重庆分公司
重庆分公司，新征程启航
为企业提供网站建设、域名注册、服务器等服务
使用python采集脚本之家电子书资源并自动下载到本地的实例脚本-创新互联
jb51上面的资源还比较全，就准备用python来实现自动采集信息，与下载啦。
Python具有丰富和强大的库，使用urllib，re等就可以轻松开发出一个网络信息采集器！
下面，是我写的一个实例脚本，用来采集某技术网站的特定栏目的所有电子书资源，并下载到本地保存！
软件运行截图如下：
在脚本运行时期，不但会打印出信息到shell窗口，还会保存日志到txt文件，记录采集到的页面地址，书籍的名称，大小，服务器本地下载地址以及百度网盘的下载地址！
实例采集并下载创新互联成都网站设计公司的python栏目电子书资源：
# -*- coding:utf-8 -*-
import re
import urllib2
import urllib
import sys
import os
reload(sys)
sys.setdefaultencoding('utf-8')
def getHtml(url):
request = urllib2.Request(url)
page = urllib2.urlopen(request)
htmlcontent = page.read()
#解决中文乱码问题
htmlcontent = htmlcontent.decode('gbk', 'ignore').encode("utf8",'ignore')
return htmlcontent
def report(count, blockSize, totalSize):
percent = int(count*blockSize*100/totalSize)
sys.stdout.write("r%d%%" % percent + ' complete')
sys.stdout.flush()
def getBookInfo(url):
htmlcontent = getHtml(url);
#print "htmlcontent=",htmlcontent; # you should see the ouput html
#crifan
regex_title = '(?P.+?)</h2>';
title = re.search(regex_title, htmlcontent);
if(title):
title = title.group("title");
print "书籍名字:",title;
file_object.write('书籍名字:'+title+'r');
#<li>书籍大小：<span itemprop="fileSize">27.2MB</span></li>
filesize = re.search('<spans+?itemprop="fileSize">(?P<filesize>.+?)</span>', htmlcontent);
if(filesize):
filesize = filesize.group("filesize");
print "文件大小:",filesize;
file_object.write('文件大小:'+filesize+'r');
#<div class="picthumb"><a href="//img.jbzj.com/do/uploads/litimg/151210/1A9262GO2.jpg" target="_blank"
bookimg = re.search('<divs+?class="picthumb"><a href="(?P<bookimg>.+?)" rel="external nofollow" target="_blank"', htmlcontent);
if(bookimg):
bookimg = bookimg.group("bookimg");
print "封面图片：",bookimg;
file_object.write('封面图片:'+bookimg+'r');
#<li><a href="http://xz6.jb51.net:81/201512/books/JavaWeb100(jb51.net).rar" target="_blank">酷云中国电信下载</a></li>
downurl1 = re.search('<li><a href="(?P<downurl1>.+?)" rel="external nofollow" target="_blank">酷云中国电信下载</a></li>', htmlcontent);
if(downurl1):
downurl1 = downurl1.group("downurl1");
print "下载地址1:",downurl1;
file_object.write('下载地址1:'+downurl1+'r');
sys.stdout.write('rFetching ' + title + '...n')
title = title.replace(' ', '');
title = title.replace('/', '');
saveFile = '/Users/superl/Desktop/pythonbook/'+title+'.rar';
if os.path.exists(saveFile):
print "该文件已经下载了！";
else:
urllib.urlretrieve(downurl1, saveFile, reporthook=report);
sys.stdout.write("rDownload complete, saved as %s" % (saveFile) + 'nn')
sys.stdout.flush()
file_object.write('文件下载成功!r');
else:
print "下载地址1不存在";
file_error.write(url+'r');
file_error.write(title+"下载地址1不存在!文件没有自动下载！r");
file_error.write('r');
#<li><a href="http://pan.baidu.com/s/1pKfVNwJ" rel="external nofollow" target="_blank">百度网盘下载2</a></li>
downurl2 = re.search('</a></li><li><a href="(?P<downurl2>.+?)" rel="external nofollow" target="_blank">百度网盘下载2</a></li>', htmlcontent);
if(downurl2):
downurl2 = downurl2.group("downurl2");
print "下载地址2:",downurl2;
file_object.write('下载地址2:'+downurl2+'r');
else:
#file_error.write(url+'r');
print "下载地址2不存在";
file_error.write(title+"下载地址2不存在r");
file_error.write('r');
file_object.write('r');
print "n";
def getBooksUrl(url):
htmlcontent = getHtml(url);
#<ul class="cur-cat-list"><a href="/books/438381.html" rel="external nofollow" class="tit"</ul></div><!--end #content -->
urls = re.findall('<a href="(?P<urls>.+?)" rel="external nofollow" class="tit"', htmlcontent);
for url in urls:
url = "//www.jb51.net"+url;
print url+"n";
file_object.write(url+'r');
getBookInfo(url)
#print "url->", url
if __name__=="__main__":
file_object = open('/Users/superl/Desktop/python.txt','w+');
file_error = open('/Users/superl/Desktop/pythonerror.txt','w+');
pagenum = 3;
for pagevalue in range(1,pagenum+1):
listurl = "//www.jb51.net/ books/list476_%d.html"%pagevalue;
print listurl;
file_object.write(listurl+'r');
getBooksUrl(listurl);
file_object.close();
file_error.close();</pre><p align=center>另外有需要云服务器可以了解下创新互联scvps.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、<a href="https://www.cdcxhl.com/gaofang/" target="_blank">高防服务器</a>、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。</p> <br>
新闻名称：使用python采集脚本之家电子书资源并自动下载到本地的实例脚本-创新互联 <br>
浏览路径：<a href="http://cqcxhl.cn/article/dijhco.html">http://cqcxhl.cn/article/dijhco.html</a>
</div>
</div>
<div class="other">
<h3>其他资讯</h3>
<ul>
<li>
<a href="/article/icjei.html">JavaScript基于replace+正则实现ES6的字符串模版功能-创新互联</a>
</li><li>
<a href="/article/icjoc.html">LCX端口转发实现内网突破-创新互联</a>
</li><li>
<a href="/article/icjdg.html">如何在.Net中将stirng转换成System.Type-创新互联</a>
</li><li>
<a href="/article/icgpg.html">Android中WebView怎么用-创新互联</a>
</li><li>
<a href="/article/icjdc.html">python爬虫如何赚外快-创新互联</a>
</li> </ul>
</div>
</div>
<div class="footer">
<div class="footer_content">
<div class="footer_content_top clear">
<div class="content_top_share fl">
<div><img src="/Public/Home/img/logo.png"></div>
<div class="top_share_content">
<dd>分享至：</dd>
<dt class="bdsharebuttonbox clear" id="share">
<a href="#" class="bds_tsina iconfont fl" data-cmd="tsina" title="分享到新浪微博"></a>
<a href="#" class="bds_sqq iconfont fl" data-cmd="sqq" title="分享到QQ好友"></a>
<a href="#" class="bds_weixin iconfont fl" data-cmd="weixin" title="分享到微信"></a>
<a href="#" class="bds_weixin iconfont fl" data-cmd="tieba" title="分享到贴吧"></a>
</dt>
<script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script>
</div>
</div>
<div class="content_top_left fl clear">
<div class="top_left_list fl">
<dd><a href="/about/">关于我们</a></dd>
<dt>
<a href="/about/#gsjj">公司简介</a>
<a href="/about/#fzlc">发展历程</a>
</dt>
</div>
<div class="top_left_list fl">
<dd><a href="/service/">服务项目</a></dd>
<dt>
<a href="/service/">高端网站建设</a>
<a href="/miniprogram/">小程序开发</a>
<a href="/service/app.html">APP开发</a>
<a href="/service/yingxiao.html">网络营销</a>
</dt>
</div>
<div class="top_left_list fl">
<dd><a href="/jianzhan/">建站知识</a></dd>
<dt>
<a href="/jianzhan/2.html">网站建设</a>
<a href="/jianzhan/3.html">网站设计</a>
<a href="/jianzhan/4.html">网站制作</a>
<a href="/jianzhan/5.html">小程序</a>
</dt>
</div>
<div class="top_left_list fl">
<dd><a href="/contact/">联系我们</a></dd>
<dt>
<a href="/contact/#lxwm">公司地址</a>
<a href="/contact/#rczp">人才招聘</a>
</dt>
</div>
</div>
<div class="content_top_right addressR fr">
<div class="top_right_title addressf_title">
<a href="javascript:;" class="on">成都</a>
<a href="javascript:;">重庆</a>
</div>
<div class="top_right_content addressf">
<div class="right_content_li on">
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">电话：028-86922220</dt>
</div>
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">地址：成都市太升南路288号锦天国际A幢1002号</dt>
</div>
</div>
<div class="right_content_li">
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">电话：028-86922220</dt>
</div>
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">地址：重庆市南岸区弹子石腾龙大道58号2栋21-6</dt>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="footer_content_copyright clear">版权所有：成都创新互联科技有限公司重庆分公司
<a href="http://beian.miit.gov.cn/" rel="nofollow" target="_blank">渝ICP备2021005571号-4</a>
</div>
</div>
<!--浮窗-->
<div class="FloatingWindow clear">
<a href="tencent://message/?uin=1683211881&Site=&Menu=yes" class="FloatingWindow_list fr">
<div class="FloatingWindow_list_title">
<dd class="iconfont"></dd>
<dt><span>在线</span>咨询</dt>
</div>
</a>
<a href="javascript:;" class="FloatingWindow_list fr">
<div class="FloatingWindow_list_title">
<dd class="iconfont"></dd>
<dt>服务热线</dt>
</div>
<div class="FloatingWindow_list_down fadeInRight animated">服务热线：028-86922220</div>
</a>
<a href="javascript:;" class="FloatingWindow_list fr STop">
<div class="FloatingWindow_list_title">
<dd class="iconfont"></dd>
<dt>TOP</dt>
</div>
</a>
</div>
<script src="/Public/Home/js/jquery-1.8.3.min.js"></script>
<script src="/Public/Home/js/comm.js"></script>
<script src="/Public/Home/js/wow.js"></script>
<script src="/Public/Home/js/common.js"></script>
</body>
</html>
<script>
$(".con img").each(function(){
var src = $(this).attr("src"); //获取图片地址
var str=new RegExp("http");
var result=str.test(src);
if(result==false){
var url = "https://www.cdcxhl.com"+src; //绝对路径
$(this).attr("src",url);
}
});
</script>