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以一种"廉价"的方式获取页面的标题(downmoon)

有朋友问到：“我需要得到一个webpage的title，因为这个title一般都比较靠前，只要取得html的前面少量内容就可以了。因为要取得很多个页面的title,如果下载整个htmlcode，肯定比较浪费时间。.net好像没有现成的类可以干这件事情(取得部分html)，我应该如何去实现？”一种比较"廉价"(即较小成本条件下)的解决思路：第一步：取出含有页面title部分的最小集合。这是“廉价”的关键！第二步：用正则表达式取出和</title</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 22:21:16</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2838</span></span>  </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/13810" title="swfupload浅析" target="_blank" onclick="return recordId('',)">swfupload浅析 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/13810" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/11.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/13810';}else{window.open('/article/13810');}" style="cursor: pointer;">一、简介和示例SWFUploadisasmallJavaScript/Flashlibrarytogetthebestofbothworlds.ItfeaturesthegreatuploadcapabilitiesofFlashandtheaccessibilityandeaseofHTML/CSS。官方站点：http://www.swfupload.org/简单来说，swfupload这个上传库是可以显示上传进度以及上传速度等上传信息。一般实现这种上传</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 22:08:20</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2838</span></span>  </p> </article><article class="excerpt"> <header> <a title="Linux" class="label label-important zj-del-target" href="/category/53">Linux<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/2200" title="Linux学习笔记7——linux中的静态库和动态库" target="_blank" onclick="return recordId('',)">Linux学习笔记7——linux中的静态库和动态库 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/2200" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/16.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/2200';}else{window.open('/article/2200');}" style="cursor: pointer;">一、静态库的编译静态库的编译过程如下：1、编译成目标文件这里有一个可选项-static，调用格式：gcc-c-static代码文件名.c2、归档成静态库A、归档的工具是ar工具，使用ar-r可以将文件归档成静态库，调用格式：ar-r静态库文件被归档的文件例如：我们这有两个C文件，分别为test1.c和test2.c首先我们将它编译成目标文件：gcc-c-statictest1.cgcc-c-statictest2.c此时会产生两个文件，分别为test1.o</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-12 01:32:50</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2838</span></span>  </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/887" title="用mstsc /console 强行“踢”掉其它在线的用户" target="_blank" onclick="return recordId('',)">用mstsc /console 强行“踢”掉其它在线的用户 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/887" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/2.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/887';}else{window.open('/article/887');}" style="cursor: pointer;">由于公司有很多windows服务器，而且有很大一部分不在国内，所以经常需要使用远程桌面进行连接，这其中，就会经常遇到因为超出了最大连接数，而不能连接的事情，其中最头痛的就是，在连接国外的服务器时，由于网速的原因，在辛辛苦苦输入的用户名和口令，特别是一些极其变态、难记的口令，点击确定后，却告诉你已经超出了最大连接数...遇到这样的事情，该怎么办呢？通常的办法是：1：如果感觉是办公室内部的同事占着，就用msn、qq在线问问，询问是否占了，如果占了不用，劳驾下来</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-12 01:32:19</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2838</span></span>  </p> </article><article class="excerpt"> <header> <a title="各行各业" class="label label-important zj-del-target" href="/category/38">各行各业<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/283" title="谷歌浏览器的源码分析(10)" target="_blank" onclick="return recordId('',)">谷歌浏览器的源码分析(10) </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/283" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/19.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/283';}else{window.open('/article/283');}" style="cursor: pointer;">上一次已经分析到输入字符后，就需要把这些关键字去查找历史的连接，或者相关的内容，那么可多米的浏览器又是从那里去找到这些数据呢？现在就来分析这方面相关的内容。它主要通下面的函数来实现：#001voidAutocompleteEdit::UpdatePopup(){冻结输入。#002ScopedFreezefreeze(this,GetTextObjectModel());设置正在输入过程中。#003SetInputInProgress(true);#004如</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-12 01:31:57</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2838</span></span>  </p> </article><article class="excerpt"> <header> <a title="ASP.NET" class="label label-important zj-del-target" href="/category/56">ASP.NET<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/22163" title="在 ASP.NET 中执行 URL 重写" target="_blank" onclick="return recordId('',)">在 ASP.NET 中执行 URL 重写 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/22163" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/19.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/22163';}else{window.open('/article/22163');}" style="cursor: pointer;">在ASP.NET中执行URL重写发布日期：8/23/2004|更新日期：8/23/2004ScottMitchell4GuysFromRolla.com适用范围：Microsoft®ASP.NET摘要：介绍如何使用MicrosoftASP.NET执行动态URL重写。URL重写是截取传入Web请求并自动将请求重定向到其他URL的过程。讨论实现URL重写的各种技术，并介绍执行URL重写的一些实际情况。下载本文的源代码。本页内容引言URL重写的常见用法请求到达I</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 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