尝试使用Python多线程抓取代理服务器IP地址的示例

这里以抓取 http://www.proxy.com.ru 站点的代理服务器为例，代码如下：

    #!/usr/bin/env python
    #coding:utf-8
    import urllib2
    import re
    import threading
    import time
    import MySQLdb
    rawProxyList = []
    checkedProxyList = []
    #抓取代理网站
    targets = []
    for i in xrange(1,42):
      target = r"http://www.proxy.com.ru/list_%d.html" % i
      targets.append(target)
    #抓取代理服务器正则
    p = re.compile(r'''<tr><b><td>(\d+)</td><td>(.+?)</td><td>(\d+)</td><td>(.+?)</td><td>(.+?)</td></b></tr>''')
    #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)
    #  print matchs
      for row in matchs:
       ip=row[1]
       port =row[2]
       addr = row[4].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()
    if __name__ == "__main__":
     getThreads = []
     checkThreads = []
    #对每个目标网站开启一个线程负责抓取代理
    for i in range(len(targets)):
     t = ProxyGet(targets[i])
     getThreads.append(t)
    for i in range(len(getThreads)):
     getThreads[i].start()
    for i in range(len(getThreads)):
     getThreads[i].join()
    print '.'*10+"总共抓取了%s个代理" %len(rawProxyList) +'.'*10
    #开启20个线程负责校验，将抓取到的代理分成20份，每个线程校验一份
    for i in range(20):
     t = ProxyCheck(rawProxyList[((len(rawProxyList)+19)/20) * i:((len(rawProxyList)+19)/20) * (i+1)])
     checkThreads.append(t)
    for i in range(len(checkThreads)):
     checkThreads[i].start()
    for i in range(len(checkThreads)):
     checkThreads[i].join()
    print '.'*10+"总共有%s个代理通过校验" %len(checkedProxyList) +'.'*10
    #插入数据库，表结构自己创建，四个字段ip,port,speed,address
    def db_insert(insert_list):
     try:
      conn = MySQLdb.connect(host="localhost", user="root", passwd="admin",db="m_common",charset='utf8')
      cursor = conn.cursor()
      cursor.execute('delete from proxy')
      cursor.execute('alter table proxy AUTO_INCREMENT=1')
      cursor.executemany("INSERT INTO proxy(ip,port,speed,address) VALUES (%s,%s,%s,%s)",insert_list)
      conn.commit()
      cursor.close()
      conn.close()
     except MySQLdb.Error,e:
      print "Mysql Error %d: %s" % (e.args[0], e.args[1])
    #代理排序持久化
    proxy_ok = []
    f= open("proxy_list.txt",'w+')
    for proxy in sorted(checkedProxyList,cmp=lambda x,y:cmp(x[3],y[3])):
     if proxy[3] < 8:
      #print "checked proxy is: %s:%s\t%s\t%s" %(proxy[0],proxy[1],proxy[2],proxy[3])
      proxy_ok.append((proxy[0],proxy[1],proxy[3],proxy[2]))
      f.write("%s:%s\t%s\t%s\n"%(proxy[0],proxy[1],proxy[2],proxy[3]))
    f.close()
    db_insert(proxy_ok)

测试：

    python proxy.py

结果如下：

    ['61.58.94.179', '8088', '\xe5\x8f\xb0\xe6\xb9\xbe\xe7\x9c\x81 \xe5\x8f\xb0\xe6\xb9\xbe\xe5\xae\xbd\xe9\xa2\x91\xe9\x80\x9a\xe8\xae\xaf\xe9\xa1\xbe\xe9\x97\xae\xe8\x82\xa1\xe4\xbb\xbd\xe6\x9c\x89\xe9\x99\x90\xe5\x85\xac\xe5\x8f\xb8']
    ['200.84.116.99', '9064', '\xe5\xa7\x94\xe5\x86\x85\xe7\x91\x9e\xe6\x8b\x89 ']
    ['183.223.204.8', '8123', '\xe5\x9b\x9b\xe5\xb7\x9d\xe7\x9c\x81\xe8\x87\xaa\xe8\xb4\xa1\xe5\xb8\x82 \xe7\xa7\xbb\xe5\x8a\xa8']
    ..........总共抓取了1921个代理..........
    ..........总共有524个代理通过校验..........
    # more proxy_list.txt
    202.106.169.142:80  北京市 联通ADSL 0.291432857513
    111.13.136.59:80  北京市 移动  0.297957897186
    111.13.136.56:80  北京市 移动  0.373070955276
    111.206.81.248:80  北京市 联通  0.403017997742
    111.13.136.58:80  北京市 移动  0.414332151413
    124.202.217.134:8118 北京市 电信通 0.416817903519
    124.202.183.218:8118 北京市 电信通 0.426618099213
    120.132.71.232:80  北京市 联通  0.440200090408
    61.232.6.164:8081  北京市 铁通  0.469615936279
    118.144.96.253:80  北京市 电信通 0.485229969025
    203.192.10.66:80  北京市 新华社 0.51485991478
    124.202.182.22:8118  北京市 电信通 0.553130865097

数据库：

    mysql> select * from m_common.proxy limit 10;

    +----------+-----------------+------+----------+----------------------+---------------------+
    | proxy_id | ip    | port | speed | address    | create_time   |
    +----------+-----------------+------+----------+----------------------+---------------------+
    |  1 | 202.106.169.142 | 80 | 0.291433 | 北京市 联通ADSL  | 2015-02-26 11:29:24 |
    |  2 | 111.13.136.59 | 80 | 0.297958 | 北京市 移动   | 2015-02-26 11:29:24 |
    |  3 | 111.13.136.56 | 80 | 0.373071 | 北京市 移动   | 2015-02-26 11:29:24 |
    |  4 | 111.206.81.248 | 80 | 0.403018 | 北京市 联通   | 2015-02-26 11:29:24 |
    |  5 | 111.13.136.58 | 80 | 0.414332 | 北京市 移动   | 2015-02-26 11:29:24 |
    |  6 | 124.202.217.134 | 8118 | 0.416818 | 北京市 电信通  | 2015-02-26 11:29:24 |
    |  7 | 124.202.183.218 | 8118 | 0.426618 | 北京市 电信通  | 2015-02-26 11:29:24 |
    |  8 | 120.132.71.232 | 80 | 0.4402 | 北京市 联通   | 2015-02-26 11:29:24 |
    |  9 | 61.232.6.164 | 8081 | 0.469616 | 北京市 铁通   | 2015-02-26 11:29:24 |
    |  10 | 118.144.96.253 | 80 | 0.48523 | 北京市 电信通  | 2015-02-26 11:29:24 |
    +----------+-----------------+------+----------+----------------------+---------------------+
    10 rows in set (0.00 sec)