�??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#20122;&#27954;&#39318;&#39029;&#22269;&#20135;&#31934;&#21697;&#19997;&#34972;&#44;&#20122;&#27954;&#31934;&#21697;&#39640;&#28165;&#22269;&#20135;&#19968;&#32447;&#20037;&#20037;&#44;&#26085;&#38889;&#33394;&#35270;&#39057;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#20122;&#27954;</title><link>http://www.tkk7.com/sean/category/35.html</link><description>Read me, read Sean.</description><language>zh-cn</language><lastBuildDate>Sun, 09 Mar 2014 10:25:17 GMT</lastBuildDate><pubDate>Sun, 09 Mar 2014 10:25:17 GMT</pubDate><ttl>60</ttl><item><title>IntelliJ IDEA 常用快捷�?/title><link>http://www.tkk7.com/sean/archive/2014/03/09/410781.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sun, 09 Mar 2014 05:38:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2014/03/09/410781.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/410781.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2014/03/09/410781.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/410781.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/410781.html</trackback:ping><description><![CDATA[<br />
整理一�?IntelliJ IDEA 最常用的快捷键�Q�按照便于记忆的方式排列�Q?br />
<br />
<pre>
Ctrl-N&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Class...&nbsp;(find&nbsp;by&nbsp;name)
Ctrl-Shift-N&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;File...&nbsp;(find&nbsp;by&nbsp;name)
Ctrl-Shift-Alt-N&nbsp;&nbsp;&nbsp;&nbsp;Symbol...&nbsp;(find&nbsp;by&nbsp;name)
Ctrl-G&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Line...&nbsp;(goto&nbsp;line)
Ctrl-H&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Type&nbsp;hierarchy&nbsp;(hierarchy)
Ctrl-Shift-H&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method&nbsp;hierarchy&nbsp;(hierarchy)
Ctrl-Alt-H&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Call&nbsp;hierarchy&nbsp;(hierarchy)
Ctrl-Q&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Quick&nbsp;documentation
Ctrl-Alt-I&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Auto-indent&nbsp;lines&nbsp;(indent)
Ctrl-Alt-L&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reformat&nbsp;code&nbsp;(line&nbsp;up)
Ctrl-Alt-O&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Optimize&nbsp;imports&nbsp;(optimize)
Ctrl-/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Comment&nbsp;with&nbsp;line&nbsp;comment&nbsp;(//)
Ctrl-Shift-/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Comment&nbsp;with&nbsp;block&nbsp;comment&nbsp;(/*...*/)
Ctrl-W&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Select&nbsp;word&nbsp;or&nbsp;block&nbsp;(word)
Ctrl-D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Copy&nbsp;line&nbsp;(duplicate&nbsp;line,&nbsp;yyp)
Ctrl-X&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cut&nbsp;line&nbsp;(dd)
Ctrl-U&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Uppercase/lowercase&nbsp;(upper)
Ctrl-J&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insert&nbsp;live&nbsp;template
Ctrl-Alt-J&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Surround&nbsp;with&nbsp;live&nbsp;template
Ctrl-Alt-T&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Surround&nbsp;with&nbsp;(template)
Ctrl-Shift-J&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Join&nbsp;lines&nbsp;(join)
Ctrl-E&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Recent&nbsp;files&nbsp;(editions)
Ctrl-Shift-E&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Recently&nbsp;changed&nbsp;files&nbsp;(editions)
Alt-Shift-C&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Recent&nbsp;changes&nbsp;(changes)
Ctrl-B&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Delcaration
Ctrl-Shift-B&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Type&nbsp;declaration
Ctrl-Alt-B&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Implementation(s)
Ctrl-P&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Parameter&nbsp;info&nbsp;(parameter)
Ctrl-Space&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic&nbsp;completion
Ctrl-Shift-Space&nbsp;&nbsp;&nbsp;&nbsp;Smart&nbsp;completion
Ctrl-Alt-Space&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Completion&nbsp;lookup
Alt-Enter&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Auto-complete
Alt-Insert&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Generate...
Ctrl-Shift-Up/Down&nbsp;&nbsp;Move&nbsp;statement&nbsp;up/down
Alt-Shift-Up/Down&nbsp;&nbsp;&nbsp;Move&nbsp;line&nbsp;up/down
Ctrl-Up/Down&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Scroll&nbsp;up/down
Alt-Up/Down&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Previous/next&nbsp;method
F2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Next&nbsp;highlighted&nbsp;error
Shift-F2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Previous&nbsp;highlighted&nbsp;error
Ctrl-F&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Find
Ctrl-R&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Replace
F3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Next&nbsp;match
Shift-F3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Previous&nbsp;match
F4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Jump&nbsp;to&nbsp;source
Ctrl-Alt-Shift-T&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;this
F5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;copy
F6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;move
Ctrl-F6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;change&nbsp;signature
Shift-F6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;rename
Alt-Delete&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;safe&nbsp;delete
Ctrl-Alt-V&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;extract&nbsp;variable
Ctrl-Alt-F&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;extract&nbsp;field
Ctrl-Alt-P&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;extract&nbsp;parameter
Ctrl-Alt-M&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;extract&nbsp;method
Ctrl-Alt-N&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Refactor&nbsp;inline
</pre>
<img src ="http://www.tkk7.com/sean/aggbug/410781.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2014-03-09 13:38 <a href="http://www.tkk7.com/sean/archive/2014/03/09/410781.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[Tips] Windows环境下Apache最基本的调优方�?/title><link>http://www.tkk7.com/sean/archive/2011/08/02/355618.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Tue, 02 Aug 2011 13:04:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2011/08/02/355618.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/355618.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2011/08/02/355618.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/355618.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/355618.html</trackback:ping><description><![CDATA[<p>
今天�q�程支持同事在Windows环境调优Apache服务器性能�Q�记录在此，供需要的朋友参考�?/p>
<p>
Java EE应用�Q�同旉����|�在两个Tomcat(5.5.27)实例上，前面放了个Apache(httpd-2.2.19-win32-x86-no_ssl)�Q�通过mod_jk(1.2.32)做负载均衡，同一台物理服务器�Q�操作系�l��ؓ64位的Windows Server 2003 SP2。现象是60+客户端，�q�_��每个客户端每�U�请求数2�ơ，单个��h��正常响应旉����?00ms以内�Q�即每秒冲进�?20个请求，�q�发量最多在60上下�Q�Apache���已不堪"�?负，静态资源响应时间都���过10s�Q�同时Tomcat和数据库服务器均正常。凭我的�l�验�Q�同��L��压力直接压到Tomcat也不至于�q�么隄���。看来问题出在Apache�?/p>
<p>
首先修改httpd.conf配置文�g�Q�打开status模块�Q?/p>
<p>
<code>
LoadModule status_module modules/mod_status.so<br/>
&lt;Location /status&gt;<br/>
&nbsp;&nbsp;SetHandler server-status<br/>
&nbsp;&nbsp;Order deny,allow<br/>
&nbsp;&nbsp;Deny from all<br/>
&nbsp;&nbsp;Allow from 127.0.0.1 #需要的话也可放开为all<br/>
&lt;/Location&gt;
</code></p>
<p>
�q�样我们���p��通过/status��面查看服务器当前的状态信息，�l�果观察到worker(即线�E?��C���?4�Q�坑爹啊�Q�难怪撑不住。我记得以前Windows下面的Apache默认�U�程数没�q�么���的。找准问题，接下来就好办了：</p>
<p>
<code>
&lt;IfModule mpm_winnt.c&gt;<br/>
&nbsp&nbsp;ThreadsPerChild 300<br/>
&nbsp;&nbsp;MaxRequestsPerChild 0<br/>
&lt;/IfModule&gt;
</code></p>
<p>
�E�微解释一下：mpm_winnt.c是Apache为Windows NT提供的MPM (Multi-Processing Module)�Q�对应到Linux环境下，则有prefork.c(多进�E?每进�E?个线�E?和worker.c(多进�E?多线�E?两种MPM可选。Windows下面只会有父与子两个�q�程�Q�因此单个子�q�程能同时�v多少�U�程(ThreadsPerChild)���成了调优的关键。另一个参数MaxRequestsPerChild的含义是单个子进�E�篏计最多处理到���个��h���Q�超�q�该值则退出重启，�q�是��Z��防止内存泄露慢慢拖垮整个服务器而做的防御性措施，0表示不做此限制�?/p>
<p>
新配�|�上�U�后�Q�客��L��数量��利冲上200+。Case closed.</p>
<img src ="http://www.tkk7.com/sean/aggbug/355618.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2011-08-02 21:04 <a href="http://www.tkk7.com/sean/archive/2011/08/02/355618.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>"上�v"是如何变�?涓婃�?的？</title><link>http://www.tkk7.com/sean/archive/2011/03/29/347243.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Tue, 29 Mar 2011 15:50:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2011/03/29/347243.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/347243.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2011/03/29/347243.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/347243.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/347243.html</trackback:ping><description><![CDATA[<br/ />
<p>今天帮同事解决一个邮件�ؕ码的问题�Q�简��C��此�?
</p>
<p>邮�g正文��׃��贴了�Q�有一�D�从上下文判断明昑ֺ�该是"上�v"�Q�却昄���成了"�?.."�Q�于是自然而然的拿�?�?字和"�?字来分析�?

</p>
<p>通过���单的Groovy脚本对这两个汉字分别按gbk和utf-8�~�码�Q��ƈ���得到的byte[]转换成二�q�制表示输出如下�Q?

</p>
<p><code>
== �?==<br/ />
11001001 11001111<br/ />   
11100100 10111000 10001010 <br/ />   
== �?==<br/ />
11100100 10111000<br/ />   
11100110 10110110 10010011<br/ />    
</code>
</p>
<p>注意"�?字的�W?排前两组�?�?字第1排的两组byte正好相同�Q�于是问题迎刃而解�Q��ؕ码是�׃��邮�g以utf-8�~�码后被错误的以gbk解码�Q�随后又重新�~�码成utf-8�Q�造成的�?/p>
<p>关键代码�Q?/p>
<p><code>
void showBytes(String input) {<br/ />
&nbsp;&nbsp;println("== " + input + " ==")<br/ />
&nbsp;&nbsp;b = input.getBytes("gbk")<br/ />
&nbsp;&nbsp;b.each { print Integer.toBinaryString(it).substring(24) + ' ' }<br/ />
&nbsp;&nbsp;println()<br/ />
&nbsp;&nbsp;b = input.getBytes("utf8")<br/ />
&nbsp;&nbsp;b.each { print Integer.toBinaryString(it).substring(24) + ' ' }<br/ />
&nbsp;&nbsp;println()<br/ />
}<br/ />
</code>
</p>




<img src ="http://www.tkk7.com/sean/aggbug/347243.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2011-03-29 23:50 <a href="http://www.tkk7.com/sean/archive/2011/03/29/347243.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>如何让统一版本的Eclipse RCP应用同时支持多个�q�_��</title><link>http://www.tkk7.com/sean/archive/2011/01/30/343769.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sun, 30 Jan 2011 04:17:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2011/01/30/343769.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/343769.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2011/01/30/343769.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/343769.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/343769.html</trackback:ping><description><![CDATA[<br/ /><p>和Swing应用的直接跨�q�_��不同�Q�SWT/RCP应用要想同时支持不同�q�_���Q�需要做些特�D�的配置�Q�不�q��ƈ不复杂，记录在此�Q�希望能帮到有需要的朋友。目前win32�?2位Linux�?4位Linux和Mac OS X基本上就覆盖了所有主���的桌面操作�pȝ���Q�本文将以同时支持这四种OS��Z��来进行讲解�?/p>
<p>首先是下载对应版本的RCP框架在不同操作系�l�的插�g�Q�将它们攑֜�同一个plugins目录�Q�比如你可以用win32为基����Q�然后添加针对其他��^台的如下插�g: </p>
<p>org.eclipse.core.filesystem<br/ />org.eclipse.core.filesystem.win32.x86<br/ />org.eclipse.core.filesystem.linux.x86<br/ />org.eclipse.core.filesystem.linux.x86_64<br/ />org.eclipse.core.filesystem.macosx</p>
<p>org.eclipse.core.net<br/ />org.eclipse.core.net.win32.x86<br/ />org.eclipse.core.net.linux.x86</p>
<p>org.eclipse.core.resources<br/ />org.eclipse.core.resources.win32.x86</p>
<p>org.eclipse.equinox.launcher<br/ />org.eclipse.equinox.launcher.win32.win32.x86<br/ />org.eclipse.equinox.launcher.gtk.linux.x86<br/ />org.eclipse.equinox.launcher.gtk.linux.x86_64<br/ />org.eclipse.equinox.launcher.carbon.macosx</p>
<p>org.eclipse.equinox.security<br/ />org.eclipse.equinox.security.win32.x86<br/ />org.eclipse.equinox.security.macosx</p>
<p>org.eclipse.swt<br/ />org.eclipse.swt.win32.win32.x86<br/ />org.eclipse.swt.gtk.linux.x86<br/ />org.eclipse.swt.gtk.linux.x86_64<br/ />org.eclipse.swt.carbon.macosx</p>
<p>接下来将不同�q�_��下的eclipse可执行文�?Windows下面是eclipe.exe�Q�Linux下是eclipse�Q�Mac OS X下面是Eclipse.app)攑ֈ�不同的子目录下，当然�Q�如果你的RCP应用有别的名�U�ͼ�也可以重命名eclipse可执行文�Ӟ��按照不同�q�_��的规范更换图标，然后修改.ini文�g让它�?startup�?startup.libraray参数指向相对路径中正���版本的插�g卛_���?/p>
<p>最后分享一下我们��Y仉����|�的机制: 按照前面介绍的方式打包的应用�E�序�Q�交到用��h��里�ƈ不是很友好，因�ؓ需要他/她自己再做一�ơ判断，当前的操作系�l�是什么，然后打开不同的目录去点击不同的可执行文�g。我们的做法是单独提供一个Swing�E�序�Q�在客户端自动判断OS�Q�然后自动调用不同版本的可执行文�Ӟ��同时�Q�这个Swing�E�序被做成Java Web Start�Q�把整个RCP客户端的下蝲和同步也处理掉，�q�样�Q�对用户而言�Q�整个过�E�就透明了，只需要一个JNLP�Q�剩下的工作完全自动化�?/p>

<img src ="http://www.tkk7.com/sean/aggbug/343769.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2011-01-30 12:17 <a href="http://www.tkk7.com/sean/archive/2011/01/30/343769.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Java命��o行实用工具jps和jstat</title><link>http://www.tkk7.com/sean/archive/2011/01/27/343620.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Thu, 27 Jan 2011 04:04:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2011/01/27/343620.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/343620.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2011/01/27/343620.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/343620.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/343620.html</trackback:ping><description><![CDATA[<br/ /><p>在Linux或其他UNIX和类UNIX环境下，ps命��o惛_��大家都不陌生�Q�我�怿�也有不少同学写过 ps aux | grep java | grep -v grep | awk '{print $2}' �q�样的管道命令来扑և�Java�q�程的pid。常�a�道，Java�q����真的"跨��^�?�Q�它自己���是�q�_��。作为��^収ͼ�当然也有些基本的工具�Q�让我们可以用更���单、更�l�一�Q�同时又是非侵入的方式来查询�q�程相关信息。今天我们就来认识一下其中的两个�?/p>
<p><strong>jps</strong></p>
<p>��֐�思义�Q�它对应到UNIX的ps命��o。用法如�? </p>
<p>jps [ options ] [ hostid ]</p>
<p>其中�Q�options可以�?-q (安静) -m (输出传递给main�Ҏ��的参�? -l (昄���完整路径) -v (昄���传递给JVM的命令行参数) -V (昄���通过flag文�g传递给JVM的参�? -J (和其他Java工具�c�M��用于传递参数给命��o本��n要调用的java�q�程)�Q�hostid是主机id�Q�默认localhost�?/p>
<p><strong>jstat</strong></p>
<p>用于输出�l�定java�q�程的统计信息。用法如�? </p>
<p>jstat -options 可以列出当前JVM版本支持的选项�Q�常见的�?-class (�c�d��载器) -compiler (JIT) -gc (GC堆状�? -gccapacity (各区大小) -gccause (最�q�一�ơGC�l�计和原�? -gcnew (新区�l�计) -gcnewcapacity (新区大小) -gcold (老区�l�计) -gcoldcapacity (老区大小) -gcpermcapacity (�怹�区大��? -gcutil (GC�l�计汇�? -printcompilation (HotSpot�~�译�l�计)</p>
<p>假定你要监控的Java�q�程��h��12345�Q�那�?br />
jstat -gcutil -t 12345 200 300 卛_���?00毫秒�q�箋打印300�ơ带有时间戳的GC�l�计信息�?/p>
<p>���单解释一�? -gcutil是传入的option�Q�必选，-t是打印时间戳�Q�是以目标JVM启动旉�������v点计���的�Q�可选；12345是vmid/pid�Q�和我们从jps拿到的是一��L���Q�必选；200是监控时间间隔，可选，不提供就意味着单次输出�Q?00是最大输出次敎ͼ�可选，不提供且监控旉���间隔有值的话，���是无限期打��C��厅R�?/p>
<p>具体输出明细的解释请参考官�Ҏ���?<a  target="_blank">http://download.oracle.com/javase/6/docs/technotes/tools/share/jstat.html</a></p>

<img src ="http://www.tkk7.com/sean/aggbug/343620.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2011-01-27 12:04 <a href="http://www.tkk7.com/sean/archive/2011/01/27/343620.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>用Scala解Hanoi�?/title><link>http://www.tkk7.com/sean/archive/2009/11/23/303374.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Mon, 23 Nov 2009 11:20:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2009/11/23/303374.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/303374.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2009/11/23/303374.html#Feedback</comments><slash:comments>3</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/303374.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/303374.html</trackback:ping><description><![CDATA[<p>到处吹嘘Scala很长旉���了，却一直没有在自己的blog上增加过��M��相关内容�Q�今天就来补一补。当�Ӟ��Scala的基本特性就不多废话了，�|�上已经有相当多的资料，如果懒得google�Q�只想看完本文，那么你只需要知道它是一门以JVM为目标运行环境的静态编�E�语�a�(当然�Q�Scala官方也有.NET版，但已不是光����?�Q�同时具备面向对象和函数式编�E�语�a�的特炏V��本文将通过一个简单的�C�Z���Q�展�C�Scala的FP能力�Q�其中十分heavy的用��C��implicit隐式转换和模式匹配�?/p>
<p>代码是从guithub的gist上抄的，���单改了改�Q�原始代码见: <a  target="_blank">http://gist.github.com/66925</a></p>
<p>
</p>
<div style="background-color: #eeeeee; font-size: 13px; border-left-color: #cccccc; padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; "><!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><span style="color: #0000FF; ">import</span><span style="color: #000000; ">&nbsp;scala.reflect.Manifest<br />
&nbsp;&nbsp;<br />
def&nbsp;simpleName(m:Manifest[_]):String&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;{<br />
&nbsp;&nbsp;val&nbsp;name&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;m.toString<br />
&nbsp;&nbsp;name.substring(name.lastIndexOf(</span><span style="color: #000000; ">'</span><span style="color: #000000; ">$</span><span style="color: #000000; ">'</span><span style="color: #000000; ">)</span><span style="color: #000000; ">+</span><span style="color: #000000; ">1</span><span style="color: #000000; ">)<br />
}<br />
&nbsp;&nbsp;<br />
trait&nbsp;Num<br />
</span><span style="color: #0000FF; ">final</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">class</span><span style="color: #000000; ">&nbsp;Succ[Pre</span><span style="color: #000000; ">&lt;</span><span style="color: #000000; ">:Num]&nbsp;</span><span style="color: #0000FF; ">extends</span><span style="color: #000000; ">&nbsp;Num<br />
</span><span style="color: #0000FF; ">final</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">class</span><span style="color: #000000; ">&nbsp;_1&nbsp;</span><span style="color: #0000FF; ">extends</span><span style="color: #000000; ">&nbsp;Num<br />
type&nbsp;_2&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;Succ[_1]<br />
type&nbsp;_3&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;Succ[_2]<br />
type&nbsp;_4&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;Succ[_3]<br />
&nbsp;<br />
</span><span style="color: #0000FF; ">case</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">class</span><span style="color: #000000; ">&nbsp;Move[N</span><span style="color: #000000; ">&lt;</span><span style="color: #000000; ">:Num,A,B,C]()<br />
<br />
implicit&nbsp;def&nbsp;move1[A,B,C](implicit&nbsp;a:Manifest[A],&nbsp;b:Manifest[B])&nbsp;:&nbsp;Move[_1,A,B,C]&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;{<br />
&nbsp;&nbsp;System.out.println(</span><span style="color: #000000; ">"</span><span style="color: #000000; ">Move&nbsp;from&nbsp;</span><span style="color: #000000; ">"</span><span style="color: #000000; ">&nbsp;</span><span style="color: #000000; ">+</span><span style="color: #000000; ">&nbsp;simpleName(a)&nbsp;</span><span style="color: #000000; ">+</span><span style="color: #000000; ">&nbsp;</span><span style="color: #000000; ">"</span><span style="color: #000000; ">&nbsp;to&nbsp;</span><span style="color: #000000; ">"</span><span style="color: #000000; ">&nbsp;</span><span style="color: #000000; ">+</span><span style="color: #000000; ">&nbsp;simpleName(b))<br />
&nbsp;&nbsp;</span><span style="color: #0000FF; ">null</span><span style="color: #000000; "><br />
}<br />
&nbsp;<br />
implicit&nbsp;def&nbsp;moveN[P</span><span style="color: #000000; ">&lt;</span><span style="color: #000000; ">:Num,A,B,C](implicit&nbsp;m1:Move[P,A,C,B],&nbsp;m2:Move[_1,A,B,C],&nbsp;m3:Move[P,C,B,A])&nbsp;:&nbsp;Move[Succ[P],A,B,C]&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">null</span><span style="color: #000000; "><br />
&nbsp;&nbsp;<br />
def&nbsp;run[N</span><span style="color: #000000; ">&lt;</span><span style="color: #000000; ">:Num,A,B,C](implicit&nbsp;m:Move[N,A,B,C])&nbsp;</span><span style="color: #000000; ">=</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">null</span><span style="color: #000000; "><br />
&nbsp;&nbsp;<br />
</span><span style="color: #0000FF; ">case</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">class</span><span style="color: #000000; ">&nbsp;Left()<br />
</span><span style="color: #0000FF; ">case</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">class</span><span style="color: #000000; ">&nbsp;Center()<br />
</span><span style="color: #0000FF; ">case</span><span style="color: #000000; ">&nbsp;</span><span style="color: #0000FF; ">class</span><span style="color: #000000; ">&nbsp;Right()<br />
&nbsp;&nbsp;<br />
run[_3,Left,Right,Center]<br />
</span></div>
<p>&nbsp;</p>
<p>�q�段代码解决的是�l�典的汉诺塔问题�Q�通过一根中柱，���左�׃��64个大���依�ơ叠加的圆盘全部�U�d��到右柱，要求整个�q�程中每�ơ只能移动一个圆盘，且每个圆盘只能独立占据一�Ҏ��子或是叠加在比自�w�更大的圆盘上�?/p>
<p>���单分析一下就知道�Q�这是一个递归问题(FP的英雄特�?�Q?/p>
<ul>
    <li>当只�?个圆盘时�Q�不用通过中柱�Q�直接可以从左柱�U�d��到右柱；</li>
    <li>当有2个圆盘时�Q�将���盘�U�d����C��柱，剩下的大盘移动到��x���Q�再从中柱把���盘�U�d��到右柱；</li>
    <li>当有3个圆盘时�Q�先�U�d��2个圆盘到中柱�Q�再�U�d��大盘到右柱，再移�?个圆盘到��x���Q?/li>
    <li>...</li>
</ul>
<p>很容易发��C��个pattern�Q�那���是�U�d��N(N&gt;1)个圆盘，可以通过以下三个步骤�Q?/p>
<ol>
    <li>�U�d��N-1个圆盘，从左柱到中柱�Q?/li>
    <li>�U�d��剩下�?个圆盘，从左柱到��x���Q?/li>
    <li>�U�d��N-1个圆盘，从中柱到��x���?/li>
</ol>
<p>在解释代码之前，先说说Scala的implicit隐式转换�Q�这是一个非常powerful的idea�Q�当Scala�~�译器发现类型不匚w���Q�它不会直接fail�Q�而是���试从代码中指定的，在scope内的implicit转换定义�Q�来替换问题对象或表辑ּ�以满���类型要求，当然�Q��ؓ了避免歧义，同一时刻Scala需要找到唯一的一个满���x��件的implicit定义�?/p>
<p>我们的代码首先定义了一个取得友好类名的�Ҏ���Q�不��L���I�它�Q�然后定义了一个正整数的序列，也不��L���I�它了，你只需要当作他们是正整数就好，接触�q�FP的同学应该对此类定义不陌生，接下来定义了如下3个支持implicit传入参数的方法：</p>
<ol>
    <li>implicit def move1[A,B,C](implicit a:Manifest[A], b:Manifest[B]) : Move[_1,A,B,C]</li>
    <li>implicit def moveN[P&lt;:Num,A,B,C]( implicit <br />
    m1:Move[P,A,C,B], <br />
    m2:Move[_1,A,B,C], <br />
    m3:Move[P,C,B,A]<br />
    ) : Move[Succ[P],A,B,C]</li>
    <li>def run[N&lt;:Num,A,B,C](implicit m:Move[N,A,B,C])</li>
</ol>
<p>含义分别是：</p>
<ol>
    <li>当需要Move[_1,A,B,C]值时�Q�可以找我帮�?我有个side-effect�Q�那���是输出�U�d��指��o)�Q?/li>
    <li>当需要Move[Succ[P],A,B,C]�Ӟ��可以找我帮忙�Q?/li>
    <li>�q�行我，我接受Move[N,A,B,C]�c�d��的参数�?/li>
</ol>
<p>���单说明：Scala用[]表示�c�d��参数�Q�区别于Java�?lt;&gt;�Q�另外，Scala的类型声明在变量/函数定义之后。Move[_,A,B,C]的含义是通过C�Q�从A�U�d��圆盘到B�?/p>
<p>我们来模拟运行一下，��Z��演示效果�Q�用一个中�{�复杂的数目�Q?个圆盘，从Left�U�d��到Right�?/p>
<p>run[_3,Left,Right,Center]�Q�对应Move[Succ[_2],Left,Right,Center]�Q�于是展开成三个Move�Q?/p>
<p>Move[_2,Left,Center,Right]即Move[Succ[_1],Left,Center,Right]<br />
Move[_1,Left,Right,Center]<br />
Move[_2,Center,Right,Left]即Move[Succ[_1],Center,Right,Left]<br />
</p>
<p>然后�l�箋展开Move[_2,Left,Center,Right]和Move[_2,Center,Right,Left]�Q�得刎ͼ�</p>
<p>Move[_1,Left,Right,Center]<br />
Move[_1,Left,Center,Right]<br />
Move[_1,Right,Center,Left]<br />
--------------------------<br />
Move[_1,Left,Right,Center]<br />
--------------------------<br />
Move[_1,Center,Left,Right]<br />
Move[_1,Center,Right,Left]<br />
Move[_1,Left,Right,Center]<br />
</p>
<p>�q�个时候已�l�全部都匚w��Move[_1,A,B,C]�Q�于是我们很�Ҏ��得到以下输出�Q?/p>
<p>Move from Left to Right<br />
Move from Left to Center<br />
Move from Right to Center<br />
Move from Left to Right<br />
Move from Center to Left<br />
Move from Center to Right<br />
Move from Left to Right<br />
</p>
<p>希望本文能带�l�Scala初学者一些感性认识和启发�?/p>
<p><br />
</p>
<img src ="http://www.tkk7.com/sean/aggbug/303374.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2009-11-23 19:20 <a href="http://www.tkk7.com/sean/archive/2009/11/23/303374.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[Tips] Spring+Hibernate之“暴力”update</title><link>http://www.tkk7.com/sean/archive/2009/01/29/252704.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Thu, 29 Jan 2009 08:54:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2009/01/29/252704.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/252704.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2009/01/29/252704.html#Feedback</comments><slash:comments>4</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/252704.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/252704.html</trackback:ping><description><![CDATA[
		<br />先简单介�l�一下问题的语境�?br /><br />手头有个开发了3�q�的Spring+iBATIS应用�Q�经�怸�层架构）�Q�最�q�尝试用Hibernate实现原有SQLMap版的部分CRUD操作。除开混合事务和其他一些底层配�|�细�?如TransactionAwareDataSource、禁用lazy-load�{?之外�Q�最大的一�?pattern-mismatch"是：Model层和持久层采用了dirty flag机制�Q�即每次INSERT和UPDATE操作�Q�都会根据每个字�D늚�dirty与否军_��是否参加INSERT/UPDATE�Q�而这些dirty flag可以被外部重�|�，所以业务层的代码，�l�常可以看到�c�M���q�样的pattern�Q?br /><br />1- new一个model�c�dƈsetId() �Q�或者在已有的model上重�|�dirty flag�Q?br />2- set需要update的字�D�（通常都只是部分字�D�）<br />3- 丢给DAO层去update<br /><br />最�l�的效果是某张表某个ID的某条记录的某些字段被更��C���Q�而其他字�D�不受媄响，�q�就是我在标题中提到的所�?暴力"update�Q�虽不elegant�Q�但却也���单实用，臛_���?直接"�?br /><br />��Z��让Hibernate版的DAO�Q�默认除Trasient之外全体字段参加INSERT和UPDATE�Q����l�支持这��L��"use-pattern"�Q�除了按照Hibernate的习惯去配置映射和SessionFactory�{�之外，我们需要做一些额外的工作�Q?br /><br />1- 在BO/Entity�c�M���q�加注解<br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 0);">@org.hibernate.annotations.Entity(dynamicInsert</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">, dynamicUpdate</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">)</span></div><br />2- 实现org.hibernate.Interceptor接口的findDirty()�Ҏ���Q�Hibernate提供了一个EmptyInterceptor可以作�ؓ��L���Q�方法签名如下：<br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">[] findDirty(<br />    Object entity, <br />    Serializable id, <br />    Object[] currentState, <br />    Object[] previousState, <br />    String[] propertyNames, <br />    Type[] types<br />);</span></div>�q�回的int[]包含所有应该被认�ؓ是dirty的字�D늃�引，�q�回null表示默认处理�Q�传入的entity是持久对象，字段列表会通过propertyNames参数传给你�?br /><br />3- 注入到Spring的Application Context中，�c�M���q�样�Q?br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">bean </span><span style="color: rgb(255, 0, 0);">id</span><span style="color: rgb(0, 0, 255);">="findDirtyInterceptor"</span><span style="color: rgb(255, 0, 0);"> class</span><span style="color: rgb(0, 0, 255);">="gao.sean.hybrid.interceptor.FindDirtyInterceptor"</span><span style="color: rgb(0, 0, 255);">/&gt;</span><span style="color: rgb(0, 0, 0);"><br /><br /></span><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">bean </span><span style="color: rgb(255, 0, 0);">id</span><span style="color: rgb(0, 0, 255);">="sessionFactory"</span><span style="color: rgb(255, 0, 0);"><br />    class</span><span style="color: rgb(0, 0, 255);">="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);"><br />    <br />    </span><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">property </span><span style="color: rgb(255, 0, 0);">name</span><span style="color: rgb(0, 0, 255);">="entityInterceptor"</span><span style="color: rgb(0, 0, 255);">&gt;&lt;</span><span style="color: rgb(128, 0, 0);">ref </span><span style="color: rgb(255, 0, 0);">bean</span><span style="color: rgb(0, 0, 255);">="findDirtyInterceptor"</span><span style="color: rgb(0, 0, 255);">/&gt;&lt;/</span><span style="color: rgb(128, 0, 0);">property</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);"><br />    <br /></span><span style="color: rgb(0, 0, 255);">&lt;/</span><span style="color: rgb(128, 0, 0);">bean</span><span style="color: rgb(0, 0, 255);">&gt;</span></div><br />在这��L��配置下，业务层的代码���可以���l?暴力"update了�?br /><br /><img src ="http://www.tkk7.com/sean/aggbug/252704.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2009-01-29 16:54 <a href="http://www.tkk7.com/sean/archive/2009/01/29/252704.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[Tips] Spring 2.5.6新特性之packagesToScan</title><link>http://www.tkk7.com/sean/archive/2009/01/29/252685.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Wed, 28 Jan 2009 18:59:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2009/01/29/252685.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/252685.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2009/01/29/252685.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/252685.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/252685.html</trackback:ping><description><![CDATA[
		<br />如果你��用早前版本的Spring�Q�又恰好采用了Annotation注解方式(而非传统XML方式)配置Hibernate对象关系映射�Q�那么在通过org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean配置sessionFactory�Ӟ��你一定对annotatedClasses、annotatedPackages有一�U�说不出的胸��L��感觉�Q�如此以高配�|�性见长的Spring�Q�怎么在这一个小���的环节上就不能做得再灵�z�M��呢，一定要一个个手写Class路径么？<br /><br />估计有不����h无奈选择了从AnnotationSessionFactoryBean�l�承一个自定义的子�c�，自己实现扫描逻辑�Q�找出@Entity注解�q�的�c�L��单配�|�进厅R�?br /><br />Spring 2.5.6里有个不怎么��L��的改�q�，那就是在AnnotationSessionFactoryBean上增加了一个新的方法：<br /><a target="_blank" title="http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/orm/hibernate3/annotation/AnnotationSessionFactoryBean.html#setPackagesToScan(java.lang.String[])" >setPackagesToScan(String[] packagesToScan)</a><br /><br />有了�q�个�Ҏ���Q�我们不再需要自己动手去实现实体�cȝ��扫描了，直接在Spring配置文�g中AnnotationSessionFactoryBean�q�个section上增加类似如下的一个property卛_��(假定你需要加载的实体�c�L��在的包名match�q�个字符�?com.**.bo")�Q?br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">property </span><span style="color: rgb(255, 0, 0);">name</span><span style="color: rgb(0, 0, 255);">="packagesToScan"</span><span style="color: rgb(255, 0, 0);"> value</span><span style="color: rgb(0, 0, 255);">="com.**.bo"</span><span style="color: rgb(0, 0, 255);">/&gt;</span></div><br />你也可以以清单的方式指定多于1条的匚w��字串�Q�如�Q?br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">property </span><span style="color: rgb(255, 0, 0);">name</span><span style="color: rgb(0, 0, 255);">="packagesToScan"</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);"><br />    </span><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">list</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);"><br />        </span><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">value</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);">com.abc.core.bo</span><span style="color: rgb(0, 0, 255);">&lt;/</span><span style="color: rgb(128, 0, 0);">value</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);"><br />        </span><span style="color: rgb(0, 0, 255);">&lt;</span><span style="color: rgb(128, 0, 0);">value</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);">com.abc.auditing.bo</span><span style="color: rgb(0, 0, 255);">&lt;/</span><span style="color: rgb(128, 0, 0);">value</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);"><br />    </span><span style="color: rgb(0, 0, 255);">&lt;/</span><span style="color: rgb(128, 0, 0);">list</span><span style="color: rgb(0, 0, 255);">&gt;</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 0, 255);">&lt;/</span><span style="color: rgb(128, 0, 0);">property</span><span style="color: rgb(0, 0, 255);">&gt;</span></div><br /><img src ="http://www.tkk7.com/sean/aggbug/252685.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2009-01-29 02:59 <a href="http://www.tkk7.com/sean/archive/2009/01/29/252685.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>easyb - Getting Started</title><link>http://www.tkk7.com/sean/archive/2009/01/04/249798.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sun, 04 Jan 2009 14:28:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2009/01/04/249798.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/249798.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2009/01/04/249798.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/249798.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/249798.html</trackback:ping><description><![CDATA[
		<br />从某�U�意义上�Ԍ��easyb���是Groovy版的RSpec�Q�是一个基�?BDD: Behavior-Driven Development"思维方式的测试框架。其作者Andrew Glover是《Groovy in Action》一书的合著者之一。项目的主页在：<br /><br /><a target="_blank" title="http://easyb.org/" >http://easyb.org/</a><br /><br />不多废话了，上代码，一个story大概长成�q�个样子�Q��ؓ了方便大家理解，举一个无比弱智的例子�Q�：<br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 0);">scenario </span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">1+1应该�{�于2</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">, {<br />    given </span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">a和b分别�{�于1</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">, {<br />      a </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 0);">1</span><span style="color: rgb(0, 0, 0);"><br />      b </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 0);">1</span><span style="color: rgb(0, 0, 0);"><br />    }<br />    when </span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">c是a+b的和</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">, {<br />      c </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> a </span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);"> b<br />    }<br />    then </span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">c应该�{�于2</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">, {<br />      c.shouldBe </span><span style="color: rgb(0, 0, 0);">2</span><span style="color: rgb(0, 0, 0);"><br />    }<br />}<br /></span></div><br />如何在Eclipse环境下跑�q�段story脚本�Q�请参考官�Ҏ��档：<br /><a target="_blank" title="http://code.google.com/p/easyb/wiki/ConfiguringEclipseToRunEasyb" >http://code.google.com/p/easyb/wiki/ConfiguringEclipseToRunEasyb</a><br /><br />最后你的输出应该类��|��<br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 0);">Running first easyb story (FirstEasybStory.groovy)<br />Scenarios run: </span><span style="color: rgb(0, 0, 0);">1</span><span style="color: rgb(0, 0, 0);">, Failures: </span><span style="color: rgb(0, 0, 0);">0</span><span style="color: rgb(0, 0, 0);">, Pending: </span><span style="color: rgb(0, 0, 0);">0</span><span style="color: rgb(0, 0, 0);">, Time Elapsed: </span><span style="color: rgb(0, 0, 0);">0.629</span><span style="color: rgb(0, 0, 0);"> sec<br /><br /></span><span style="color: rgb(0, 0, 0);">1</span><span style="color: rgb(0, 0, 0);"> behavior run with no failures<br /></span></div><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/249798.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2009-01-04 22:28 <a href="http://www.tkk7.com/sean/archive/2009/01/04/249798.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Spring 3.0前瞻</title><link>http://www.tkk7.com/sean/archive/2008/12/27/248655.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sat, 27 Dec 2008 09:55:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/12/27/248655.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/248655.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/12/27/248655.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/248655.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/248655.html</trackback:ping><description><![CDATA[
		<br />周末花时间看了Rick Evans在London Spring User Group (LSUG)关于Spring 3.0介绍的视频，地址在这里：<br /><a target="_blank" title="http://java.dzone.com/videos/a-look-forward-spring-30" >http://java.dzone.com/videos/a-look-forward-spring-30</a><br /><br />�Ҏ��Rick的介�l�，Spring 3.0���于明年2月中旬正式发布，其中比较重要的两个亮�Ҏ���Q?br /><br />1- JDK 5���成为Spring 3.0的最低要求，因此很多遗留代码得以重构�Q�更加清�?<br />2- 引入了新的Spring Expression Language (SPEL)用于描述XML和Annotation中的配置信息�?br />�Q�Rick�q�用了大量篇�q�介�l�Spring 3.0如何在API和配�|�层面支持REST�Q�不�q�这不在我兴���范围内�Q?br /><br />除了上述两大亮点�Q�还有如下一些值得一提的变化�Q?br /><br />1- ��L��了Commons Attributes�Q�减���了很多相关依赖;<br />2- 不再支持Struts 1.x;<br />3- 全面转向Listener-style的context加蝲方式;<br />4- 源码�l�织更加模块化，每个子模块都是独立项�?<br />5- 构徏环境抛弃Maven�Q��{��Z��用ANT+Ivy; (�W�者非常赞成的一个变�?<br />6- 源码库由CVS全面转向Subversion�?"逃离"CVS是大势所���？)<br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/248655.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-12-27 17:55 <a href="http://www.tkk7.com/sean/archive/2008/12/27/248655.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[Tips] 修改Java�E�序�pȝ��默认字体</title><link>http://www.tkk7.com/sean/archive/2008/10/24/236363.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Fri, 24 Oct 2008 03:36:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/10/24/236363.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/236363.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/10/24/236363.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/236363.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/236363.html</trackback:ping><description><![CDATA[
		<br />实在受不了在中文Windows下Java(Swing)�E�序默认的字体，那叫一个难看。如果你和我一��P��那么希望下面的小贴士可以帮到你（以JDK 1.5.0��Z���Q�：<br /><br />1- 扑ֈ�JRE目录�Q�如果你安装的是JDK�Q�那么在JDK的目录下可以扑ֈ�jre子目录，���是它了�Q�如果你安装的JRE�Q�那么默认应该在Program Files\Java\jre1.5.0_...�?br />2- �q�入JRE目录下的lib文�g夹，你应该可以看到很多fontconfig开头的文�g�Q�找到fontconfig.properties.src�Q�拷贝一份，重命名�ؓfontconfig.properties�?br />3- 打开fontconfig.properties�Q�你会看��C��大堆字体相关的配�|�，扑ֈ�allfonts.chinese-ms936�q�一条（通常在最前面�Q�，可以看到默认讄���为SimSun�Q�修改这个配�|�，选填你需要的字体名称卛_���Q�如"Courier New"�?Consolas"�{��?br /><br />更详�l�的配置�Q�参考：<br /><a target="_blank" title="http://java.sun.com/j2se/1.5.0/docs/guide/intl/fontconfig.html" >http://java.sun.com/j2se/1.5.0/docs/guide/intl/fontconfig.html</a><br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/236363.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-10-24 11:36 <a href="http://www.tkk7.com/sean/archive/2008/10/24/236363.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>iText vs FOP - Java动态生成PDF的两个选择</title><link>http://www.tkk7.com/sean/archive/2008/10/05/232577.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sun, 05 Oct 2008 15:28:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/10/05/232577.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/232577.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/10/05/232577.html#Feedback</comments><slash:comments>9</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/232577.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/232577.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: �׃��工作需要，今天���单的看了一下Java生成PDF的相兌���料。综合看下来�Q�除了��用报表��^台和OOo的附带工��P��目前使用较�ؓ普遍的有两个途径�Q�iText和Apache的FOP。从实际出发�Q�我们分别看看两者处理带有中文的PDF的具体用法吧�?nbsp;&nbsp;<a href='http://www.tkk7.com/sean/archive/2008/10/05/232577.html'>阅读全文</a><img src ="http://www.tkk7.com/sean/aggbug/232577.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-10-05 23:28 <a href="http://www.tkk7.com/sean/archive/2008/10/05/232577.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[Tips] 使用Groovy处理邮�g通知</title><link>http://www.tkk7.com/sean/archive/2008/08/27/225118.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Wed, 27 Aug 2008 10:55:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/08/27/225118.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/225118.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/08/27/225118.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/225118.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/225118.html</trackback:ping><description><![CDATA[
		<br />通过Groovy实现邮�g通知�Q�其实是转发到ANT�Q�十分容易，先上代码�Q?br /><br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 128, 128);"> 1</span> <span style="color: rgb(0, 0, 0);">ant </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 255);">new</span><span style="color: rgb(0, 0, 0);"> AntBuilder()<br /></span><span style="color: rgb(0, 128, 128);"> 2</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 3</span> <span style="color: rgb(0, 0, 0);">def mail(subject, body, attachment </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> [dir:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">.</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,files:[]]) {<br /></span><span style="color: rgb(0, 128, 128);"> 4</span> <span style="color: rgb(0, 0, 0);">    ant.mail(mailhost:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">mail.com</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, mailport:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">1025</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, user:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">mailer</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, password:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">123</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, subject:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">${subject}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) {<br /></span><span style="color: rgb(0, 128, 128);"> 5</span> <span style="color: rgb(0, 0, 0);">        from(address:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">nobody@mail.com</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);"> 6</span> <span style="color: rgb(0, 0, 0);">        to(address:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">nobody@mail.com</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);"> 7</span> <span style="color: rgb(0, 0, 0);">        message(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">${body}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);"> 8</span> <span style="color: rgb(0, 0, 0);">        attachments() {<br /></span><span style="color: rgb(0, 128, 128);"> 9</span> <span style="color: rgb(0, 0, 0);">            </span><span style="color: rgb(0, 0, 255);">if</span><span style="color: rgb(0, 0, 0);"> (attachment.files) {<br /></span><span style="color: rgb(0, 128, 128);">10</span> <span style="color: rgb(0, 0, 0);">                fileset(dir:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">${attachment.dir}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) {<br /></span><span style="color: rgb(0, 128, 128);">11</span> <span style="color: rgb(0, 0, 0);">                    attachment.files.each {<br /></span><span style="color: rgb(0, 128, 128);">12</span> <span style="color: rgb(0, 0, 0);">                        include(name:it)<br /></span><span style="color: rgb(0, 128, 128);">13</span> <span style="color: rgb(0, 0, 0);">                    }<br /></span><span style="color: rgb(0, 128, 128);">14</span> <span style="color: rgb(0, 0, 0);">                }<br /></span><span style="color: rgb(0, 128, 128);">15</span> <span style="color: rgb(0, 0, 0);">            }<br /></span><span style="color: rgb(0, 128, 128);">16</span> <span style="color: rgb(0, 0, 0);">        }<br /></span><span style="color: rgb(0, 128, 128);">17</span> <span style="color: rgb(0, 0, 0);">    }<br /></span><span style="color: rgb(0, 128, 128);">18</span> <span style="color: rgb(0, 0, 0);">}<br /></span><span style="color: rgb(0, 128, 128);">19</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">20</span> <span style="color: rgb(0, 0, 0);">attachment </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> [dir:</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">/tmp</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, files:[</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">some.properties</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">some.sql</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">]]<br /></span><span style="color: rgb(0, 128, 128);">21</span> <span style="color: rgb(0, 0, 0);">mail(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">Test mail message at ${new Date()}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, </span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">This is a test message.</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, attachment)<br /></span><span style="color: rgb(0, 128, 128);">22</span> <span style="color: rgb(0, 0, 0);"></span></div><br />�q�个���单的例子很好的展�C�Z��如下Groovy�Ҏ��：<br />1- Groovy脚本可以不需要定义�Q何class�Q�方法定义和实际调用也可以�؜在一��P��十分��手�?br />2- 定义变量不需要指定类型，只要赋值即可，不过�q�行期依然是强类型�?br />3- �Ҏ��参数可以有默认倹{�?br />4- List和Map的构建直接在语义层面提供支持�Q�如[a:1,b:2]和[1,2]�?br />5- GString使得我们可以方便的在String中引用变量甚��x��表达式，�?${a.b.c}"�?${new Date()}"�?br />6- 逻辑判断在true/false基础上有所扩展�Q�[]�Q?个元素的List�Q�和null均做false处理�?br />7- Closure支持�Q�方便我们在外围代码处“当场”指定处理逻辑�Q�省��M��大多数在Java中需要匿名内部类来处理的�ȝ���Q�如attachment.files.each { .... }�Q�只有一个传入参数时�Q�可直接用it指代�?br />8- 与ANT的无�~�集成，以及对Builder模式的良好支持，使得我们可以写出上述初看上去有些不可思议的代码�?br /><br />P.S. 虽然Groovy自己已经bundle了ANT�Q�可以直接��用其中的�l�大多数功能�Q�不�q��ؓ了调用ANT的mail task�Q�还需要将ANT发行版中带有的ant-javamail.jar以及JavaMail API对应的jar包（可以从Sun�|�站下蝲�Q�加到classpath。如果你的JDK版本低于6.0�Q�还需要activation.jar�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/225118.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-08-27 18:55 <a href="http://www.tkk7.com/sean/archive/2008/08/27/225118.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[Tips] "When ANT is not enough"升���?- Groovy to the rescue!</title><link>http://www.tkk7.com/sean/archive/2008/08/25/224246.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Mon, 25 Aug 2008 11:38:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/08/25/224246.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/224246.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/08/25/224246.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/224246.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/224246.html</trackback:ping><description><![CDATA[
		<br />
		<a target="_blank" title="http://www.tkk7.com/sean/archive/2008/08/20/223139.html" href="/sean/archive/2008/08/20/223139.html">前一���随�W?/a>提到目前计划�pȝ��学习Python和Groovy�Q�有什么比实际使用更好的学习途径呢？1�q�多以前�Q�我曄����?a target="_blank" title="http://www.tkk7.com/sean/archive/2007/06/18/124859.html" href="/sean/archive/2007/06/18/124859.html">另一���随�W?/a>提到�Q�当ANT不够用时�Q�可以用JRuby+Antwrap�Q�这是一个可行的�Ҏ���Q��ƈ且经�q�了长期实战的考验。不�q�Groovy可以做的更好�Q�感兴趣的朋友可以和Antwrap版对照一下）�Q?br /><br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 128, 128);"> 1</span> <span style="color: rgb(0, 128, 0);">#</span><span style="color: rgb(0, 128, 0);">!/usr/bin/env groovy</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 2</span> <span style="color: rgb(0, 128, 0);"></span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 3</span> <span style="color: rgb(0, 0, 0);">ant </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> new AntBuilder()<br /></span><span style="color: rgb(0, 128, 128);"> 4</span> <span style="color: rgb(0, 0, 0);">root </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">:pserver:cvsuser:password@10.10.10.1/cvsrepo/SampleProduct</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 5</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 6</span> <span style="color: rgb(0, 0, 0);"></span><span style="color: rgb(0, 0, 255);">def</span><span style="color: rgb(0, 0, 0);"> checkout() {<br /></span><span style="color: rgb(0, 128, 128);"> 7</span> <span style="color: rgb(0, 0, 0);">    ant.cvs(cvsroot:root,command:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">checkout -A</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">package</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">.</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,dest:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">cvsoriginal</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,compressionlevel:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">9</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);"> 8</span> <span style="color: rgb(0, 0, 0);">}<br /></span><span style="color: rgb(0, 128, 128);"> 9</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">10</span> <span style="color: rgb(0, 0, 0);"></span><span style="color: rgb(0, 0, 255);">def</span><span style="color: rgb(0, 0, 0);"> update() {<br /></span><span style="color: rgb(0, 128, 128);">11</span> <span style="color: rgb(0, 0, 0);">    ant.cvs(cvsroot:root,command:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">update -A -d</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">package</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">.</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,dest:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">cvsoriginal</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,compressionlevel:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">9</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">12</span> <span style="color: rgb(0, 0, 0);">}<br /></span><span style="color: rgb(0, 128, 128);">13</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">14</span> <span style="color: rgb(0, 0, 0);"></span><span style="color: rgb(0, 0, 255);">def</span><span style="color: rgb(0, 0, 0);"> compile(project) {<br /></span><span style="color: rgb(0, 128, 128);">15</span> <span style="color: rgb(0, 0, 0);">    ant.javac(srcdir:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">cvsoriginal/$project/src</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,destdir:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">cvsoriginal/$project</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,target:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">1.5</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,encoding:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">GBK</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">16</span> <span style="color: rgb(0, 0, 0);">    ant.copy(todir:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">cvsoriginal/$project</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) {<br /></span><span style="color: rgb(0, 128, 128);">17</span> <span style="color: rgb(0, 0, 0);">        fileset(dir:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">cvsoriginal/$project/src</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) {<br /></span><span style="color: rgb(0, 128, 128);">18</span> <span style="color: rgb(0, 0, 0);">            exclude(name:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">**/*.java</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">19</span> <span style="color: rgb(0, 0, 0);">        }<br /></span><span style="color: rgb(0, 128, 128);">20</span> <span style="color: rgb(0, 0, 0);">    }<br /></span><span style="color: rgb(0, 128, 128);">21</span> <span style="color: rgb(0, 0, 0);">    ant.jar(destfile:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">build/$project.jar</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,basedir:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">cvsoriginal/$project</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,manifest:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">MANIFEST.MF</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) {<br /></span><span style="color: rgb(0, 128, 128);">22</span> <span style="color: rgb(0, 0, 0);">        exclude(name:</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">src/**</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">23</span> <span style="color: rgb(0, 0, 0);">    }<br /></span><span style="color: rgb(0, 128, 128);">24</span> <span style="color: rgb(0, 0, 0);">}<br /></span><span style="color: rgb(0, 128, 128);">25</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">26</span> <span style="color: rgb(0, 0, 0);"></span><span style="color: rgb(0, 0, 0);">//</span><span style="color: rgb(0, 0, 0);"> to actually call your target<br /></span><span style="color: rgb(0, 128, 128);">27</span> <span style="color: rgb(0, 0, 0);">checkout root<br /></span><span style="color: rgb(0, 128, 128);">28</span> <span style="color: rgb(0, 0, 0);"></span></div><br />代码更紧凑，与Java的集成更无缝。只需要简单的培训�Q�有Java基础的朋友就能上手，不必再额外学习和习惯Ruby的语法，不用gem install�Q�也不用去monkey-patch个别文�g来集成和打包Ant、Antwrap和JRuby�Q�只需要一个groovy-all-x.x.x.jar加上自己的脚本即可轻松搞定�?br /><br />[2008-08-26 19:25:00 更新] �l�过实际环境���试�Q�原来JRuby(1.1)+Antwrap需�?4分钟完成的构建，改用Groovy(1.5.6)后，仅需�?6分钟�Q�对于需要经常处理构建的��目和��品来��_���q?分钟�q�是相当可观的�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/224246.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-08-25 19:38 <a href="http://www.tkk7.com/sean/archive/2008/08/25/224246.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>08�q�秋季学习计�?/title><link>http://www.tkk7.com/sean/archive/2008/08/20/223139.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Tue, 19 Aug 2008 16:33:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/08/20/223139.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/223139.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/08/20/223139.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/223139.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/223139.html</trackback:ping><description><![CDATA[
		<br />从开始专心学习Java到现在，已经7�q�了�Q�非常幸�q�的�Q�在�q?�q�中�Q�除�?�q�的“半工半诠Z��和1�q�的.NET��目�Q�篏�U�有5�q�都是从事的Java��Z��的应用开发，应该��_��Java伴随我走�q�了从入行到站稳脚跟最关键的几�q�。从某种意义上讲�Q�我应该感谢Java�?br /><br />然而，随着旉���的推�U�，接触到的不同的东西越来越多，自己对不同问题的看法和解决问题的思�\���来���成熟，Java虽然是全能型的语�a��Q�也变得���来���无法满���x��常工作和�׃��的需要，在一些特定的场合�Q�也���发别扭�Q�有时我甚至会怀念学生时代的Pascal/Delphi和后来的C/C++。回�q�头�ȝ��自己�Q�从刚入行时的Java fanboi�Q�到现在�q�样一个pragmatist和purist的结合体�Q�是多么有趣的�{变�?br /><br />在过�ȝ��2�q�多�Q�除了Java�?NET�Q�陆陆箋�l�接触到�q�有�q�简单��用经历的�~�程语言�Q�有bash、PL/SQL、JavaScript、PHP、Perl、Ruby/JRuby、Scala、Python/Jython、Groovy�{�等�Q�不�q�都没有�pȝ��的学习过�Q�基本就是拿来主义，什么好用用什么，解决手里的问题�ؓ丅R�?br /><br />也许是工作性质的原因，日常要处理的非技术性�Q务越来越多，留给具体�~�程的时间现在一天比一天少�Q�编�E�带来的乐趣和解��x��术问题带来的快感�Q�就昑־�十分珍贵。所以我下定军_��一定要�pȝ��的学�?~2�U�和Java/.NET不同的编�E�语�a�。一开始这个选择�q�不�Ҏ���Q�我曄����q?a target="_blank" title="http://twitter.com/laogao/statuses/853718837" >半调侃式的和一个朋友讲�Q�“Python, Ruby, Scala, Groovy, 一个都不能����?/a>�Q�经�q�一�D�|��间的权衡之后�Q�还是比较自然的作出了最后的选择�Q�Python和Groovy�?br /><br />Python�q�个选择其实�q�不难，留意Python�q�门语言�Q�其实说��h��也有差不�?�q�了�Q�它完全�W�合“和Java/.NET不同的编�E�语�a�”这个条�Ӟ��而且应用面很�q�，也十分成熟，功能也非常强大，加上大量现成的类库，能够胜�Q很多不同�c�d��的编�E��Q务。基本上�q�是一个不用�Q何思想斗争的选择�?br /><br />Groovy�q�个选择相对没有那么直接�Q�至���在我真正用Groovy上手做一些东西之前，对它�q�没有特别的感觉�Q�甚臌���疑它存在的�h��|��因�ؓ有Jython和JRuby的选择�Q��ؓ什么一定要Groovy呢？到最�q�开始接触Groovy�Q�才逐渐了解到它的出�w�（Groovy的作者受到Python的启发，不过后来Groovy发展的越来越接近Ruby�Q�，和它在“兼容”Java代码的前提下为Java语言带来的巨大的表达力提升。对于有Java基础的�h而言�Q�Groovy十分�Ҏ��上手�Q�而且可以帮助我们���化很多繁杂的��d���Q�比如自动构建和自动化测试，而这正是我目前需要处理的�?br /><br />最后简单说说其他几个落选的原因�Q�除了时间有限之外）�Q?br />bash - 目前掌握的基本够用，发现不够�Ӟ��完全可以用Python代替�?br />PL/SQL - 基本很少使用了，偶尔需要维护，今后深入用的��Z��也不多�?br />JavaScript - 对“网��”版的编�E�语�a�可能有天生的偏见�Q�尤其是作�ؓJava fanboi�Q�当然对它“盗用”Java�q�个名字是有意见的�?br />PHP - 用的��Z��很少�Q�而且�q�于quick&amp;dirty�Q�不是我喜欢的风根{�?br />Perl - 虽然功能强大�Q�但是感觉语法有些terse�Q�不是很适应�Q�能处理的�Q务，基本上Python也可以�?br />Ruby - 语法和设计理念还是有一些认同，但是对Unicode的支持和部��v环境的支持都�q�不是很让�h信服�Q�另外，拿孟岩的话说�Q�Ruby是一门魔�q�语�a��Q�我不喜�Ƣ过于魔�qȝ��东西�Q�而更习惯具体直接的代码�?br />Scala - 也是一门和Java�q�_��关系密切的语�a��Q�不�q�有些“学院派”，函数式编�E�固然是亮点�Q�但短期内看不到太多的学习�h倹{�?br /><br />所以，�l�g��所�q�ͼ�最后再点一下题�Q?8�q�秋季的学习计划是：�pȝ��学习Python和Groovy�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/223139.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-08-20 00:33 <a href="http://www.tkk7.com/sean/archive/2008/08/20/223139.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] JRuby 1.1.2 发布</title><link>http://www.tkk7.com/sean/archive/2008/05/28/203452.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Wed, 28 May 2008 04:08:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/05/28/203452.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/203452.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/05/28/203452.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/203452.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/203452.html</trackback:ping><description><![CDATA[
		<br />JVM下的Ruby语言实现JRuby发布1.1版的�W�二个升�U�版1.1.2�Q�这个版本最主要��x��的仍然是性能�Q�值得一提的包括�Q?br />
1- 启动旉���大大�~�短�?br />
2- YAML标记解析速度提高100x以上�?br />
3- �Ҏ��调用在性能、线�E�和栈深度等斚w��的增强�?br />4- 其他bug�?br /><br />主页: <a target="_blank" title="http://jruby.codehaus.org/" >http://jruby.codehaus.org/</a><br />下蝲: <a target="_blank" title="http://dist.codehaus.org/jruby/" >http://dist.codehaus.org/jruby/</a><br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/203452.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-05-28 12:08 <a href="http://www.tkk7.com/sean/archive/2008/05/28/203452.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] JRuby 1.1发布</title><link>http://www.tkk7.com/sean/archive/2008/04/05/190985.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sat, 05 Apr 2008 15:01:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/04/05/190985.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/190985.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/04/05/190985.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/190985.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/190985.html</trackback:ping><description><![CDATA[
		<br />JVM下的Ruby语言实现JRuby正式发布1.1版，�q�个版本最主要��x��的是性能�Q�除此之外，值得一提的包括�Q?br />1- 支持���Ruby代码�~�译成Java Bytecode�?br />2- ���Oniguruma�q�个Ruby 1.9标配的正则库�U�L��到Java�?br />3- 重构�q�的IO实现�?br />4- 更低的内存消耗�?br />5- 修复大量其他兼容性问题�?br /><br />主页: <a target="_blank" title="http://jruby.codehaus.org/" >http://jruby.codehaus.org/</a><br />下蝲: <a target="_blank" title="http://dist.codehaus.org/jruby/" >http://dist.codehaus.org/jruby/</a><br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/190985.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-04-05 23:01 <a href="http://www.tkk7.com/sean/archive/2008/04/05/190985.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[Tips] �U�L��Oracle数据库到PostgreSQL的要�?/title><link>http://www.tkk7.com/sean/archive/2008/03/11/185510.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Tue, 11 Mar 2008 15:04:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/03/11/185510.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/185510.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/03/11/185510.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/185510.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/185510.html</trackback:ping><description><![CDATA[
		<br />最�q�尝试把一个Oracle数据库，�q�同构徏在这个数据库上的Java应用�U�L��到PostgreSQL环境。在�U�L���q�程中，�ȝ��了一些要点，一斚w��作�ؓ�W�记备忘�Q�一斚w��也给有类��g�Q务需要处理而又无从下手的朋友作为参考�?br /><br />1- 首先是准备PostgreSQL环境。有条�g的话�Q�最好是找一台空闲的PC��Z��为测试服务器�Q�安装Linux或BSD�Q�然后从源码�~�译最新的PostgreSQL 8.3.0。编译时�Q�通过configure指定--with-perl�?-with-python以支持PL/Perl和PL/Python。因为绝大多数Linux发行版都已自带Perl和Python�Q�不必额外安装�?br /><br />2- 如果是Windows环境�Q�又需要Perl和Python�Q�则必须额外安装�Q�Python的话�Q�可以方便的扑ֈ�2.5 for Windows的安装包�Q�Perl的话�Q�推荐ActivePerl�Q�相寚w��烦一点，��Z��后面用到的一些便利的功能��利加蝲�Q�Perl版本���量�?.8.8�?br /><br />3- 创徏数据库和用户。通过initdb初始化数据目录，配置postgresql.conf指定��L��IP、端口等�{�信息，配置pg_hba.conf指定讉K��权限�Q�通过pg_ctl -D &lt;数据目录&gt; -l &lt;日志文�g&gt; start启动postmaster�Q�然后createdb、createuser创徏数据库和用户。数据库建好之后�Q�就可以createlang -d &lt;数据库名&gt; [plperl|plperlu|plpython|plpythonu]开启PL/Perl和PL/Python。具体命令行参数可通过各命令加--help查看�?br /><br />4- 安装PostgreSQL客户端pgAdminIII�Q�最新版�?.8.2�Q�有条�g的话�Q�也可以下蝲源码自己�~�译�?br /><br />5- 安装Oracle客户端，需要在PostgreSQL同一台机器，以便Perl用于�q�接数据库的DBI和Oracle驱动DBD::Oracle模块��利安装。如果是Windows上的ActivePerl�Q�则可以通过ppm install DBD-Oracle�Q�如果是Linux/BSD�Q�则可以通过CPAN来安装，如perl -MCPAN -e shell�q�入CPAN Shell�Q�通过install &lt;模块�?gt;或force install &lt;模块�?gt;安装DBI和DBD::Oracle�?br /><br />6- 数据库的�U�L���Q�可以选择ora2pg来帮忙，目前的版本是4.7。ora2pg是一个用于读取Oracle数据库schema、数据，�q�生成PostgreSQL脚本或直接导入PostgreSQL数据库的Perl工具。用法很���单，���是通过.conf文�g指定数据库连接信息包括NLS_LANG、需要导出导入的schema、table、view、data�{�等�Q�然后执行一个pl脚本。这是目前相�Ҏ��较成熟的一个方案，但是遇到schema复杂、约束较强的数据库，需要手工处理的地方�q�是不少。徏议不要直接写入PostgreSQL�Q�而是生成SQL脚本�Q�验证无误后再执行。ora2pg默认会把Oracle中名�U�的大写转换成小写，因�ؓPostgreSQL在解析SQL�Ӟ��除非""括�v来，默认都是转成���写。schema、table、view、sequence、data�{�等�Q�基本用ora2pg�Q�加上一些手工调整即可搞定。至于function、stored procedure�{�，�q�是手工�U�d���Q�偷不得懒。除了ora2pg�Q�其实也可以配置DBI-Link�Q�将Oracle数据库挂到PostgreSQL数据库作��Z���l�独立的"schema"�Q�然后用create table xxx as select ... from ...�q�样的语法来倒表和数据。PostgreSQL的contrib包也附带有一个dblink�Q�不�q�是�q�接其他PostgreSQL数据库的�Q�如果需要连接非PostgreSQL�Q?
�q�是考虑DBI-Link�Q��Q何可以通过Perl的DBI接口讉K��的数据库�Q�都能link�q�PostgreSQL�?br /><br />7- 接下来就是Java应用本��n了，我这�ơ移的这个应用是Spring+iBatis架构的，很多SQL语句都是明文�Q�好在DAO层的基础部分(CRUD)的SQLMap是工兯���动生成，且都是符合ANSI SQL92标准的，不需要修改即可��用。其余的高��查询SQL�Q�需要调整的地方不少�Q�一些常见的修改列�D如下�Q?br /><br />i. SELECT出来的column�Q�包括子查询�Q�，如果有别名，必须加AS�Q�比�?select null as some_column from some_table;<br />ii. PostgreSQL没有dual表，�c�M��select 0 from dual的语句，写成select 0卛_��;<br />iii. DECODE函数需要重构成(case when some_column = 'some_value' then 'some_other_value' when ... then ... else 'some_default_value' end ) as some_column;<br />iv. NVL()函数�Q�PostgreSQL中相对应的是coalesce()�Q�其实几乎所有主���DBMS都支持coalesce�Q�包括Oracle�Q�这才是标准写法;<br />v. 比较日期�Q�在PostgreSQL中，�����使用date_trunc('day', SOME_DATE) = date_trunc('day', #enteredDate#)�q�样的写法，其中'day'位置可选字�D�包括有year、month、week、hour、minute、second�{�等;<br />vi. SYSDATE�Q�对应到PostgreSQL是current_timestamp�Q�可以根据需要��用current_date;<br />vii. ROWNUM�Q�通常我们用ROWNUM都是��Z��限制查询出来的记录数�Q�PostgreSQL没有�q�个关键字，需要改成在SELECT语句最后添�?LIMIT语句�Q�如LIMIT 100;<br />viii. (+)�q�样的外�q�接写法需要调整�ؓSQL标准�?table1 [LEFT|RIGHT|FULL] OUTER JOIN table2 ON (...);<br />ix. CONNECT BY ... START WITH ... 递归查询可以参�?http: //www.postgresql.org/docs/8.3/static/tablefunc.html 的connectby()函数.<br /><br />最后再多提一点，PostgreSQL自带的过�E�语�a�是PL/pgSQL�Q�在PostgreSQL上写function�Q�除了用plpqsql�Q�还支持sql、plperl(u)、plpython(u)�{�等。如果你对SQL天生�q�敏�Q�看�c�M��PL/pgSQL的代码都很吃力，别说是写了，你完全可以用你喜�Ƣ的语言来表辑և�数和存储�q�程的逻辑。有了PL/Python�Q�你�q�怕什么呢�Q�你几乎能做��M��事�?br /><br />[更新 20080313] 把JDBC驱动的部分漏掉了�Q�移植Java应用�Ӟ��除了改SQL�Q�还需要拿PostgreSQL的JDBC驱动攑ֈ�classpath下面�Q�如WEB-INF/lib�Q�然后修�Ҏ��据库�q�接URL�Q�改成jdbc:postgresql://&lt;ip&gt;:&lt;port&gt;/&lt;dbname&gt;卛_���?br /><br />[更新 20080323] �U�L��schema和数据时�Q�比ora2pg更方便的一�U�方式是利用EnterpriseDB的Migration Tool�Q�将Oracle的JDBC驱动ojdbc14.jar拯���到EnterpriseDB安装路径下的jre/lib/ext下后�Q�启动Developer Studio卛_��建立Oracle�q�接�Q�选中schema后，可以通过右键Online Migration���schema、数据、函数包�{�等一�ơ性通通导入EnterpriseDB。如果要�l�箋往"�U?PostgreSQL�U�，从EDB做backup�Q�然后到PostgreSQL下做restore�Q�这样会丢掉函数包，因�ؓ毕竟EDB在PostgreSQL基础上做了相当改造以和Oracle兼容�Q�不�q�函数包之类�q�是手工�U�L��较稳妥�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/185510.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-03-11 23:04 <a href="http://www.tkk7.com/sean/archive/2008/03/11/185510.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] Sun Hires Python Experts</title><link>http://www.tkk7.com/sean/archive/2008/03/05/183819.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Tue, 04 Mar 2008 16:07:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/03/05/183819.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/183819.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/03/05/183819.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/183819.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/183819.html</trackback:ping><description><![CDATA[
		<br />在JRuby得到Sun的认可�ƈ成功发布1.0�Q�已�l�向1.1�q�进之时�Q�比Ruby应用更广、更早出现JVM�q�行版本的Python也终于得��C��Sun的重视：<br /><br /><a target="_blank" title="http://www.eweek.com/c/a/Application-Development/Sun-Hires-Python-Experts/" >http://www.eweek.com/c/a/Application-Development/Sun-Hires-Python-Experts/</a><br /><br />���管Sun官方的说法是他们会更多的应用和扶持native版的Python�Q�相信一直饱受冷落的Jython�Q�也多少会从中受益吧�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/183819.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-03-05 00:07 <a href="http://www.tkk7.com/sean/archive/2008/03/05/183819.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] Apache Harmony 5.0 reaches M5</title><link>http://www.tkk7.com/sean/archive/2008/02/29/183052.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Fri, 29 Feb 2008 15:28:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/02/29/183052.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/183052.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/02/29/183052.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/183052.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/183052.html</trackback:ping><description><![CDATA[
		<br />���在2月的最后一天，Apache Harmony发布�?.0的第5个milestone: <a target="_blank" title="http://harmony.apache.org/" >http://harmony.apache.org/</a><br /><br />为默默耕耘的人鼓掌�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/183052.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-02-29 23:28 <a href="http://www.tkk7.com/sean/archive/2008/02/29/183052.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] Grails正式发布1.0�?/title><link>http://www.tkk7.com/sean/archive/2008/02/07/179425.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Thu, 07 Feb 2008 02:47:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/02/07/179425.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/179425.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/02/07/179425.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/179425.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/179425.html</trackback:ping><description><![CDATA[
		<br />春节期间真是好事不断啊，�l?a target="_blank" title="http://www.tkk7.com/sean/archive/2008/02/07/179424.html" href="/sean/archive/2008/02/07/179424.html">PostgreSQL 8.3正式release</a>后，Grails也如�U�发�?.0版。作为受到Ruby on Rails启发开动的"Groovy版Rails"��目�Q�它在设计哲学上和Rails�Q�包括JRuby版的Rails�Q�有着很大的不同，Rails是从头开始用Ruby完整实现从表现层到ORM所有功能，而Grails则是利用Java�C�֌�现有的成熟开源框�Ӟ��如Spring、Hibernate�{�，在此基础上整合出一套完整的Web应用框架�Q�有点类似Pylons和Django的区别�?br /><br />�?a target="_blank" title="http://www.tkk7.com/sean/archive/2008/01/27/178036.html" href="/sean/archive/2008/01/27/178036.html">之前一���随�W?/a>也提到过�Q�和其它在JVM中运行的动态语�a�如Jython、JRuby不同的是�Q�Groovy对于有Java基础的�h们来��_��学习曲线几乎是��^的，上手很快�Q�如果你同时也熟悉Spring和Hibernate�{�，那么Grails更是不二之选�?br /><br />官网: <a target="_blank" title="http://grails.codehaus.org/" >http://grails.codehaus.org/</a><br />Release Notes: <a target="_blank" title="http://grails.org/1.0+Release+Notes" >http://grails.org/1.0+Release+Notes</a><br />下蝲: <a target="_blank" title="http://grails.codehaus.org/Download" >http://grails.codehaus.org/Download</a><br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/179425.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-02-07 10:47 <a href="http://www.tkk7.com/sean/archive/2008/02/07/179425.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[链接] 会Java�Q�学Groovy�Q�这里有���很好的介绍/演示 </title><link>http://www.tkk7.com/sean/archive/2008/01/27/178036.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sun, 27 Jan 2008 09:14:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2008/01/27/178036.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/178036.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2008/01/27/178036.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/178036.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/178036.html</trackback:ping><description><![CDATA[
		<br />如果你有一定的Java基础�Q�想快速的���尝动态语�a�的味道，Groovy是个自然的过渡选择。今天无意中看到一���介�l�Groovy的文章，很短�Q�也很有���，从一个典型的Java�E�序开始，一步一�?Groovy�?�Q�最�l�改造成一个完整的Groovy�E�序�Q?br /><a target="_blank" ><br />http://java.dzone.com/news/java-groovy-few-easy-steps</a><br /><br />如果你对当下动态语�a�的现状有所了解�Q�那你多半已�l�知道能在JVM中运行的动态语�a��Q�远不止Groovy一�U�，那么什么理�׃��让你选择Groovy而非Jython、JRuby或者其他类似的语言呢？�W�者认��Z��要还是编码习惯和风格�Q�Groovy是这些语�a�中最接近Java的。Jython和JRuby都是从其他成功的动态语�a�"�U�L��"�q�来�Q�带有明昄���Python、Ruby语法特征和习惯。选择Jython或者JRuby的朋友，我想大都是原本就有Python或者Ruby的基����Q�舍不得Python和Ruby的一些很方便的语法和�~�码风格/习惯/哲学�Q�或者干脆就是�ؓ了将Python和Ruby世界的一些框架引入到Java中，或者说是让Python/Ruby应用能够更好的利用Java�q�_��已有的资源。如果你在动态语�a�上没有这斚w��的需求，只是��Z��让你的Java应用更动态，选择Jython或者JRuby只能是凭�I�增加学习难度。要知道�Q�Python和Ruby都是很有特点、很有个性的语言�Q�其实Java又何���不是）�Q�要从Java的思维和哲学，转向Python/Ruby的思维和哲学，�q�不是那么容易做到和做好的�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/178036.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2008-01-27 17:14 <a href="http://www.tkk7.com/sean/archive/2008/01/27/178036.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title> [Tips] When ANT is not enough, JRuby to the rescue!</title><link>http://www.tkk7.com/sean/archive/2007/06/18/124859.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sun, 17 Jun 2007 16:39:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/06/18/124859.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/124859.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/06/18/124859.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/124859.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/124859.html</trackback:ping><description><![CDATA[
		<br />
随着��目���来���大�Q�你的ANT脚本变得���来���臃肿，���来���依赖antcontrib来实现构建逻辑�Q�不��x��弃对构徏�q�程和��出做�_����的控�Ӟ��恨不得自己写ANT Task�Q?br /><br />
�{�一�{�，在你考虑转向Maven或者真正卷赯���子开始研�I�ANT Task的API之前�Q�先听我向你推荐Ruby/JRuby。相信我�Q�也许这才是你真正需要的�?br /><br />
在我看来构徏脚本最主要的要求是表达能力和控制能力，表达能力是我们应该能够很方便的告诉它我们要它做什么，而控制能力是我们告诉它如何去做，除了必要�?
构徏命��o的参数、依赖关�p�M��外，它应该能够理解我们其他一些特�D�要求。在��目相对���单时�Q�ANT的XML格式�?脚本语言"能够比较好的表达构徏者的�?
求，臛_��比纯Java的方式更加简单清晎ͼ�于是几乎从它诞生之日���成为Java领域当仁不让的头��h��建工兗���但是ANT也有它不够用的时候，���其在控制能
力上�Q��ؓ了实现实际��用中���来���复杂越来越�_����的对构徏�q�程和��出的要求�Q�ANT的��用者们开始对ANT�q�行扩展�Q�最具媄响力�?非官�?扩展可能���是
antcontrib了，很多实际Java��目的构建文件中我们都能够找到它的媄子。但是一堆taskdef�?variable><substring><stringutil><length><math>之类的夹杂在ANT脚本里，怎么看怎么觉得别扭�Q�也严重影响构徏脚本的可��L���?br /><br />
我发现我需要的是一个具有完整功能脚本语�a�来写我的构徏逻辑�Q�一斚w��它要���_�����单，我需要清晰的表达我的意图�Q�另一斚w��当我需要的时候它要��够强大来帮我实现�_����的控制。我自然而然惛_��Ruby�?br /><br />
�׃��Ruby是一个功能完整的工具�Q�完全自己写Ruby脚本来调用Java自己的构建工具如javac、jar�{�等�q����不可能，但是既然已经有�h做了�?
子，我们拿来用就是了�Q�大不了自己再改装一下，也少��C��弯�\。时下比较流行的解决�Ҏ��有Buildr、Raven、Rant和Antwrap�Q�它们各有特
点，大家可以�Ҏ��需要进行选择�?br /><br />
我最�l�选了其中最"轻量"的Antwrap�Q�原因嘛�Q�我不想学新的API�Q�我已经熟悉ANT常用的Task�Q�而且我希望尽可能多的自己控制构徏的过�E�和�?
出。Antwrap最能够满��我的需要。而前不久JRuby刚刚发布�?.0版，�q�样一来Ruby和Java的跨界引用变得更加容易，Ruby的实现自�?
���选择了JRuby�?br /><br />
安装JRuby和Antwrap相当�Ҏ���Q�只要把下蝲的jruby-bin-1.0.tar.gz/.zip解压到本圎ͼ����保JAVA_HOME�?
CLASSPATH的配�|�，然后gem install Antwrap (选择Java�?
卛_��。�ؓ了顺利加载Antwrap�Q�需要在CLASSPATH中包含ANT的ant.jar和ant-launcher.jar�?当然�Q�如果想更加方便
的share你的成果�Q�可以把ant的文件拷贝到jruby目录下，在jruby的启动脚本加入必要的export/set命��o�Q�然后打包，�q�样别�h只要
从你提供的zip包解压出来即可��用�?<br /><br />
��Z���l�大家一个直观的感觉�Q��D个简单的例子(貌似BlogJava没有提供对Ruby代码的默认支持，大家���就看吧)�Q?br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 128, 128);"> 1</span> <span style="color: rgb(0, 0, 0);">require </span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">rubygems</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 2</span> <span style="color: rgb(0, 0, 0);">gem </span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">Antwrap</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 3</span> <span style="color: rgb(0, 0, 0);">require </span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">antwrap</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 4</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 5</span> <span style="color: rgb(0, 0, 0);">@ant</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">AntProject.</span><span style="color: rgb(0, 0, 255);">new</span><span style="color: rgb(0, 0, 0);">(:name</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">SampleAntwrapBuild</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, :basedir</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">.</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);"> 6</span> <span style="color: rgb(0, 0, 0);">@cvsroot</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">:pserver:cvsuser:password@10.10.10.1/cvsrepo/SampleProduct</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 7</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);"> 8</span> <span style="color: rgb(0, 0, 0);">def cvscheckout<br /></span><span style="color: rgb(0, 128, 128);"> 9</span> <span style="color: rgb(0, 0, 0);">    @ant.cvs(<br /></span><span style="color: rgb(0, 128, 128);">10</span> <span style="color: rgb(0, 0, 0);">        :cvsroot</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">#{@cvsroot}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">11</span> <span style="color: rgb(0, 0, 0);">        :command</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">checkout -A</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">12</span> <span style="color: rgb(0, 0, 0);">        :</span><span style="color: rgb(0, 0, 255);">package</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">.</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">13</span> <span style="color: rgb(0, 0, 0);">        :dest</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">cvsoriginal</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">14</span> <span style="color: rgb(0, 0, 0);">        :compressionlevel</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">9</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">15</span> <span style="color: rgb(0, 0, 0);">end<br /></span><span style="color: rgb(0, 128, 128);">16</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">17</span> <span style="color: rgb(0, 0, 0);">def cvsupdate<br /></span><span style="color: rgb(0, 128, 128);">18</span> <span style="color: rgb(0, 0, 0);">    @ant.cvs(<br /></span><span style="color: rgb(0, 128, 128);">19</span> <span style="color: rgb(0, 0, 0);">        :cvsroot</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">#{@cvsroot}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">20</span> <span style="color: rgb(0, 0, 0);">        :command</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">update -A -d</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">21</span> <span style="color: rgb(0, 0, 0);">        :</span><span style="color: rgb(0, 0, 255);">package</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">.</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">22</span> <span style="color: rgb(0, 0, 0);">        :dest</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">cvsoriginal</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">23</span> <span style="color: rgb(0, 0, 0);">        :compressionlevel</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">9</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">24</span> <span style="color: rgb(0, 0, 0);">end<br /></span><span style="color: rgb(0, 128, 128);">25</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">26</span> <span style="color: rgb(0, 0, 0);">def compile(project_name)<br /></span><span style="color: rgb(0, 128, 128);">27</span> <span style="color: rgb(0, 0, 0);">    @ant.javac(<br /></span><span style="color: rgb(0, 128, 128);">28</span> <span style="color: rgb(0, 0, 0);">        :srcdir</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">cvsoriginal/#{project_name}/src</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">29</span> <span style="color: rgb(0, 0, 0);">        :destdir</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">cvsoriginal/#{project_name}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">30</span> <span style="color: rgb(0, 0, 0);">        :target</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">1.5</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">31</span> <span style="color: rgb(0, 0, 0);">        :encoding</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">GBK</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">32</span> <span style="color: rgb(0, 0, 0);">    @ant.copy(    :todir</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">cvsoriginal/#{project_name}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) </span><span style="color: rgb(0, 0, 255);">do</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">33</span> <span style="color: rgb(0, 0, 0);">        fileset(:dir</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">cvsoriginal/#{project_name}/src</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) </span><span style="color: rgb(0, 0, 255);">do</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">34</span> <span style="color: rgb(0, 0, 0);">            exclude(:name</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">**/*.java</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">35</span> <span style="color: rgb(0, 0, 0);">        end<br /></span><span style="color: rgb(0, 128, 128);">36</span> <span style="color: rgb(0, 0, 0);">    end<br /></span><span style="color: rgb(0, 128, 128);">37</span> <span style="color: rgb(0, 0, 0);">    @ant.jar(<br /></span><span style="color: rgb(0, 128, 128);">38</span> <span style="color: rgb(0, 0, 0);">        :destfile</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">build/#{project_name}.jar</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">39</span> <span style="color: rgb(0, 0, 0);">        :basedir</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">cvsoriginal/#{project_name}</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">, <br /></span><span style="color: rgb(0, 128, 128);">40</span> <span style="color: rgb(0, 0, 0);">        :manifest</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">MANIFEST.MF</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">) </span><span style="color: rgb(0, 0, 255);">do</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">41</span> <span style="color: rgb(0, 0, 0);">        exclude(:name</span><span style="color: rgb(0, 0, 0);">=&gt;</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">src/**</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)<br /></span><span style="color: rgb(0, 128, 128);">42</span> <span style="color: rgb(0, 0, 0);">    end<br /></span><span style="color: rgb(0, 128, 128);">43</span> <span style="color: rgb(0, 0, 0);">end<br /></span><span style="color: rgb(0, 128, 128);">44</span> <span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">45</span> <span style="color: rgb(0, 0, 0);"># to actually call your target<br /></span><span style="color: rgb(0, 128, 128);">46</span> <span style="color: rgb(0, 0, 0);"></span><span style="color: rgb(0, 0, 255);">if</span><span style="color: rgb(0, 0, 0);"> ARGV.empty</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">47</span> <span style="color: rgb(0, 0, 0);">    puts </span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">Usage: jruby #{$0} [target]</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">48</span> <span style="color: rgb(0, 0, 0);"></span><span style="color: rgb(0, 0, 255);">else</span><span style="color: rgb(0, 0, 0);"><br /></span><span style="color: rgb(0, 128, 128);">49</span> <span style="color: rgb(0, 0, 0);">    eval ARGV[</span><span style="color: rgb(0, 0, 0);">0</span><span style="color: rgb(0, 0, 0);">]<br /></span><span style="color: rgb(0, 128, 128);">50</span> <span style="color: rgb(0, 0, 0);">end<br /></span><span style="color: rgb(0, 128, 128);">51</span> <span style="color: rgb(0, 0, 0);"></span></div><br /></math></length></stringutil></substring></variable>可以看到几乎都是我们熟悉的ANT Task�Q�只是更加紧凑更加灵�z�，一旦掌握了最最基本的Ruby语法�Q�用它写出功能强大的构徏脚本可以说是分分钟搞定�?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/124859.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-06-18 00:39 <a href="http://www.tkk7.com/sean/archive/2007/06/18/124859.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[八卦] Java "forks": first .NET, then SWT/Eclipse, now Harmony?</title><link>http://www.tkk7.com/sean/archive/2007/04/14/110644.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sat, 14 Apr 2007 07:20:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/04/14/110644.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/110644.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/04/14/110644.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/110644.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/110644.html</trackback:ping><description><![CDATA[
		<br />
��d��一����h有意思的文章�Q�来自Weiqi Gao�Q?br /><a  target="_blank">http://www.weiqigao.com/blog/2007/04/12/java_the_third_fork_from_sun.html</a><br /><br />
�q�几�q�Sun的日子似乎�ƈ不好�q�：和微软先是不�Ƣ散后来虽然和解但貌合神���，微��Y不买Sun的�̎�Q�干脆自己搞�?NET�Q�对IBM更是气不打一处来�Q�但是不���怎么说SWT/Eclipse�q�朵��q��实开得太艻I��甚至盖过了Sun的光芒；现在Sun�?a  target="_blank">和Apache铆上�?/a>�?br /><br />
�q�三�ơ不和，背后的原因几乎都是Sun不愿意大胆革新Java�Q�或者放弃对Java的控制权�Q�Sun的JDK开源�ƈ不能改变Sun对Java的实际控�Ӟ���?br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/110644.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-04-14 15:20 <a href="http://www.tkk7.com/sean/archive/2007/04/14/110644.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] Java SE 1.6.0发布�W�一个update release</title><link>http://www.tkk7.com/sean/archive/2007/04/01/107840.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sun, 01 Apr 2007 14:49:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/04/01/107840.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/107840.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/04/01/107840.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/107840.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/107840.html</trackback:ping><description><![CDATA[
		<br />
版本�?.6.0_01�?br /><br />
详见:<br /><a  target="_blank">http://java.sun.com/javase/6/webnotes/ReleaseNotes.html</a><br /><br /><br /><img src ="http://www.tkk7.com/sean/aggbug/107840.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-04-01 22:49 <a href="http://www.tkk7.com/sean/archive/2007/04/01/107840.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[阅读] JRuby, Groovy, and Swing</title><link>http://www.tkk7.com/sean/archive/2007/02/21/100322.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Wed, 21 Feb 2007 12:03:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/02/21/100322.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/100322.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/02/21/100322.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/100322.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/100322.html</trackback:ping><description><![CDATA[<br />
以下是一�l�相互关联、按旉���先后排列�?���blog文章�Q�主要探讨是Swing存在的问题以及动态语�a�如JRuby/Groovy能否帮我们解决Swing的问题：<br />
<br />
<a  target="_blank">JRuby can save Swing</a><br />
<a  target="_blank">JRuby cannot save Swing</a><br />
<a  target="_blank">Groovy can save Swing</a><br />
<br />
挺有���的�Q�推荐大家有�I����一诅R�?br />
<br /><br />
<img src ="http://www.tkk7.com/sean/aggbug/100322.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-02-21 20:03 <a href="http://www.tkk7.com/sean/archive/2007/02/21/100322.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] Apache ActiveMQ graduates from incubator</title><link>http://www.tkk7.com/sean/archive/2007/02/07/98456.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Tue, 06 Feb 2007 16:28:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/02/07/98456.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/98456.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/02/07/98456.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/98456.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/98456.html</trackback:ping><description><![CDATA[<br/>
Apache旗下的ActiveMQ日前正式"毕业"成�ؓApache的顶�U�项目之一。官方主��也�?a >http://incubator.apache.org/activemq/</a>改�ؓ<a  target="_blank">http://activemq.apache.org/</a>�?br/>
<br/>
<br/>
<img src ="http://www.tkk7.com/sean/aggbug/98456.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-02-07 00:28 <a href="http://www.tkk7.com/sean/archive/2007/02/07/98456.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[阅读] 谁射杀了桌面版Java</title><link>http://www.tkk7.com/sean/archive/2007/01/25/96047.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Thu, 25 Jan 2007 13:30:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/01/25/96047.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/96047.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/01/25/96047.html#Feedback</comments><slash:comments>4</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/96047.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/96047.html</trackback:ping><description><![CDATA[<br/>
<a  target="_blank">http://mikeomatic.net/?p=138</a><br/>
<br/>
挺有���的一���文章。Java在桌面应用这个领域始�l�得不到�q�泛的认同，虽然Java 6和SWT/RCP都�ؓ改善桌面版Java应用做出了自��q��努力�Q�但Java在这个领域的坏名声已�l�难以挽回。造成�q�一现状的始作俑者是谁，是什么原因导致�h们对桌面版Java心存偏见�Q���用Java开发桌面应用的朋友也会�l�常会觉得力不从心呢�Q�该文作者提��Z��三点�Q?br/>
<br/>
<ol>
<li>Sun没有意识到这样一个事实：��M��一�ƾ桌面框架的实现�Q�假如不能无�~�的�q�行在Windows上，都注定成为“也能运行”的一�U�GUI技术，始终无法和native的版本抗衡�?/li>
<li>他们认定解决�Q�实玎ͼ�高��桌面控�g的方法是通过Swing�q�种方式�Q��ؓ了“跨�q�_��”，所有东西本质上都是通过JFrame自己在canvas上画�Q�而不是利用现成已�l�实现的东西�Q�带来额外的开销和重复劳动�?/li>
<li>他们早应该把官方的开发工具做得更加完善，现在NetBeans发展很好�Q�但是不是有点太晚意识到�q�个问题了，而不论OS X�q�是Windows�Q�都在这斚w���U�篏了一大批忠实用户�?/li>
</ol>
<br/>
我认为，不管桌面版Java�q�去的名声如何，能够跨��^台运行，���来���好的虚拟机环境和性能�Q�越来越好的API和工��h��持，庞大的开发群体和开源框�?工具�Q�Java仍然是开发企业��桌面应用的一个相当不错的选择�?br/>
<br/>
<br/>
<img src ="http://www.tkk7.com/sean/aggbug/96047.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-01-25 21:30 <a href="http://www.tkk7.com/sean/archive/2007/01/25/96047.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Learn to be defensive</title><link>http://www.tkk7.com/sean/archive/2007/01/25/95819.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Wed, 24 Jan 2007 16:03:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/01/25/95819.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/95819.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/01/25/95819.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/95819.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/95819.html</trackback:ping><description><![CDATA[<br/>
作�ؓ开发者，我们必须要学会defensive programming�Q�尤其是对要求高可靠性和无�h职守的企业��应用中，需要特别留意我们的设计和编码，必须���可能做到��够defensive�?br/>
<br/>
什么是defensive programming�Q��D个大安���看过的例子：<br/>
<br/>
<code>
String str = ...<br/>
if ("".equals(str)) {} <br/>
</code>
<br/>
在这里我们不写str.equals("")而是反过来，���是��Z��防止出现不必要的NPE �?NullPointerException�?br/>
<br/>
�q�行期异常是最最需要特别关照的一�U�非正常状况�Q�除了像上面�q�类要求我们采用相对较好的编码习惯之外，��Z��减少�q�行期异常的发生�Q�通常也需要��用try-catch代码块来把我们相对脆弱，或者需要格外保护的逻辑包�v来，对于外部传进来的参数�Q�一定要assert它们的合法性，即assert它们是否能够安全的被后面的逻辑所使用�?br/>
<br/>
通常意义上，defensive programming主要cover的是避免不必要的�q�行期异常发生。我们可以更�q�一步，更广义的�q�用defensive programming的核心思想�Q�在企业应用中，除了�q�行期异常，对于有些看似严重的极端的错误�Q�如�|�络���时�Q�连接丢失，数据库提交失败等情况�Q�需要我们具体问题具体分析，�q����所有checked exception都一定需要我们去一一catch然后处理。更多的时候，���其当开发无�����守的后台�E�序�Q�我们可以采取重试、报告、修改外部数据等方式处理�Q�能够自行解决的�Q�就不要动不动就报错�Q�或�{�待用户���认�Q�不能自行解决的�Q�则要及时报告�ƈ停止�q�行�Q�避免更大的错误发生�?br/>
<br/>
举个相对具体的例子，两个异构的系�l�，通过一个中间层的消息��^台相互发送消息，通信协议采用最基本的socket方式�Q�这三个�pȝ��随时都可能出现宕机或链接中断的情��c���ؓ了保证数据的完整性，我们拿其中一个需要发送和接收消息的系�l�来�l�说�Q?br/>
<br/>
一个可能的实现方式是：该系�l�所有要发送的消息保存到数据库�Q�给它一个初始状态；另一个独立进�E�从数据库按照时间先后拿出消息，更新拿出的这条消息的状态�ؓ处理中，�q�尝试发送消息；成功后根据需要，更新消息状态�ؓ成功发送或者直接删除，如果遇到��p�|或异常，消息恢复为初始状态，�U�程sleep一�D�|����_��然后再次���试�Q�多�ơ尝试或者尝试跨度超�q�一定时间范��_��则停止处理，向管理员汇报�Q�通过邮�g、短信等途径�Q�。对于接收到的消息，同样是先存入数据库，然后再由后箋的进�E�用�c�M��的方式取出�ƈ处理。如果程序崩溃，可以自动重新启动�Q�应用或整个服务器）。这样不���哪一�D�通信�U��\出现故障或阻塞，或者宕机，�pȝ��都可以一步一个脚华ͼ����保��d����d��而自动的执行�Q��ƈ且忠实记录下有�h值的状态信息，出现问题时管理员可以很直观的看到在哪个环节出现故障，从而快速找到问题关键�ƈ有效解决�?br/>
<br/>
Defensive programming可以让我们的应用更健壮，在保证数据正���性、完整性的前提下，面对困难也能更加独立自主。和defensive programming相关的话题我惛_��家如果感兴趣�Q�可以展开更多更深入的探讨�Q�这里只是给大家做个介绍性的铺垫�Q�能抛砖引玉当然更好�?br/>
<br/>
<br/><img src ="http://www.tkk7.com/sean/aggbug/95819.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-01-25 00:03 <a href="http://www.tkk7.com/sean/archive/2007/01/25/95819.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>[新闻] Eclipse Joins JCP</title><link>http://www.tkk7.com/sean/archive/2007/01/13/93582.html</link><dc:creator>laogao</dc:creator><author>laogao</author><pubDate>Sat, 13 Jan 2007 04:05:00 GMT</pubDate><guid>http://www.tkk7.com/sean/archive/2007/01/13/93582.html</guid><wfw:comment>http://www.tkk7.com/sean/comments/93582.html</wfw:comment><comments>http://www.tkk7.com/sean/archive/2007/01/13/93582.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.tkk7.com/sean/comments/commentRss/93582.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/sean/services/trackbacks/93582.html</trackback:ping><description><![CDATA[<br/>
原文:<br/>
<a  target="_blank">http://www.linux-watch.com/news/NS6467114693.html</a><br/>
<br/>
#更新:<br/>
�Ҏ��Eclipse Foundation的Executive Director Mike Milinkovich�?a  target="_blank">blog</a>文章�Q�Eclipse Foundation除了���加入JCP之外�Q�还���加入OMG和OSGi�?br/>
<br/>
<br/>
<img src ="http://www.tkk7.com/sean/aggbug/93582.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/sean/" target="_blank">laogao</a> 2007-01-13 12:05 <a href="http://www.tkk7.com/sean/archive/2007/01/13/93582.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>                                                                                                                                                                                                                                                                           <footer>
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