标签:python蜘蛛
# coding=utf-8 import re import urllib2 import chardet import sys from bs4 import BeautifulSoup import codecs class Spider(): def __init__(self): self.aTag=re.compile("<a href=\"(http://www.44pq.com/read/[0-9]+?_[0-9]+?.html)\"[^>]*?>(.+?)</a>") self.contentTag=re.compile("<div class=\"readerContent\" id=\"content\">(.+?)</div>",re.I|re.S) def getHtml(self, url): headers = {‘User-Agent‘:‘Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6‘} req=urllib2.Request(url,headers=headers) response = urllib2.urlopen(req) html = response.read() return html #soup=BeautifulSoup(html.decode("GB18030","ignore")) #return soup.findAll("a") #return soup.prettify() #typeEncode = sys.getfilesystemencoding() #infoencode = chardet.detect(html).get(‘encoding‘,‘utf-8‘) #return html.decode(‘GB18030‘,‘ignore‘).encode("utf-8") return html.decode(‘GB18030‘,‘ignore‘).encode(sys.getfilesystemencoding()) def Run(self): bookurl="http://www.44pq.com/read/13567.html" bookname="地球上唯一的魔法师" text=[] matchs=self.aTag.finditer(self.getHtml(bookurl)) alist=list(matchs) total = len(alist) print "total {0}".format(total) i=0 for m in alist: i+=1 text.append(m.group(2).decode("gb18030")) text.append(self.getContent(m.group(1))) self.writeFile(bookname,"\n\n".join(text)) del text[:] print "{0}/{1}".format(i,total) self.writeFile(bookname,"\n\n".join(text)) print "done!" def writeFile(self,filename,text): f=open(filename+".txt","a") f.write(text) f.close() def getContent(self,url): c=self.getHtml(url) c=self.contentTag.search(c).group(1) c=re.sub("<[^>]+?>","",c) c=c.replace("nbsp;","").replace("&","") return c.decode("gb18030") if __name__ == ‘__main__‘: reload(sys) sys.setdefaultencoding(‘utf-8‘) spider = Spider() spider.Run()
声明一下,实在搞不定CSDN编辑器的格式问题了,上述代码中:
self.writeFile(bookname,"\n\n".join(text))
del text[:]
需要声明一点,此代码每抓取一章,就写入文件一次,以防内存占用过大。
self.writeFile(bookname,"\n\n".join(text))如果需要,也可以抓取N章写入文件一次,只需加入一个简单的逻辑判断就OK了。占用多少内存和写多少次文件,每个人有自己不同的衡量标准。
标签:python蜘蛛
原文地址:http://blog.csdn.net/leewhoee/article/details/21507495