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   源码介绍

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#!/usr/bin/python2.7
#coding=utf-8
import re;
import urllib;
import urllib.request;
 
header = {
    "User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 UBrowser/1.0.370.1388 Safari/537.36", 
}
 
URL_GETBDWKDOC = "http://wenku.baidu.com/play/{0}?pn={1}";
URL_BDWK = "http://wenku.baidu.com/view/{0}.html";
 
class BdWkDownloader:
    def __init__(self):
        pass;
        
    def getTotalPages(self, id):
        return int(re.compile(r"totalPageNum'\s*:\s*'(\d )'").findall(urllib.request.urlopen(URL_BDWK.format(id)).read().decode("gb2312"))[0]);
        
    def download(self, id, dir = "./"):
        num = self.getTotalPages(id);
        for i in range(0, num):
            request = urllib.request.Request(URL_GETBDWKDOC.format(id, i   1), headers = header);
            data = urllib.request.urlopen(request).read();
            file = open("{0}{1}.{2}".format(dir, i, "swf"), "wb");
            file.write(data[106:]);
            file.close();
        
def main():
    downloader = BdWkDownloader();
    downloader.download("ef13d84ea6c30c2259019e5b");
    
if(__name__ == "__main__"):
    main();