Python爬虫爬取开源IP

水深无声 2023-10-18 19:50 34阅读 0赞

**因为玩爬虫经常要换一些IP，之前写了个爬取IP的小玩具，用的是redis来存取IP地址，同时使用打分机制验证，使用异步IO(asyncio+aiohttp)同时批量使用IP请求一个测试网址，检测携带该IP是否能正常请求成功**

主要包括4个py文件  
![在这里插入图片描述][20190615123212883.png]  
**效果展示**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNTgzNTQ5_size_16_color_FFFFFF_t_70]  
ip存放在列表中，后面紧跟评分

爬取的IP地址是http://www.xicidaili.com/wt 国内一个不太稳定的ip免费提供网

**[main.py][] 提供了3个方法a.b.c方法，直接输入a开始爬取ip数据并且经过check.py方法检测ip可用性(设置检测次数)然后打分，并且存储到redis中；b清除数据库中所有的ip数据；c展示当前IP的分数**  
**[crawl.py][] 中主要就是怼爬取的网址进行数据处理得到想要的IP  
[pool.py][] 是连接redis的配置以及根据python和redis的驱动包自己定义一些操作数据库方法，以及打分  
[check.py][] 使用一个公开的测试IP网站http://httpbin.org/get进行测试当前IP是否可用，同时也是异步IO的使用范例**

**对于打分约定是，当一个IP在规定时间内请求只要成功设置为100分，如果未响应直接设置为5分。100分的IP每次检测的话，一次未响应-1分。**

main.py方法

# -*- coding=utf-8 -*-
    from redissss import check,crawl,pool
    import redis
    #目前只能维护单一的http一个代理池，已经支持选择爬取http or https,但
    # 是爬取到的IP还没能够区分存入redis，以及分开检测可用性问题
    if __name__ == '__main__':
        print('begin')
        b = pool.Poll()
        print('启动前库中有总共%s'%b.get_ip_len())
        print('ip为%s'%b.get_ip_all_list())
    
        while True:
            comd = input('a开始爬取，d清空全部，c分数展示:')
            if comd == 'a':
                a = crawl.Getter()
                a.run(type='http',page=1)
                c = check.Check()
                c.check(count=5)
                print('检测结束后可用总数为%s'%b.get_ip_len())
                print('列表为%s'%b.get_ip_all_list())
    
            elif comd == 'd':
                bb = b.r.zrangebyscore('proxies',0,10,withscores=True)
                print(bb)
                b.r.flushall()
                print('最后前库中有总共%s'%b.get_ip_len())
                print('ip为%s'%b.get_ip_all_list())
    
            elif comd == 'c':
                print('IP分数展示')
                c = b.view_socre()
                print(c)

[check.py][]

# -*- coding=utf-8 -*-
    import aiohttp
    import asyncio
    
    from redissss import pool
    
    url_text = 'http://httpbin.org/get'
    
    class Check(object):
    
        def __init__(self):
            self.redis = pool.Poll()
    
        async def text(self,proxy):
            #把SSL关掉
            conn = aiohttp.TCPConnector(verify_ssl=False)
            #从redis拿出来的数据是b格式的得转换成字符串
            proxy = proxy.decode('utf-8')
            proxy_a = 'http://' + proxy
            #创建一个回话
            async with aiohttp.ClientSession(connector=conn) as session:
                try:
                    async with session.get(url_text,proxy=proxy_a,timeout= 5) as resp:
                        if resp.status in [200]:
                            print('可用IP--->>%s'%proxy_a)
                            self.redis.max(proxy)
                        else:
                            self.redis.reduce_score(proxy)
                            print('请求错误代码%s.%s'%(proxy,resp.status))
    
                except Exception as e:
                    self.redis.reduce_score(proxy)
                    print('请求错误代码%s.%s' % (proxy, resp.status))
    
    
        def check(self,count = None):
            if count == None:
                count = 60
                for i in range(count):
                    try:
                        proxies = self.redis.get_ip_all_list()
                        #大概理解是启动一个事件环，系统不断访问这个事件环看好了没有
                        loop = asyncio.get_event_loop()
                        for i in range(0,len(proxies),300):
                            text_proxies = proxies[i:i + 300]
                            task = [self.text(proxy) for proxy in text_proxies]
                            #运行直到（协程任务task全部执行完）
                            loop.run_until_complete(asyncio.wait(task))
                    except Exception as e:
                        print('错误')
                    count = count-1
                    print('check count --->%s'%count)
            else:
                countss = count
                for i in range(countss):
                    try:
                        proxies = self.redis.get_ip_all_list()
                        #大概理解是启动一个事件环，系统不断访问这个事件环看好了没有
                        loop = asyncio.get_event_loop()
                        for i in range(0,len(proxies),200):
                            text_proxies = proxies[i:i + 200]
                            task = [self.text(proxy) for proxy in text_proxies]
                            #运行直到（协程任务task全部执行完）
                            loop.run_until_complete(asyncio.wait(task))
                    except Exception as e:
                        print('错误')
                    count = count-1
                    print('check count --->%s'%count)

[crawl.py][]

import requests
    from bs4 import BeautifulSoup
    from redissss import pool
    from urllib.parse import urlencode
    
    class Crawl(object):
    
        def geturl(self,type=None, page=11):
            #默认制造http和https页面，返回2个列表，type赋值只返回所需要的类型页面，
            list1 = []
            list2 = []
            http_url = 'http://www.xicidaili.com/wt/'
            https_url = 'http://www.xicidaili.com/wn/'
            if type == None:
                for i in range(1, page+1):
                    http_url_s = http_url + str(i)
                    http_urls_ss = https_url + str(i)
                    list1.append(http_url_s)
                    list2.append(http_urls_ss)
                return list1, list2
            elif type == 'http':
                for i in range(1, page+1):
                    http_url_s = http_url + str(i)
                    list1.append(http_url_s)
                return list1
            elif type == 'https':
                for i in range(1, page+1):
                    http_urls_ss = https_url + str(i)
                    list2.append(http_urls_ss)
                return list2
    
    
        def getinfo(self,url):
            #请求一个网址得到IP
            head = {
                'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',
            }
            rsp = requests.get(url=url,headers = head)
            text = rsp.content.decode('utf-8')
            soup = BeautifulSoup(text,'lxml')
            tags = soup.find_all(class_="odd")
            for i in tags:
                #输出的字符串中可能包含了很多空格或空行,使用 .stripped_strings 可以去除多余空白内容
                ip = list(i.stripped_strings)[0]
                port = list(i.stripped_strings)[1]
                yield ':'.join([ip,port])
    
        def get_proxies(self,type=None, page=11):
            #联合爬取操作
            proxies = []
            print('当前爬取类型%s'%type)
            n = 0
    
            if type==None:
                aaa = self.geturl(page=page)
                for i in aaa[0]:
                    http = self.getinfo(url=i)
                    for proxy in http:
                        print('成功得到的HttpIP：',proxy)
                        proxies.append(proxy)
                for ii in aaa[1]:
                    https = self.getinfo(url=ii)
                    for proxy in https:
                        print('成功得到的HttpsIP：',proxy)
                        proxies.append(proxy)
                return proxies
    
            elif type == 'http':
                aaa = self.geturl(type=type, page=page)
                for i in aaa:
                    n=n+1
                    print('正在爬取http页码-->%s'%n)
                    http = self.getinfo(url=i)
                    for proxy in http:
                        print('爬取到HttpIP：',proxy)
                        proxies.append(proxy)
                return proxies
            elif type == 'https':
                aaa = self.geturl(type=type, page=page)
                for ii in aaa:
                    n=n+1
                    print('正在爬取https页码-->%s'%n)
                    https = self.getinfo(url=ii)
                    for proxy in https:
                        print('爬取到HttpsIP：', proxy)
                        proxies.append(proxy)
                return proxies
    
    
    class Getter():
        def __init__(self):
            self.redis = pool.Poll()
            self.crawl = Crawl()
        def run(self,type=None, page=11):
            print('开始获取')
            proxies = self.crawl.get_proxies(type=type, page=page)
            for proxy in proxies:
                self.redis.add_ip(proxy)

[pool.py][]

# -*- coding=utf-8 -*-
    import redis
    import random
    
    init_score = 10
    max_score = 100
    min_score = 0
    my_host = '127.0.0.1'
    my_port = '6379'
    sequence = 'proxies'
    
    class PoolNoError(ValueError):
        pass
    
    class Poll(object):
        def __init__(self,host = my_host,port = my_port):
            self.r = redis.StrictRedis(host=host, port=port)
    
        def add_ip(self,proxy,score = init_score):
            if not self.r.zscore(sequence,proxy):
                return self.r.zadd(sequence,score,proxy)
    
        def reduce_score(self,proxy):
            score = self.r.zscore(sequence,proxy)
            if score >min_score:
                self.r.zincrby(sequence,proxy,amount=-1)
            else:
                self.r.zrem(sequence,proxy)
        def max(self,proxy):
            self.r.zadd(sequence,max_score,proxy)
    
        def get_ip_len(self):
            return self.r.zcard(sequence)
    
        def get_ip_all_list(self):
            return self.r.zrangebyscore(sequence,min_score,max_score)
    
    
        def choice(self):
            result = self.r.zrangebyscore(sequence,max_score,max_score)
            if len(result):
                return random.choice(result)
            else:
                result = self.r.zrevrange(sequence,0,100)
                if len(result):
                    return random.choice(result)
                else:
                    raise PoolNoError
    
        def exists(self,proxy):
            result = self.r.zscore(sequence,proxy)
            return not self.r.zscore(sequence,proxy) == None
    
        def view_socre(self):
            result = self.r.zrevrange(sequence,start=0,end=10000,withscores=True)
            return result

[20190615123212883.png]: https://img-blog.csdnimg.cn/20190615123212883.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNTgzNTQ5_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2019061512484389.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNTgzNTQ5,size_16,color_FFFFFF,t_70
[main.py]: http://main.py
[crawl.py]: http://crawl.py
[pool.py]: http://pool.py
[check.py]: http://check.py