python抓取osc最新博客生成Rss，python抓取oscrss,# -*- coding

python抓取osc最新博客生成Rss，python抓取oscrss,# -*- coding

# -*- coding: utf-8 -*-from bs4 import BeautifulSoupimport urllib2import datetimeimport timeimport PyRSS2Genfrom email.Utils import formatdateimport reimport sysimport osreload(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}\S\d{2}\S\d{2}\s\d{2}\S\d{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}\S\d{2}\S\d{2}\s\d{2}\S\d{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')