直接贴代码了吧
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#!/usr/bin/env python
# -*- coding:utf-8 -*-
importurllib
importurllib2
defloadPage(url,filename):
"""
作用：根据url发送请求，获取服务器响应文件
url: 需要爬取的url地址
filename : 处理的文件名
"""
print"正在下载 "+ filename
headers = {"User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11"}
request = urllib2.Request(url,headers= headers)
returnurllib2.urlopen(request).read()
defwritePage(html,filename):
"""
作用：将html内容写入到本地
html：服务器相应文件内容
"""
print"正在保存 "+ filename
# 文件写入
withopen(filename,"w")asf:
f.write(html)
print"-"*30
deftiebaSpider(url,beginPage,endPage):
"""
作用：贴吧爬虫调度器，负责组合处理每个页面的url
url : 贴吧url的前部分
beginPage : 起始页
endPage : 结束页
"""
forpageinrange(beginPage,endPage +1):
pn = (page -1) *50
filename ="第"+str(page) +"页.html"
fullurl =url+"&pn="+str(pn)
#print fullurl
html = loadPage(fullurl,filename)
#print html
writePage(html,filename)
print"谢谢使用"
if__name__ =="__main__":
kw =raw_input("请输入需要爬取的贴吧名:")
beginPage =int(raw_input("请输入起始页："))
endPage =int(raw_input("请输入结束页："))
# http: // tieba.baidu.com / f?kw = python & fr = ala0 & tpl = 5
url ="http://tieba.baidu.com/f?"
key = urllib.urlencode({"kw": kw})
fullurl = url + key
tiebaSpider(fullurl,beginPage,endPage)
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拷贝运行即可
