If you use apache module mod_alias together with module mod_rewrite, you probably encounter “Bad Request” error if the settings are not correctly configured.
For example, if you want to make the folder “/opt/mysite_v1.2″ have the alias as “/mysite” so it can be accessed as http://www.mydomain.com/mysite. And you want to have clean url “/mysite/page1″ mapped to “/mysite/index.php?p=page1″.
To [...]
OpenJPA is an implementation of the JPA (Java Persistence API) standards. Initially, I used OpenJPA with Derby which is also known as JavaDB. It works well. However, when i tried to use MySQL as the backend database, I encountered a few issues. Here are a few small tips i would like to share when using [...]
Since version 1.6.1, Ant, the java build tool, has a core task called “cvschangelog“. It is quite useful to use this task to grab a list of recent changes committed to the CVS repository. The output of this task is in XML format. Something like the following:
<changelog>
<entry>
<date>2009-09-02</date>
<time>12:00</time>
<author>robin</author>
<file>
<name>test/ant/task/ChangeLog.txt</name>
<revision>1.2</revision>
<prevrevision>1.1</prevrevision>
[...]
JSP expression language (EL) is quite handy. but it only works when you indicate your web application is using version 2.4 or higher. That means you have the following in your <Your-Web-App>/WEB-INF/web.xml:
<?xml version=”1.0″ encoding=”UTF-8″?>
<web-app id=”WebApp_ID” version=”2.4″ xmlns=”http://java.sun.com/xml/ns/j2ee” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd”>
…
Google Web Toolkit (GWT) is a handy Ajax Web application development tool. Since version 1.6.4, GWT [...]
Here i’ve gathered some links pointing to tips for installing windows xp, vista or 7 without cd/dvd driver (Imaging your laptop/notebook/netbook does not have an internal cd/dvd driver, and you don’t have an external one either.)
Windows xp
When windows xp came into market, the usb keys/external drivers are not as popular as they are now, nor [...]
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