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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">2932</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/10344" title="Selenium - IDE模式匹配" target="_blank" onclick="return recordId('',)">Selenium - IDE模式匹配 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/10344" 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/10344';}else{window.open('/article/10344');}" style="cursor: pointer;">Selenium-IDE模式匹配在SeleniumIDE中，如定位器，模式是selenium中经常使用的一种类型的参数。它允许用户描述特殊字符的模式。很多时候，我们想核实文字是动态的，在这种情况下，模式匹配是非常有用的。模式匹配是用于所有验证点命令-VerifyTextPresent，verifyTitle，verifyAlert，assertConfirmation，verifyText和verifyPrompt有三种方法来定义一个模式-通配符，正则表达</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 09:27:23</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2932</span></span>  </p> </article><article class="excerpt"> <header> <a title="SqlServer" class="label label-important zj-del-target" href="/category/46">SqlServer<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/4534" title="[SQL]不要让SQLServer帮你自动转换SQL命令中的" target="_blank" onclick="return recordId('',)">[SQL]不要让SQLServer帮你自动转换SQL命令中的 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/4534" 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/4534';}else{window.open('/article/4534');}" style="cursor: pointer;">为什么不要让SQLServer帮你自动转换SQL命令中的数据类型ReportDate：2003/12/5Preparedby：郑昀Articlelastmodifiedon2004-2-16Theinformationinthisarticleappliesto:üMicrosoftSQLServer2000,7.0问题陈述:有一天，执行SELECT*FROMXXX_ORIGINAL_20031205wheremsgid=62010388000012语句，</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 01:33:48</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2932</span></span>  </p> </article><article class="excerpt"> <header> <a title="Tomcat" class="label label-important zj-del-target" href="/category/50">Tomcat<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/2031" title="tomcat配置数据源" target="_blank" onclick="return recordId('',)">tomcat配置数据源 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/2031" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/20.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/2031';}else{window.open('/article/2031');}" style="cursor: pointer;">1.修改conf下的context.xml，在<context>标签中添加：1<Resource2name="jdbc/soa"3auth="Container"4type="javax.sql.DataSource"5maxActive="100"6maxIdle="30"7maxWait="10000"8username="soa"9password="soa"10driverClassName="oracle.jdbc.driver.OracleDr</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 01:32:45</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2932</span></span>  </p> </article><article class="excerpt"> <header> <a title="数据库相关" class="label label-important zj-del-target" href="/category/32">数据库相关<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/1158" title="开机自动连接宽带程序" target="_blank" onclick="return recordId('',)">开机自动连接宽带程序 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/1158" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/6.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/1158';}else{window.open('/article/1158');}" style="cursor: pointer;">假期回家，正好赶上家里装宽带（以前都是用路由器和别人家合着用），说实话我还是第一次使用adsl宽带，对这东西还真不熟悉，顺便查了一下什么是adsl，简单的讲就是用频分技术把普通的电话线分成三个独立的信道，分别用于打电话，网络上行，网络下行，互不影响；这个功能我想主要是由所谓的“猫”完成的吧！在实际使用时发现每次上网前都要先连接，我想了一下：现在的adsl宽带都是不限时、不限流量的，没必要节省，所以我们完全有必要开机就连上宽带，省去每次都去手动连接的繁琐。说</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 01:32:25</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2932</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/14509" title="《Linux内核修炼之道》精华分享与讨论（9）——" target="_blank" onclick="return recordId('',)">《Linux内核修炼之道》精华分享与讨论（9）—— </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/14509" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/15.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/14509';}else{window.open('/article/14509');}" style="cursor: pointer;">推荐博文：Linux内核“问题门”——学习问题、经验集锦推荐下载：《Linux内核修炼之道》精华版之方法论“世界上最缺的不是金钱，而是资源。”当我在一份报纸上看到这句大大标题时，我的第一反应是——作者一定是个自然环保主义者，然后我在羞愧得反省自身的同时油然生出一股对这样的无产主义理想者无比崇敬的情绪来。于是，我继续往下看，“因此在XXX还未正式面市之时，前来咨询的客户已经不少，这些有眼光的购房者明白，谁能在目前最好的购房</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 22:16:48</span></span> 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