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Use the JavaScript console in Firebug and run the following script snippet: var xmlhttp = new XMLHttpRequest(); xmlhttp.open(“HEAD”, “the_url”,true); // Async HEAD request (relative path to avoid cross-domain restrictions) xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4) { // make sure the request is complete alert(xmlhttp.getAllResponseHeaders()) // display the headers } } xmlhttp.send(null); // send request
cache-control, pragma, no-cache, expires header, and tons more. I learned a lot from the below referenced articles. Caching tutorial for web authors: http://www.mnot.net/cache_docs/ jGuru forum question: http://www.jguru.com/faq/view.jsp?EID=377
This is a follow-up for the Beware of WebSphere admins post just below – read it to find out how this relates to the jsessionid discussion My first immediate conclusion after the described deployment problems was to ban the use of the jsession cookie in future applications. If the application always includes the jsessionid parameter […]
A lot can go wrong when you deploy a simple Java EE application in IBM WebSphere – even if the application needs nothing but a Servlet container. We recently shipped a JEE application to the customer. Although it was packaged in an EAR file, because the customer required it, it needs nothing but what the […]
I just invested 30min to find tools/libraries which allow me to use PHP scripts instead of Java on the server when the front end is GWT. There are various potential channels through which GWT and PHP can talk to each other. GWT RPC, ideally native or over JSON/XML would certainly be the most obvious choice. […]
In most programming languages the regular expression pattern to find the digit ‘1’ surrounded by ‘;’ and other digits would be something like [;\d]*1[;\d]* So, the pseudo character class “; or digit” is matched zero or more times, then the digit 1 is matched followed by zero or more “; or digit”s. A few examples: […]
Finally, the first version of the iCalendar factory is here! It generates iCalendar objects and streams them as .ics attachments to your browser. URL parameters define all the attributes of the iCalendar. This allows to generate calendar entries from virtually everywhere.
Yet another software configuration issue that I wasted a few hours at today. Environment Apache 2.2.13 connect to Tomcat 5.5 with mod_jk (ajp13). Apache requires basic-auth for “/” i.e. for all URLs it serves. Just to be 100% precise, Tomcat runs as a WTP server “inside” Eclipse. However, the fact that it’s not a standalone […]
On some of my Eclipse workspaces the Galileo update failed in the SVN department (Subversive). Activating anything remotely related to Team/SVN features triggered an error. The workspace log contained: !MESSAGE An error occurred while automatically activating bundle org.eclipse.team.svn.core (512). !STACK 0 org.osgi.framework.BundleException: Exception in org.eclipse.team.svn.core.SVNTeamPlugin.start() of bundle org.eclipse.team.svn.core. at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:805) … Caused by: java.io.StreamCorruptedException: invalid […]
Reading a book on the Sun Certified Java Programmer (SCJP) test is interesting and worthwhile, but the test itself is bogus. Says who? I do… I took the SCJP for Java 2 many many years ago and subsequently also passed the SCJD and SCWCD tests. Recently, I took the SCJP 6 upgrade exam. So, I […]