1.目标分析：

(1)网址：http://www.zhcw.com/ssq/kaijiangshuju/index.shtml?type=0

(2)查看框架的源代码：在中奖信息表格上右击，选择弹出菜单中的“查看框架的源代码”：

(3)右击下一页的链接，再次查看框架源代码，新的框架源代码是：kaijiang.zhcw.com/zhcw/html/ssq/list_2.html

(4)大致明白了，URL的变化规律了，变化的只有list.html这部分，表格中的每一行的数据都包含在一对

标签内，所以在写爬虫时只需先将标签挑选出来，然后再到其中过滤数据就可以了；

2.项目实施

(1)项目文件结构：

(2)getWinningNum.py文件内容：

#! /usr/bin/env python

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

import re

from bs4 import BeautifulSoup

import urllib2

from mylog import MyLog as mylog

class DoubleColorBallItem(object):

date=None #开奖日期

order=None #当年的开奖顺序

red1=None #第一个红色号码

red12=None #第二个红色号码

red3=None #第三个红色号码

red4=None #第四个红色号码

red5=None #第五个红色号码

red6=None #第六个红色号码

blue=None #蓝色号码

money=None #彩池金额

firstPrize=None #一等奖中奖人数

secondPrize=None #二等奖中奖人数

class GetDoubleColorBallNumber(object):

def __init__(self):

self.urls=[ ]

self.log=mylog()

self.getUrls()

self.items=self.spider(self.urls)

self.pipelines(self.items)

def getUrls(self):

URL=r'http://kaijiang.zhcw.com/zhcw/html/ssq/list_1.html'

htmlContent=self.getResponseContent(URL)

soup=BeautifulSoup(htmlContent,'lxml')

tag=soup.find_all(re.compile('p'))[-1]

pages=tag.strong.get_text()

for i in xrange(1,int(pages)+1):

url=r'http://kaijiang.zhcw.com/zhcw/html/ssq/list_'+str(i)+'.html'

self.urls.append(url)

self.log.info(u'添加URL：%s到URLS \r\n' %url)

def getResponseContent(self,url):

try:

response=urllib2.urlopen(url.encode('utf8'))

except:

self.log.error(u'python 返回 URL:%s 数据失败' %url)

else:

self.log.info(u'Python 返回URL:%s A数据成功' %url)

return response.read()

def spider(self,urls):

items=[ ]

for url in urls:

htmlContent=self.getResponseContent(url)

soup=BeautifulSoup(htmlContent,'lxml')

tags=soup.find_all('tr',attrs={ })

for tag in tags:

if tag.find('em'):

item=DoubleColorBallItem()

tagTd=tag.find_all('td')

item.date=tagTd[0].get_text()

item.order=tagTd[1].get_text()

tagEm=tagTd[2].find_all('em')

item.red1=tagEm[0].get_text()

item.red2=tagEm[1].get_text()

item.red3=tagEm[2].get_text()

item.red4=tagEm[3].get_text()

item.red5=tagEm[4].get_text()

item.red6=tagEm[5].get_text()

item.blue=tagEm[6].get_text()

item.money=tagTd[3].find('strong').get_text()

item.firstPrize=tagTd[4].find('strong').get_text()

item.secondPrize=tagTd[5].find('strong').get_text()

items.append(item)

self.log.info(u'获取日期为:%s 的数据成功' %(item.date))

return items

def pipelines(self,items):

fileName=u'双色球.txt'.encode('GBK')

with open(fileName,'w') as fp:

for item in items:

fp.write('%s %s \t %s %s %s %s %s %s %s \t %s \t %s %s \n'

%(item.date,item.order,item.red1,item.red2,item.red3,item.red4,item.red5,item.red6,item.blue,item.money,item.firstPrize,item.secondPrize))

self.log.info(u'将日期为：%s 的数据存入"%s"...' %(item.date,fileName.decode('GBK')))

if __name__ == '__main__':

GDCBN=GetDoubleColorBallNumber()

(3)mylog.py文件的内容：

#! /usr/bin/env python

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

import logging

import getpass

import sys

class MyLog(object):

###########类MyLog的构造函数

def __init__(self):

self.user=getpass.getuser()

self.logger=logging.getLogger(self.user)

self.logger.setLevel(logging.DEBUG)

#########日志文件名

self.logFile=sys.argv[0][0:-3]+'.log'

self.formatter=logging.Formatter('%(asctime)-12s %(levelname)-8s %(name)-10s %(message)-12s \r\n')

#########日志显示到屏幕并输出到日志文件中

self.logHand=logging.FileHandler(self.logFile,encoding='utf8')

self.logHand.setFormatter(self.formatter)

self.logHand.setLevel(logging.DEBUG)

self.logHandSt=logging.StreamHandler()

self.logHandSt.setFormatter(self.formatter)

self.logHandSt.setLevel(logging.DEBUG)

self.logger.addHandler(self.logHand)

self.logger.addHandler(self.logHandSt)

#####日志的5个级别对应以下5个函数

def debug(self,msg):

self.logger.debug(msg)

def info(self,msg):

self.logger.info(msg)

def warn(self,msg):

self.logger.warn(msg)

def error(self,msg):

self.logger.error(msg)

def critical(self,msg):

self.logger.critical(msg)

if __name__ == '__main__':

mylog=MyLog()

mylog.debug(u"I'm debug 测试中文")

mylog.info("I'm info")

mylog.warn("I'm warn")

mylog.error(u"I'm error 测试中文 ")

mylog.critical("I'm critical")

(4)运行结果：

3.结果保存到Excel中：从第三方库中安装xlwt模块，其中xlrd模块负责从Excel中读取数据，xlwt则是将数据写入到Excel中；

(2)先写一个简单的python程序测试一下，excelWrite.py：

#! /usr/bin/env python

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

import xlwt

if __name__ == '__main__':

book=xlwt.Workbook(encoding='utf8',style_compression=0)

sheet=book.add_sheet('dede')

sheet.write(0,0,'hstking')

sheet.write(1,1,u'中文测试'.encode('utf8'))

book.save('F:\\Python\PythonWebScraping\\PythonBeautiSoupProject\\winningNumBS4\\getWinningNum\\1.xls')

在编辑器pycharm中打开1.xls文件：

(3)编写文件sava2excel.py，和getWinningNum.py必须是在同一目录下：

#! /usr/bin/env python

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

import xlwt

class SaveBallDate(object):

def __init__(self,items):

self.items=items

self.run(self.items)

def run(self,items):

fileName=u'双色球.xls'.encode('GBK')

book=xlwt.Workbook(encoding='utf8')

sheet=book.add_sheet('ball',cell_overwrite_ok=True)

sheet.write(0,0,u'开奖日期'.encode('utf8'))

sheet.write(0,1,u'期号'.encode('utf8'))

sheet.write(0,2,u'红1'.encode('utf8'))

sheet.write(0,3,u'红2'.encode('utf8'))

sheet.write(0,4,u'红3'.encode('utf8'))

sheet.write(0,5,u'红4'.encode('utf8'))

sheet.write(0,6,u'红5'.encode('utf8'))

sheet.write(0,7,u'红6'.encode('utf8'))

sheet.write(0,8,u'蓝'.encode('utf8'))

sheet.write(0,9,u'销售金额'.encode('utf8'))

sheet.write(0,10,u'一等奖'.encode('utf8'))

sheet.write(0,11,u'二等奖'.encode('utf8'))

i=1

while i

item=items[i-1]

sheet.write(i,0,item.date)

sheet.write(i,1,item.order)

sheet.write(i,2,item.red1)

sheet.write(i,3,item.red2)

sheet.write(i,4,item.red3)

sheet.write(i,5,item.red4)

sheet.write(i,6,item.red5)

sheet.write(i,7,item.red6)

sheet.write(i,8,item.blue)

sheet.write(i,9,item.money)

sheet.write(i,10,item.firstPrize)

sheet.write(i,11,item.secondPrize)

i+=1

book.save(fileName)

if __name__ == '__main__':

pass

(4)修改getWinningNum.py文件：

(5)运行结果，在编辑器中打开文件双色球.xls：