python实现多线程采集的2个代码例子

代码一：

#!/usr/bin/python/' target='_blank'>python# -*- coding: utf-8 -*-#encoding=utf-8import threadingimport Queueimport sysimport urllib2import reimport mysql/' target='_blank'>mysqldb## 数据库变量设置#DB_HOST = '127.0.0.1'DB_USER = "XXXX"DB_PASSWD = "XXXXXXXX"DB_NAME = "xxxx"## 变量设置#THREAD_LIMIT = 3jobs = Queue.Queue(5)singlelock = threading.Lock()info = Queue.Queue()def workerbee(inputlist):for x in xrange(THREAD_LIMIT):print 'Thead {0} started.'.format(x)t = spider()t.start()for i in inputlist:try:jobs.put(i, block=True, timeout=5)except:singlelock.acquire()print "The queue is full !"singlelock.release()# Wait for the threads to finishsinglelock.acquire() # Acquire the lock so we can printprint "Waiting for threads to finish."singlelock.release() # Release the lockjobs.join() # This command waits for all threads to finish.# while not jobs.empty():# print jobs.get()def getTitle(url,time=10):response = urllib2.urlopen(url,timeout=time)html = response.read()response.close()reg = r'<title>(.*?)</title>'title = re.compile(reg).findall(html)# title = title[0].decode('gb2312','replace').encode('utf-8')title = title[0]return titleclass spider(threading.Thread):def run(self):while 1:try:job = jobs.get(True,1)singlelock.acquire()title = getTitle(job[1])info.put([job[0],title], block=True, timeout=5)# print 'This {0} is {1}'.format(job[1],title)singlelock.release()jobs.task_done()except:break;if __name__ == '__main__':con = Noneurls = []try:con = MySQLdb.connect(DB_HOST,DB_USER,DB_PASSWD,DB_NAME)cur = con.cursor()cur.execute('SELECT id,url FROM `table_name` WHERE `status`=0 LIMIT 10')rows = cur.fetchall()for row in rows:# print rowurls.append([row[0],row[1]])workerbee(urls)while not info.empty():print info.get()finally:if con:con.close()

代码二：

#!/usr/bin/Python# -*- coding: utf-8 -*-#encoding=utf-8#Filename:robot.py import threading,Queue,sys,urllib2,re## 变量设置#THREAD_LIMIT = 3        #设置线程数jobs = Queue.Queue(5)      #设置队列长度singlelock = threading.Lock()    #设置一个线程锁,避免重复调用 urls = ['http://games.sina.com.cn/w/n/2013-04-28/1634703505.shtml','http://games.sina.com.cn/w/n/2013-04-28/1246703487.shtml','http://games.sina.com.cn/w/n/2013-04-28/1028703471.shtml','http://games.sina.com.cn/w/n/2013-04-27/1015703426.shtml','http://games.sina.com.cn/w/n/2013-04-26/1554703373.shtml','http://games.sina.com.cn/w/n/2013-04-26/1512703346.shtml','http://games.sina.com.cn/w/n/2013-04-26/1453703334.shtml','http://games.sina.com.cn/w/n/2013-04-26/1451703333.shtml','http://games.sina.com.cn/w/n/2013-04-26/1445703329.shtml','http://games.sina.com.cn/w/n/2013-04-26/1434703322.shtml','http://games.sina.com.cn/w/n/2013-04-26/1433703321.shtml','http://games.sina.com.cn/w/n/2013-04-26/1433703320.shtml','http://games.sina.com.cn/w/n/2013-04-26/1429703318.shtml','http://games.sina.com.cn/w/n/2013-04-26/1429703317.shtml','http://games.sina.com.cn/w/n/2013-04-26/1409703297.shtml','http://games.sina.com.cn/w/n/2013-04-26/1406703296.shtml','http://games.sina.com.cn/w/n/2013-04-26/1402703292.shtml','http://games.sina.com.cn/w/n/2013-04-26/1353703286.shtml','http://games.sina.com.cn/w/n/2013-04-26/1348703284.shtml','http://games.sina.com.cn/w/n/2013-04-26/1327703275.shtml','http://games.sina.com.cn/w/n/2013-04-26/1239703265.shtml','http://games.sina.com.cn/w/n/2013-04-26/1238703264.shtml','http://games.sina.com.cn/w/n/2013-04-26/1231703262.shtml','http://games.sina.com.cn/w/n/2013-04-26/1229703261.shtml','http://games.sina.com.cn/w/n/2013-04-26/1228703260.shtml','http://games.sina.com.cn/w/n/2013-04-26/1223703259.shtml','http://games.sina.com.cn/w/n/2013-04-26/1218703258.shtml','http://games.sina.com.cn/w/n/2013-04-26/1202703254.shtml','http://games.sina.com.cn/w/n/2013-04-26/1159703251.shtml','http://games.sina.com.cn/w/n/2013-04-26/1139703233.shtml'] def workerbee(inputlist):  for x in xrange(THREAD_LIMIT):    print 'Thead {0} started.'.format(x)    t = spider()    t.start()  for i in inputlist:    try:      jobs.put(i, block=True, timeout=5)    except:      singlelock.acquire()      print "The queue is full !"      singlelock.release()   # Wait for the threads to finish  singlelock.acquire()    # Acquire the lock so we can print  print "Waiting for threads to finish."  singlelock.release()    # Release the lock  jobs.join()       # This command waits for all threads to finish.  # while not jobs.empty():  #  print jobs.get() def getTitle(url,time=10):  response = urllib2.urlopen(url,timeout=time)  html = response.read()  response.close()  reg = r'<title>(.*?)</title>'  title = re.compile(reg).findall(html)  title = title[0].decode('gb2312','replace').encode('utf-8')  return title class spider(threading.Thread):  def run(self):    while 1:      try:        job = jobs.get(True,1)        singlelock.acquire()        title = getTitle(job)        print 'This {0} is {1}'.format(job,title)        singlelock.release()        jobs.task_done()      except:        break; if __name__ == '__main__':  workerbee(urls)