python抓取最新博客内容并生成Rss

osc的rss不是全文输出的,不开心，所以就有了python抓取osc最新博客生成Rss

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


    from bs4 import BeautifulSoup
    import urllib2

    import datetime
    import time
    import PyRSS2Gen
    from email.Utils import formatdate
    import re
    import sys
    import os
    reload(sys)
    sys.setdefaultencoding('utf-8')

    class RssSpider():
     def __init__(self):
     self.myrss = PyRSS2Gen.RSS2(title='OSChina',
    link='http://my.oschina.net',
    description=str(datetime.date.today()),
    pubDate=datetime.datetime.now(),
     lastBuildDate = datetime.datetime.now(),
    items=[]
    )
    self.xmlpath=r'/var/www/myrss/oschina.xml'

    self.baseurl="http://www.oschina.net/blog"
     #if os.path.isfile(self.xmlpath):
    #os.remove(self.xmlpath)
     def useragent(self,url):
     i_headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) 
     AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36", 
    "Referer": 'http://baidu.com/'}
     req = urllib2.Request(url, headers=i_headers)
     html = urllib2.urlopen(req).read()
     return html
     def enterpage(self,url):
     pattern = re.compile(r'd{4}Sd{2}Sd{2}sd{2}Sd{2}')
    rsp=self.useragent(url)
    soup=BeautifulSoup(rsp)
    timespan=soup.find('div',{'class':'BlogStat'})
    timespan=str(timespan).strip().replace('n','').decode('utf-8')
    match=re.search(r'd{4}Sd{2}Sd{2}sd{2}Sd{2}',timespan)
    timestr=str(datetime.date.today())
     if match:
    timestr=match.group()
     #print timestr
    ititle=soup.title.string
    div=soup.find('div',{'class':'BlogContent'})
    rss=PyRSS2Gen.RSSItem(
    title=ititle,
    link=url,
     description = str(div),
     pubDate = timestr
    )

     return rss
     def getcontent(self):
    rsp=self.useragent(self.baseurl)
    soup=BeautifulSoup(rsp)
    ul=soup.find('div',{'id':'RecentBlogs'})
     for li in ul.findAll('li'):
    div=li.find('div')
     if div is not None:
    alink=div.find('a')
     if alink is not None:
    link=alink.get('href')
     print link
    html=self.enterpage(link)
    self.myrss.items.append(html)
     def SaveRssFile(self,filename):
    finallxml=self.myrss.to_xml(encoding='utf-8')
    file=open(self.xmlpath,'w')
    file.writelines(finallxml)
    file.close()



    if __name__=='__main__':
    rssSpider=RssSpider()
    rssSpider.getcontent()
    rssSpider.SaveRssFile('oschina.xml')

以上所述就是本文的全部内容了，希望大家能够喜欢。