Steps to enable SSI (Server Side Include) in Apache HTTPD: Enable mod_include . In httpd.conf , update directive: AllowOverride Options FileInfo In .htaccess : Options +Includes AddType text/html .shtml A... Files with extension .shtml will be processed with SSI. You may want to enable mod_cgi to include output from CGI programs: <!--#include virtual="/cgi-bin/counter.pl" --> To control caching : Use the XBitHack Full configuration. This tells Apache to determine the last modified date by looking only at the date of the originally requested file, ignoring the modification date of any included files. Use the directives provided by mod_expires to set an explicit expiration time on your files, thereby letting browsers and proxies know that it is acceptable to cache them.

My problem is simple: in my XML data, a timestamp is provided as a long integer (number of milliseconds since the "the epoch"). When I do XSLT, I want to display it as a readable string, such as "Mon Nov 01 18:08:48 CDT 2010". After hours of struggle, I found: It's not so easy to get the job done with JDK 1.6 There are tons of garbage on the web in this space (suggestions, code snippets that simply don't work) Simple Xalan extension functions was the only resource that's somewhat informative. Even there some of the examples don't work. Below is a list of what worked and what didn't. This works: <xsl:stylesheet version="1.0" xmlns:xsl="h... This does not (providing long value to Date constructor): <xsl:stylesheet version="1.0" xmlns:xsl="h......

A naive try would be something like this: $ nc -l 8082 | nc remote_host 80 Yes, it does forward the request from local port 8082 to remote_host:80 , but the response is dumped to stdout , not routed back to the client as expected. Using a named pipe makes it work: $ mkfifo backpipe $ nc -l 8082 0<backpipe | nc ... Use tee to get a glimpse of the response through the pipe (I wasn't able to find a way to dump the request): $ nc -k -l 8082 0<backpipe | nc localhost 80 | tee... The GNU netcat has a different syntax than the stock nc . It also supports different switches. To listen to port 1234: $ netcat -l -p 1234...

Got this error while trying to build Android app: [apkbuilder] Creating AppInfo-debug-unaligned.ap... Solution: Delete the Android debug keystore: $ rm ~/.android/debug.keystore Build again: $ ant debug The new key is valid for 30 years (keystore password is 'android'): $ keytool -list -v -keystore ~/.android/debug.keys...

This is the task: your client wants to know how the web application is used. That is pretty easy. A plethora of commercial tools or any of the free log analysis tools such as analog and AWStats would fit the bill. But here's the catch: they want to know not only what pages are visited by how many people and when, but also who logged in and did what. Your application is using form based authentication and therefore, everyone is anonymous in the web access log. What to do? This is a servlet filter that generates a web access log with authenticated user info that can be fed to log analysis tools such as analog and AWStats . Filter code (the output format is Apache...

The log line was like this: 2011-01-19 15:16:34,842 INFO [STDOUT] (HDScanne... Note that INFO and timestamp were printed twice. Based on my configuration, I was expecting something like this: 2011-01-19 15:16:34,842 INFO [XmlWebApplicationC... i.e., the logger name should have been XmlWebApplicationContext , not STDOUT ! What was the problem? I found this error message in server.log : 2011-01-19 14:34:38,107 ERROR [STDERR] (main) lo... It turned out that org.apache.log4j.Appender was loaded by my web application class loader, whereas org.jboss.logging.appender.FileAppender was loaded by the JBoss bootstrap class loader. Removing the log4j jar from my web application archive fixed the problem (sine log4j is already available in JBoss). Why was the logger changed to STDOUT? JBoss detects that there's a problem with the log4j configuration and routes all...

Edit the file server\default\conf\jboss-log4j.xml and change the log level from INFO to DEBUG : <!-- ============================== --> <!-... Presumably this should change the log level for the console appender (STDOUT) to DEBUG. However, this change alone does not work. It should be used in combination with the system property jboss.server.log.threshold . Either add -Djboss.server.log.threshold=DEBUG to JAVA_OPTS in bin\run.conf.bat : rem # JVM memory allocation pool parameters - modi... or set it from the command line: bin\run -Djboss.server.log.threshold=DEBUG

This one is even more weird: it worked on Windows but failed on Linux, using default tools JDK1.6.0_20 on both. The exception thrown was: java.lang.RuntimeException: Invalid conversion fro... And the stack trace: java.lang.RuntimeException: Invalid conversion fro... This was the XSL used: <?xml version="1.0" encoding="ISO-8859-1"?> <xs... The problem was , DateUtil.java had two getDate methods, one taking long parameter, the other taking a String parameter. And Java's XSLT get confused about which one to use: import java.util.Date; import java.text.SimpleD...

Following are some bugs in the Xalan jar shipped with JBoss 5.1.0 GA and JBoss 6.0. The Xalan jar file is located in jboss-5.1.0.GA/lib/endorsed ( %JBOSS_HOME%/common/lib for JBoss 6.0). Test xml: <?xml version="1.0" encoding="ISO-8859-1"?> ... Test xsl: <?xml version="1.0" encoding="ISO-8859-1"?> <xs... XSLT Java code: import org.w3c.dom.*; import javax.xml.parsers.... DateUtil.java import java.util.Date; public class DateUti... XSLT output: Transformer Factory class: class org.apache.xalan.... Apparently, the output is wrong. The string "A test event" should not have been displayed.

XSLT by default writes namespace declarations in the output. Most of the time it's spurious, sometimes outright wrong. Take this XML: <?xml version="1.0" encoding="ISO-8859-1"?> <ev... And this XSL: <?xml version="1.0" encoding="ISO-8859-1"?> <xs... where DateUtil.java is: import java.util.Date; public class DateUti... The output is (with JDK1.6): Title: <br xmlns:java="http://xml.apache.org/x... The namespace declaration went to the <br> element, not the timestamp where it belongs. To remove the namespace info, add exclude-result-prefixes to the XSL: <?xml version="1.0" encoding="ISO-8859-1"?> <xs...