Sun, 04 May 2008 00:09:00 GMTDevoted to Open thoughts forever --- Java, Groovy, Python, Linux, Mac OS X, etchttp://blog.csdn.net/javafuns/http://blog.csdn.net/javafuns/archive/2008/05/04/2374958.aspxhttp://blog.csdn.net/javafuns/comments/2374958.aspx0http://blog.csdn.net/javafuns/comments/commentRss/2374958.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=2374958说到排斥性过滤器，大家会一头雾水，搞不明白这其中含义。何为排斥性(exclude)过滤器呢，其实是本人自己定义出来的，呵呵。&lt;br /&gt; 排斥性过滤器是相对于规范所定义的Filter而言的，Java EE 规范中的过滤器是对web.xml中所列出的url进行过滤，而排斥性过滤器则恰恰相反，不对这些web.xml中列出的url执行过滤，而是对除这些url外的url进行过滤逻辑操作。&lt;br /&gt; 作为一个多年的Java开发人员，在实际开发中遇到这种情况，这便是有此动机的原因。下面就讲讲这个exclude filter的原理，其实很简单。在拦截所有请求时，我们检查这些请求的url是否在url列表之内，如果在，那么就不进行过滤逻辑，直接调用chain.doFilter(xxx)；否则的话，我们就执行一些过滤逻辑操作，然后再chain.doFilter(xxx)。&lt;br /&gt; 其中，检查url分2种方式：精确匹配(equals)和模糊匹<img src ="http://blog.csdn.net/javafuns/aggbug/2374958.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628483/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628483/art01.gif" onerror="this.style.display='none'" /></a></p>Sun, 04 May 2008 08:09:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2008/05/04/2374958.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2008/05/04/2374958.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2008/05/04/2374958.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628483/1207101http://blog.csdn.net/javafuns/archive/2008/03/15/2184794.aspxhttp://blog.csdn.net/javafuns/comments/2184794.aspx0http://blog.csdn.net/javafuns/comments/commentRss/2184794.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=2184794在使用BigDecimal进行比较的时候，会发现new BigDecimal(0.1)与new BigDecimal(”0.1″)不相等<img src ="http://blog.csdn.net/javafuns/aggbug/2184794.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628484/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628484/art01.gif" onerror="this.style.display='none'" /></a></p>Sat, 15 Mar 2008 18:29:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2008/03/15/2184794.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2008/03/15/2184794.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2008/03/15/2184794.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628484/1207101http://blog.csdn.net/javafuns/archive/2007/12/22/1958490.aspxhttp://blog.csdn.net/javafuns/comments/1958490.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1958490.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1958490Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly.<img src ="http://blog.csdn.net/javafuns/aggbug/1958490.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628485/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628485/art01.gif" onerror="this.style.display='none'" /></a></p>Sat, 22 Dec 2007 21:25:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/12/22/1958490.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/12/22/1958490.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/12/22/1958490.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628485/1207101http://blog.csdn.net/javafuns/archive/2007/11/25/1901903.aspxhttp://blog.csdn.net/javafuns/comments/1901903.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1901903.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1901903经常会遇到端口号被某个程序占用的情况，这时候第一想法是看看到底是哪个程序占用的。有一些专用的小工具可以查看，其实用netstat也可以做到的......<img src ="http://blog.csdn.net/javafuns/aggbug/1901903.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628486/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628486/art01.gif" onerror="this.style.display='none'" /></a></p>Mon, 26 Nov 2007 04:31:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/11/25/1901903.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/11/25/1901903.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/11/25/1901903.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628486/1207101http://blog.csdn.net/javafuns/archive/2007/11/17/1890126.aspxhttp://blog.csdn.net/javafuns/comments/1890126.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1890126.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1890126beyond 《wake up》<img src ="http://blog.csdn.net/javafuns/aggbug/1890126.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628487/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628487/art01.gif" onerror="this.style.display='none'" /></a></p>Sun, 18 Nov 2007 01:19:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/11/17/1890126.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/11/17/1890126.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/11/17/1890126.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628487/1207101http://blog.csdn.net/javafuns/archive/2007/11/17/1889970.aspxhttp://blog.csdn.net/javafuns/comments/1889970.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1889970.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1889970本文讲解了一个简单的 servlet 容器是怎样工作的. 将会给您展示2个 servlet 容器应用程序; 第一个尽可能简单, 第二个则在第一个基础上做了美化. 我不想把第一个容器做的完美的唯一原因是让它尽可能保持简单. 更多复杂的 servlet 容器, 包括 Tomcat 4 和 5, 则在 How Tomcat Works 的其它章节讨论. servlet container 既能处理简单的 servlet, 也能处理静态资源. 你可以使用 PrimitiveServlet（位于 webroot/ 目录下）测试这个容器. 更复杂的servlet已经超出了这个容器的能力, 但你可以从 How Tomcat Works 这本书中学习到怎样建立更完善的 servlet container. <img src ="http://blog.csdn.net/javafuns/aggbug/1889970.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628488/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628488/art01.gif" onerror="this.style.display='none'" /></a></p>Sat, 17 Nov 2007 23:36:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/11/17/1889970.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/11/17/1889970.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/11/17/1889970.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628488/1207101http://blog.csdn.net/javafuns/archive/2007/11/17/1889950.aspxhttp://blog.csdn.net/javafuns/comments/1889950.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1889950.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1889950web server 也叫 Hypertext Transfer Protocol (HTTP) server, 因为它使用的是HTTP协议与客户端通信, 通常是指那些 web 浏览器. 基于 Java 的 web server 使用2个重要的类, java.net.Socket 和 java.net.ServerSocket, 进行HTTP消息通信. 因此,本文先讨论HTTP协议和这2个类. 之后, 我会讲解本书附带的一个简单的 web server 程序.<img src ="http://blog.csdn.net/javafuns/aggbug/1889950.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628489/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628489/art01.gif" onerror="this.style.display='none'" /></a></p>Sat, 17 Nov 2007 23:15:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/11/17/1889950.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/11/17/1889950.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/11/17/1889950.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628489/1207101http://blog.csdn.net/javafuns/archive/2007/11/03/1865303.aspxhttp://blog.csdn.net/javafuns/comments/1865303.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1865303.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1865303手把手教你把Vim改装成一个IDE编程环境<img src ="http://blog.csdn.net/javafuns/aggbug/1865303.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628490/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628490/art01.gif" onerror="this.style.display='none'" /></a></p>Sun, 04 Nov 2007 04:24:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/11/03/1865303.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/11/03/1865303.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/11/03/1865303.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628490/1207101http://blog.csdn.net/javafuns/archive/2007/11/03/1865262.aspxhttp://blog.csdn.net/javafuns/comments/1865262.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1865262.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1865262服务器集群的历史，意义，及session机制<img src ="http://blog.csdn.net/javafuns/aggbug/1865262.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628491/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628491/art01.gif" onerror="this.style.display='none'" /></a></p>Sun, 04 Nov 2007 03:38:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/11/03/1865262.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/11/03/1865262.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/11/03/1865262.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628491/1207101http://blog.csdn.net/javafuns/archive/2007/09/04/1771535.aspxhttp://blog.csdn.net/javafuns/comments/1771535.aspx0http://blog.csdn.net/javafuns/comments/commentRss/1771535.aspxhttp://tb.blog.csdn.net/TrackBack.aspx?PostId=1771535一篇非常不错的文章，介绍垃圾收集的发展史，形象地解释了垃圾收集的算法。<img src ="http://blog.csdn.net/javafuns/aggbug/1771535.aspx" width = "1" height = "1" /><p class="fswww1"><a href="http://www1.feedsky.com/r/l/csdn.net/javafuns/236628492/art01.html" target="_blank"><img border="0" ismap="ismap" src="http://www1.feedsky.com/r/i/csdn.net/javafuns/236628492/art01.gif" onerror="this.style.display='none'" /></a></p>Tue, 04 Sep 2007 19:52:00 +0800javafunshttp://blog.csdn.net/javafuns/archive/2007/09/04/1771535.aspx#Feedbackhttp://blog.csdn.net/javafuns/archive/2007/09/04/1771535.aspxjavafunshttp://blog.csdn.net/javafuns/archive/2007/09/04/1771535.aspxhttp://blog.csdn.net/javafuns/feed.aspxcsdn.net/javafuns/~1207126/236628492/1207101