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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">2946</span></span>  </p> </article><article class="excerpt"> <header> <a title="Ubuntu" class="label label-important zj-del-target" href="/category/55">Ubuntu<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/13562" title="安装Ubuntu 11.04 后的20件事" target="_blank" onclick="return recordId('',)">安装Ubuntu 11.04 后的20件事 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/13562" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/18.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/13562';}else{window.open('/article/13562');}" style="cursor: pointer;">4.28日，Ubuntu11.04就发布了！本文将向你介绍Ubuntu11.04安装后快速配置需要做的20件事。1、不喜欢Unity？切换到Ubuntugnome经典桌面！注销unity桌面环境，然后选择登录环境为“经典桌面”即可进入。若是你喜欢Unity，可是你的显卡不给力3D不支持，怎么办呢？安装Unity-2D：引用sudoapt-add-pparepository:unity-2d-team/unity-2d-dailysudoapt-getupd</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 22:05:20</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2946</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/13435" title="用log4j打印堆栈报错信息" target="_blank" onclick="return recordId('',)">用log4j打印堆栈报错信息 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/13435" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/3.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/13435';}else{window.open('/article/13435');}" style="cursor: pointer;">当多个项目共用一个应用服务器时，堆栈信息只有在控制台才能看到。而控制台只有一个，这样调试极不方便。想了个办法，用log4j保存堆栈信息，代码如下：publicstaticvoiderrorException(Exceptione){StackTraceElement[]ste=e.getStackTrace();logger.userOperateError(e.getMessage());for(inti=0;i<ste.length;i++){logg</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 22:03:44</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2946</span></span>  </p> </article><article class="excerpt"> <header> <a title="C#" class="label label-important zj-del-target" href="/category/43">C#<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/7361" title="C#中日期函数的样式大全" target="_blank" onclick="return recordId('',)">C#中日期函数的样式大全 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/7361" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/9.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/7361';}else{window.open('/article/7361');}" style="cursor: pointer;">---------------------------------------------------------------------------------------------------------------------//获取日期+时间DateTime.Now.ToString();//2008-9-420:02:10DateTime.Now.ToLocalTime().ToString();//2008-9-420:12:12//获取日期</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 01:54:04</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2946</span></span>  </p> </article><article class="excerpt"> <header> <a title="Oracle" class="label label-important zj-del-target" href="/category/45">Oracle<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/6217" title="Zero Downtime Upgrade of Oracle 10g to Oracl" target="_blank" onclick="return recordId('',)">Zero Downtime Upgrade of Oracle 10g to Oracl </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/6217" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/5.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/6217';}else{window.open('/article/6217');}" style="cursor: pointer;">SourceDatabaseDBName:zwcSchemas:HR,OE,PMVersion:10.2.0.4RAC:NoOSVersion:RedHatEnterpriseLinuxServerrelease5.9x86_64OGGVersion:OracleGoldenGateV11.2.1.0.6forOracle10gonLinuxx86-64TargetDatabaseDBName:zwcSchemas:HR,OE,PMVersion:11.2</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 01:52:49</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2946</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/2375" title="地址阵列" target="_blank" onclick="return recordId('',)">地址阵列 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/2375" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/1.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/2375';}else{window.open('/article/2375');}" style="cursor: pointer;">代码/*************************************************************对于一个数组来说，比方inta[]a==&a==&a[0]。这三个值是相等的。代表这个数组的起始地址*************************************************************/#include<stdio.h>#include<string.h>struct{inta,b;}ST[3</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 01:32:52</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2946</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/7.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">2946</span></span>  </p> </article><div class="pagination" style="display:;"> <ul><li><a href="/search/0/1/p/1">首页</a></li> <li class="prev-page"><a href="/search/0/1/p/421">上一页</a></li> <li><a href="/search/0/1/p/420">420</a></li><li><a href="/search/0/1/p/421">421</a></li><li class="active"><span>422</span></li><li><a href="/search/0/1/p/423">423</a></li><li><a href="/search/0/1/p/424">424</a></li> <li class="next-page"><a 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