用Python写的学校图书馆视频下载工具

学校图书馆视频用webplayer建的，上面的电影更新得比较快，主要还是在局域网内，速度应该可以保证。

但是这个这能在线看，同学都希望能有一个可以下载视频的工具。

我用酷抓6获取了url和http请求头后，用python写了这样一个下载工具，还比较简陋。

刚学Python不久，写的时候都是一边翻着手册的，代码也很乱，凑合着。

  1 import httplib
  2 import string
  3 import os
  4 import os.path
  5 import time
  6 
  7 def getfilename(vod_num):
  8     vod_url="http://vod.ccsu.cn/webmedia/webmedia.das?cmd=1&clientver=4801&prog_id="+vod_num+"&customer_id=2&local=172.16.145.30&proxy=172.16.145.30&uuid=c4cb4544a8c54133-a7ab-0700&osver=Unknown&useragent=9.0.8112.16421&requesttype=1&Offset=0"
  9     vod_headers={"Host":"vod.ccsu.cn","Accept":"image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/vgplayer, application/x-shockwave-flash, */*","User-Agent":"Viewgood/1.0 (1; 1; 1)","Connection":"Keep-Alive","Pragma":"no-cache","Accept-Encoding":"gzip, deflate"}
 10     try:
 11         conn=httplib.HTTPConnection("vod.ccsu.cn")
 12         conn.request("GET",vod_url,"",vod_headers)
 13         res=conn.getresponse()
 14     finally:
 15         conn.close()
 16     tmp=res.read()
 17     print tmp
 18     tmp=string.split(tmp,chr(0))
 19     stype=string.split(tmp[3],"=")
 20     sname=string.split(tmp[5],"=")
 21     return sname[1]+"."+stype[1]
 22 
 23 def getnetfilesize(firstblock):
 24     filesize=1000000
 25     headsize=1024
 26     headsize=string.find(firstblock,"\r\n\r\n")+4
 27     ss=string.split(firstblock,"\r\n",2)
 28     ss=string.split(ss[1],":")
 29     filesize=int(ss[1])
 30     return filesize,headsize
 31 
 32 def getfullfilesize(vod_num):
 33     vod_url="/webmedia/webmedia.tfs?cmd=1&clientver=4801&uuid=347f67d\d153c4887-9cf9-08a8&prog_id="\
 34     +vod_num+\
 35     "&server_id=1&customer_id=7&proxy=&requesttype=1&Offset=0"
 36     vod_headers={"Host":"vod.ccsu.cn","Accept":"image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/vgplayer, application/x-shockwave-flash, */*","User-Agent":"Viewgood/1.0 (1; 1; 1)","Connection":"Keep-Alive","Pragma":"no-cache","Accept-Encoding":"gzip, deflate"}   
 37     nfsize=0
 38     hsize=0
 39     try:
 40         conn=httplib.HTTPConnection("vod.ccsu.cn")
 41         conn.request("GET",vod_url,"",vod_headers)
 42         res=conn.getresponse()
 43         nfsize,hsize=getnetfilesize(res.read(100))
 44     finally:
 45         conn.close()
 46     return nfsize
 47 
 48 def downloadfile(vod_num,offset=0):
 49     vod_url="/webmedia/webmedia.tfs?cmd=1&clientver=4801&uuid=347f67dd153c4887-9cf9-08a8&prog_id="+vod_num+"&server_id=1&customer_id=7&local=172.16.145.30&proxy=&requesttype=1&Offset="+str(offset)
 50     vod_headers={"Host":"vod.ccsu.cn","Accept":"image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/vgplayer, application/x-shockwave-flash, */*","User-Agent":"Viewgood/1.0 (1; 1; 1)","Connection":"Keep-Alive","Pragma":"no-cache","Accept-Encoding":"gzip, deflate"}
 51     fp=file(savefilename,"ab+")
 52     try:
 53         conn=httplib.HTTPConnection("vod.ccsu.cn")
 54         conn.request("GET",vod_url,"",vod_headers)
 55         res=conn.getresponse()
 56         fp.seek(0,2)
 57         bs=1024*100 #block size
 58         readsize=offset #size of read
 59         filetoreadsize=0 #
 60         longyu=0
 61         baifenbi=""
 62         print "saved in:",savefilename
 63         print "downloading..."
 64         while 1:  
 65             block=res.read(bs)
 66             if block == "":
 67                 break
 68             if readsize == offset: 
 69                 filetoreadsize,headsize=getnetfilesize(block)
 70                 block=block[headsize:]
 71                 readsize += len(block)
 72                 fp.write(block)
 73                
 74             else:
 75                 readsize += len(block)
 76                 fp.write(block)
 77             baifenbi="%%%.2f"%(readsize*100.0/netfilesize)
 78             os.system("title "+baifenbi+"  "+str(readsize/1000)+"kb") 
 79 
 80     finally:
 81         conn.close()
 82         fp.close()
 83     print "-"*30
 84     print "download_size:%db"%(readsize)
 85     if readsize<netfilesize:
 86         print "lost of size:%db"%(netfilesize-readsize)
 87 
 88 def getsavepath():
 89     #
 90     #
 91     pfp=open("path.txt","r+")
 92     try:
 93         ppath=pfp.readline()
 94     except:
 95         print "read path.txt error"
 96         return False
 97     finally:
 98         pfp.close()
 99     if os.path.isdir(ppath) == False:
100         print "path error"
101         print "use cwd"
102         ppath=os.getcwd()
103         pfp=open("path.txt","w")
104         try:
105             pfp.write(ppath)
106         except:
107             print "crate path.txt error"
108             return False
109         finally:
110             pfp.close()
111     return ppath
112 
113 def main():
114     #34778 is small
115     print "****vod download****".decode("gbk")
116     print "--code by gk"
117     vod_num=raw_input("please input an id:")
118     print "connecting..."
119     global savefilename
120     global netfilesize
121     savefilename=getsavepath()+"\\"+vod_num+"_"+getfilename(vod_num)
122     offset=0
123     if os.path.isfile(savefilename):
124         offset=os.path.getsize(savefilename)
125         print "exist file size:%db"%(offset)
126     netfilesize=getfullfilesize(vod_num)
127     print "net file size:%db"%(netfilesize)
128     logfp=open("vodlog.log","a")
129     logfp.writelines(time.strftime('%Y-%m-%d',time.localtime(time.time()))+"  "+vod_num+"  "+savefilename+"\n")
130     logfp.close()
131     if offset<netfilesize:
132         downloadfile(vod_num,offset)
133     print "ok"
134     os.system("pause")
135     
136 if __name__ == "__main__":
137     main()

用GUI2EXE打包成exe文件就可以给同学用了。

以后打算用wxPython写个图形界面

posted @ 2013-01-06 14:12  fwindpeak  阅读(439)  评论(0)  编辑  收藏  举报