proxies = func(self)

                for proxy in this_page_proxies:

                    print('Getting', proxy, 'from', site)

                    proxies.append(proxy)
　　　　　　　　　　print(proxies)

        return proxies

    def crawl_daili66(self, page_count=4):

        start_url = 'http://www.66ip.cn/{}.html'

        urls = [start_url.format(page) for page in range(1, page_count + 1)] # format和%s的用法一样

        for url in urls:

            print('Crawling', url)

            html = get_page(url)

            if html:

                doc = pq(html)

                trs = doc('.containerbox table tr:gt(0)').items()

                for tr in trs:

                    ip = tr.find('td:nth-child(1)').text()

                    port = tr.find('td:nth-child(2)').text()

                    yield ':'.join([ip, port])

　　'''

    def crawl_proxy360(self):

        start_url = 'http://www.proxy360.cn/Region/China'

        print('Crawling', start_url)

        html = get_page(start_url)

        if html:

            doc = pq(html)

            lines = doc('div[name="list_proxy_ip"]').items()

            for line in lines:

                ip = line.find('.tbBottomLine:nth-child(1)').text()

                port = line.find('.tbBottomLine:nth-child(2)').text()

                yield ':'.join([ip, port])

　　'''

    def crawl_goubanjia(self):

        start_url = 'http://www.goubanjia.com/free/gngn/index.shtml'

        html = get_page(start_url)

        if html:

            doc = pq(html)

            tds = doc('td.ip').items()

            for td in tds:

                td.find('p').remove()

                yield td.text().replace(' ', '')

if __name__ == '__main__':

    # 二生三：实例化ProxyGetter

    crawler = ProxyGetter()

    print(crawler.__CrawlName__)

    # 三生万物

    for site_label in range(crawler.__CrawlFuncCount__):

        site = crawler.__CrawlName__[site_label] # site_label是列表的索引值

        myProxies = crawler.get_raw_proxies(site)

运行结果

D:\pythontest>python proxy_ip.py

crawl_goubanjia <function ProxyGetter.crawl_goubanjia at 0x00000000035D2510>

crawl_daili66 <function ProxyGetter.crawl_daili66 at 0x00000000035D2488>

{'__qualname__': 'ProxyGetter', '__module__': '__main__', '__CrawlName__': ['cra

wl_goubanjia', 'crawl_daili66'], '__CrawlFunc__': [<function ProxyGetter.crawl_g

oubanjia at 0x00000000035D2510>, <function ProxyGetter.crawl_daili66 at 0x000000

00035D2488>], 'get_raw_proxies': <function ProxyGetter.get_raw_proxies at 0x0000

0000035D2400>, '__CrawlFuncCount__': }

['crawl_goubanjia', 'crawl_daili66']

Site crawl_goubanjia

Getting http://www.goubanjia.com/free/gngn/index.shtml

Getting result http://www.goubanjia.com/free/gngn/index.shtml 403

[]

Site crawl_daili66

Crawling=== http://www.66ip.cn/1.html

Getting http://www.66ip.cn/1.html

Getting result http://www.66ip.cn/1.html 200

Getting 123.163.97.198: from crawl_daili66

Getting 36.249.109.21: from crawl_daili66

Getting 163.204.245.52: from crawl_daili66

Getting 222.189.247.207: from crawl_daili66

Getting 87.250.218.12: from crawl_daili66

Getting 118.172.176.61: from crawl_daili66

Getting 134.119.214.206: from crawl_daili66

Getting 110.74.208.154: from crawl_daili66

Crawling=== http://www.66ip.cn/2.html

Getting http://www.66ip.cn/2.html

Getting result http://www.66ip.cn/2.html 200

Getting 120.234.138.102: from crawl_daili66

Getting 110.86.136.127: from crawl_daili66

Getting 59.57.38.197: from crawl_daili66

Getting 202.62.86.94: from crawl_daili66

Getting 210.22.176.146: from crawl_daili66

Getting 180.183.136.212: from crawl_daili66

Getting 183.87.153.98: from crawl_daili66

Getting 222.124.2.186: from crawl_daili66

Getting 123.169.126.9: from crawl_daili66

Getting 123.169.126.93: from crawl_daili66

Getting 158.255.249.58: from crawl_daili66

Getting 1.198.72.242: from crawl_daili66

Crawling=== http://www.66ip.cn/3.html

Getting http://www.66ip.cn/3.html

Getting result http://www.66ip.cn/3.html 200

Getting 163.204.246.10: from crawl_daili66

Getting 186.159.112.6: from crawl_daili66

Getting 163.204.246.102: from crawl_daili66

Getting 88.87.72.72: from crawl_daili66

Getting 193.169.118.6: from crawl_daili66

Getting 196.216.220.204: from crawl_daili66

Getting 185.109.62.124: from crawl_daili66

Getting 1.193.246.78: from crawl_daili66

Getting 188.131.239.119: from crawl_daili66

Getting 1.10.188.93: from crawl_daili66

Getting 182.116.237.203: from crawl_daili66

Getting 139.99.223.230: from crawl_daili66

Crawling=== http://www.66ip.cn/4.html

Getting http://www.66ip.cn/4.html

Getting result http://www.66ip.cn/4.html 200

Getting 163.204.246.232: from crawl_daili66

Getting 117.28.96.105: from crawl_daili66

Getting 202.29.220.34: from crawl_daili66

Getting 123.169.114.80: from crawl_daili66

Getting 115.42.34.3: from crawl_daili66

Getting 41.84.131.78: from crawl_daili66

Getting 123.163.96.207: from crawl_daili66

Getting 182.35.83.12: from crawl_daili66

Getting 191.241.226.230: from crawl_daili66

Getting 202.138.236.35: from crawl_daili66

Getting 194.1.193.226: from crawl_daili66

Getting 202.158.77.122: from crawl_daili66

['123.163.97.198:9999', '36.249.109.21:9999', '163.204.245.52:9999', '222.189.247.207:9999', '87.250.218.12:44168',
'118.172.176.61:8080', '134.119.214.206:1080', '110.74.208.154:21776', '120.234.138.102:53779', '110.86.136.127:9999',
'59.57.38.197:9999', '202.62.86.94:83', '210.22.176.146:37299', '180.183.136.212:8080', '183.87.153.98:49602',
'222.124.2.186:8080', '123.169.126.9:3', '123.169.126.93:9999', '158.255.249.58:50100', '1.198.72.242:9999',
'163.204.246.10:2', '186.159.112.6:53281', '163.204.246.102:9999', '88.87.72.72:8080', '193.169.118.6:53281',
'185.109.62.124:808', '1.193.246.78:9999', '188.131.239.119:8118', '1.10.188.93:34871', '182.116.237.203:9999',
'139.99.223.230:8080', '163.204.246.232:9999', '117.28.96.105:9999', '202.29.220.34:38961', '123.169.114.80:9999',
'115.42.34.3:8080', '41.84.131.78:53281', '123.163.96.207:9999', '182.35.83.12:9999', '191.241.226.230:53281',
'202.138.236.35:56413', '194.1.193.226:35646','196.216.220.204:36739', '202.158.77.122:47284']

//看来只有一个代理网站能爬到数据

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