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python实现爬虫下载漫画示例

WBOY
WBOY原创
2016-06-06 11:29:101897浏览

代码如下:


#!/usr/bin/python3.2
import os,socket
import urllib
import urllib.request,threading,time
import re,sys
global manhuaweb,weburl,floder,chapterbegin,currentthreadnum,threadcount,mutex,mutex2

weburl=''
floder=''
chapterbegin=0
currentthreadnum=0
threadcount=6


if len(sys.argv)>=3:
  weburl=sys.argv[1]
  floder=sys.argv[2]
else:
    print("usag: downloadmanhua weburl floder chapterbegin=0 threadnnum=6")
    sys.exit(0)
if len(sys.argv)>=4:
  chapterbegin=int(sys.argv[3])
if len(sys.argv)>=5:
  threadcount=(int)(sys.argv[4])

 

def jin(i,jinzhi):
        Finalans=""
        answer=i%jinzhi
        i=int(i/jinzhi)
        if answer>9:
            Finalans= ""
            Finalans=""
Finalans chr(ord('a') (answer-10))
         else:
               Finalans=finalans str(answer)
        如果我!=0 :
               Finalans=jin(i,jinzhi) Finalans
        return Finalans
def urlparse(p,a,c,k):
       d={}
        e=lambda c:     jin( c,36)
        如果 1:
                而 c:
                      c=c-1
                       如果不是 k[c]:
                            d[jin(c,36)]=jin(c ,36)                            d [jin(c,36)]=k[c]
               k=[lambda e:d[e]]
                 e=lambda c:'\w '
              c=1
        newstr= ""
        while c:
                 c=c-1
               if k[c]:
                        对于范围内的 i(0,len(p )):
                                                                            对于我
                           tempi=ord(tempi)
                              如果 tempi>=ord('a') 且 tempi                                                                                              来自 new (str) ( tempi)                            elif tempi>=ord('0') 和 tempi                                     newstr =d[chr(tempi)]
                              其他:
                                                                                                                                              一个
新闻的新闻() 🎜>        return newstr
def meipower(s):
         p=re.compile(r"(?=}\().*",re.IGNORECASE)
        s=p.findall(s)
        s=s[0]
        s=s[0:(len(s)-19)]
        par=s.split(',')
        par[3]=par[3][1:len(par[3])]
        answer=par[3].split('|')
        chapterpath=urlparse(par[0],int(par[1]),int(par[2]),answer)
        allurl=re.findall('imgpath=[^;]*',chapterpath)[0]
        allurl=allurl[10:(len(allurl)-2)]
        return allurl
def pictofile(weburl,filename,loop=100):
        if loop<0:
print('can\'t download the picture %s'%weburl)
return
loop=loop-1
if os.path.exists(filename):
return
try:
url=urllib.request.urlopen(weburl)
data=url.read()
if len(data)<2048:
url.close()
pictofile(weburl,filename,loop)
else:
print('download from %s name is %s\n'%(weburl,filename))
myfile=open('%s'%filename,'wb')
myfile.write(data)
myfile.close()
url.close();
except socket.timeout:
print('timeout')
pictofile(weburl,filename,loop)
except Exception as e:
print('error',e)
pictofile(weburl,filename,loop)
finally:
pass
def downloadpic(url,loadpicdir,num):
#download the all url picture to loadpicdir
global currentthreadnum,mutex,mutex2
mymode=re.compile(r'[0-9a-z.]*\Z')
try:
mutex2.acquire()
os.chdir(loadpicdir)
mutex2.release()
except:
print("can't open the floder %s will be create"%loadpicdir)
try:
if(mutex2.locked()):
os.mkdir(loadpicdir)
os.chdir(loadpicdir)
mutex2.release()
print('create floder succeed')
except:
print("can't create floder %s"%loadpicdir)
if(mutex.acquire()):
mutex.release()
quit(0)
name=mymode.findall(url)
filename='manhua'+name[0]
pictofile(url,loadpicdir+'//'+str(num)+'-'+filename)
mutex.acquire()
currentthreadnum=currentthreadnum-1
mutex.release()
def downloadchapter(url,loadpicdir,num,begin=0):
global manhuaweb,threadcount,currentthreadnum,mutex
print(manhuaweb+url)
webdata=urllib.request.urlopen(manhuaweb+url).read()
webdata=webdata.decode('UTF-8')
chaptername=re.findall(r'[^_]*',webdata)[0]<br>        chaptername=chaptername[7:len(chaptername)]<br>        webscrip=re.findall(r'eval.*[^<>]',webdata)<br>        chapterurl=meispower(webscrip[0]);<br>        chapterurl='http://mhimg.ali213.net'+chapterurl<br>        for i in range(begin,num):<br>                try:<br>                        while(currentthreadnum>=threadcount):<br>                                time.sleep(0.5)<br>                        mutex.acquire()<br>                        currentthreadnum=currentthreadnum+1<br>                        mutex.release()<br>                        threading.Thread(target=downloadpic,args=(r'%s%d.jpg'%(chapterurl,i),loadpicdir+chaptername,num)).start()<br>                except socket.error:<br>                        mutex.acquire()<br>                        i=i-1<br>                        currentthreadnum=currentthreadnum-1<br>                        mutex.release()<br>                except Exception as error:<br>                        print(error,'break')<br>                        print('download chapter %d of picture make a error'%i)<br>                        Break<br>if __name__=='__main__':<br>        manhuaweb=r'http://manhua.ali213.net'<br>        socket.setdefaulttimeout(60.0)<br>        mutex=threading.Lock()<br>        mutex2=threading.Lock()</p> <p>        <br>        webfile=urllib.request.urlopen(weburl)<br>        webdata=webfile.read();<br>        webdata=webdata.decode('UTF-8')<br>        meshmode=re.compile (r'</p> <div class="detail_body_right_sec_con">.*</div>')<br>        meshdata=meshmode.findall(webdata)[0]<br>        indexmode=re.compile(r'([0 -9]*页)')<br>        indexdata=indexmode.findall(meshdata) <p>        picurlmode=re.compile(r'/comic/[0-9/]*.html')<br>        picurldata=picurlmode.findall(meshdata)</p> <p><br>        Chapterlength=len(picurldata)<br>        nummode=re.compile(r'[d] ')</p> <p>        i=chapterbegin<br>        while i<chapterlength:>               manhuachapter=picurldata[chapterlength-i-1]<br>                downloadchapter(manhuachapter,floder,int(nummode) .findall(indexdata[章节长度-i-1] )[0]))<br>                i=i 1<br></chapterlength:></p></div><div class="nphpQianMsg"><div class="clear"></div></div><div class="nphpQianSheng"><span>声明:</span><div>本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn</div></div></div><div class="nphpSytBox"><span>上一篇:<a class="dBlack" title="python基础教程之基本内置数据类型介绍" href="http://m.php.cn/zh/faq/86488.html">python基础教程之基本内置数据类型介绍</a></span><span>下一篇:<a class="dBlack" title="python求斐波那契数列示例分享" href="http://m.php.cn/zh/faq/86491.html">python求斐波那契数列示例分享</a></span></div><div class="nphpSytBox2"><div class="nphpZbktTitle"><h2>相关文章</h2><em><a href="http://m.php.cn/zh/article.html" class="bBlack"><i>查看更多</i><b></b></a></em><div class="clear"></div></div><ins class="adsbygoogle" style="display:block" data-ad-format="fluid" data-ad-layout-key="-6t+ed+2i-1n-4w" data-ad-client="ca-pub-5902227090019525" data-ad-slot="8966999616"></ins><script> (adsbygoogle = window.adsbygoogle || []).push({}); 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