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這篇文章主要介紹了python多線程采集代碼例子,使用了Threading、Queue、MySQLdb等模塊,需要的朋友可以參考下。

代碼一：

#!/usr/bin/python

# -*- coding: utf-8 -*-

#encoding=utf-8

import threading

import Queue

import sys

import urllib2

import re

import MySQLdb

#

# 數據庫變量設置

#

DB_HOST = '127.0.0.1'

DB_USER = "XXXX"

DB_PASSWD = "XXXXXXXX"

DB_NAME = "xxxx"

#

# 變量設置

#

THREAD_LIMIT = 3

jobs = 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 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')

    title = title[0]

    return title

class 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 = None

    urls = []

    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 row

            urls.append([row[0],row[1]])

        workerbee(urls)

        while not info.empty():

            print info.get()

    finally:

        if con:

            con.close()代碼二：

#!/usr/bin/python

# -*- coding: utf-8 -*-

#encoding=utf-8

#Filename:robot.py

import threading,Queue,sys,urllib2,re

#

# 變量設置

#

THREAD_LIMIT = 3        #設置線程數

jobs = Queue.Queue(5)      #設置隊列長度

singlelock = threading.Lock()    #設置一個線程鎖,避免重復調用

urls = ['http://xxx.com/w/n/2013-04-28/1634703505.shtml','http://xxx.com/w/n/2013-04-28/1246703487.shtml','http://xxx.com/w/n/2013-04-28/1028703471.shtml','http://xxx.com/w/n/2013-04-27/1015703426.shtml','http://xxx.com/w/n/2013-04-26/1554703373.shtml','http://xxx.com/w/n/2013-04-26/1512703346.shtml','http://xxx.com/w/n/2013-04-26/1453703334.shtml','http://xxx.com/w/n/2013-04-26/1451703333.shtml','http://xxx.com/w/n/2013-04-26/1445703329.shtml','http://xxx.com/w/n/2013-04-26/1434703322.shtml','http://xxx.com/w/n/2013-04-26/1433703321.shtml','http://xxx.com/w/n/2013-04-26/1433703320.shtml','http://xxx.com/w/n/2013-04-26/1429703318.shtml','http://xxx.com/w/n/2013-04-26/1429703317.shtml','http://xxx.com/w/n/2013-04-26/1409703297.shtml','http://xxx.com/w/n/2013-04-26/1406703296.shtml','http://xxx.com/w/n/2013-04-26/1402703292.shtml','http://xxx.com/w/n/2013-04-26/1353703286.shtml','http://xxx.com/w/n/2013-04-26/1348703284.shtml','http://xxx.com/w/n/2013-04-26/1327703275.shtml','http://xxx.com/w/n/2013-04-26/1239703265.shtml','http://xxx.com/w/n/2013-04-26/1238703264.shtml','http://xxx.com/w/n/2013-04-26/1231703262.shtml','http://xxx.com/w/n/2013-04-26/1229703261.shtml','http://xxx.com/w/n/2013-04-26/1228703260.shtml','http://xxx.com/w/n/2013-04-26/1223703259.shtml','http://xxx.com/w/n/2013-04-26/1218703258.shtml','http://xxx.com/w/n/2013-04-26/1202703254.shtml','http://xxx.com/w/n/2013-04-26/1159703251.shtml','http://xxx.com/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)

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