Skip to main content

Investigating Java Tag Libraries

This Memorial Day weekend I decided to spend some time looking into Java Tag Libraries (JTLs) and how to use them with ColdFusion. The how I've been aware of for quite some time of course, but I've never really had the time or strong enough inclincation to start perusing some of the JTL sites out there and try some of this stuff out. There is some seriously cool stuff out there, and dropping it into ColdFusion is extremely simple.

I started by downloading a bunch of the JTLs from The Jakarta Project to give this all a whirl. Tip #1: Even if you drop the JTLs (the jar and tld files specifically, though from what I've messed with you can just use the jar) into your WEB-INF/lib directory, you have to restart ColdFusion for them to get picked up properly. I won't bother telling you how much time I wasted before I gave that a shot, so you're welcome for saving you the hassle. ;-)

The Jakarta stuff is pretty basic but there are some real gems in there. The screen scraping tag, for example, is pretty slick. I'm sure we've all been faced with the task of scraping HTML content to get one particular chunk that we want to, um, "borrow" for our own purposes, and it's usually a matter of making a CFHTTP call and doing some subsequent string manipulation to get what we're after. With the scrape JTL you still have to know what you're looking for, but getting the results is pretty darn simple:

<cfimport taglib="/WEB-INF/lib/taglibs-scrape.jar" prefix="scrp" />

<scrp:page url="" time="20">
<scrp:scrape id="quote" begin="<big>" end="</big>" anchors="yes" />

As you might guess that gives you Macromedia's current stock price as scraped from Yahoo! finance. Sure, not all that earth-shattering, and there are numerous web services that will give you stock quotes, but I thought this was a half-way decent example. Some of the string manipulation functions in the String JTL are slick as well, and there's a LOT of other stuff to check out on the Jakarta page.

The really cool thing is that there are TONS of JTLs out there for the taking. I'm going to peruse all the sites that I can find and see if there are cool ones to share--I've already found some great calendar and image manipulation tags, and I've barely scratched the surface of what's available. And by the example above I hope you can see how easy these are to use.

So this is how a true geek spends Sunday night of Memorial Day weekend. :-) How about the rest of you? Any cool JTLs you use or other experiences along these lines you'd like to share?


You aren't the only geek spending the eve of memorial day doing code!

Some pretty cool stuff man, I'll definately be looking forward to what else you find


Popular posts from this blog

Installing and Configuring NextPVR as a Replacement for Windows Media Center

If you follow me on Google+ you'll know I had a recent rant about Windows Media Center, which after running fine for about a year suddenly decided as of January 29 it was done downloading the program guide and by extension was therefore done recording any TV shows.

I'll spare you more ranting and simply say that none of the suggestions I got (which I appreciate!) worked, and rather than spending more time figuring out why, I decided to try something different.

NextPVR is an awesome free (as in beer, not as in freedom unfortunately ...) PVR application for Windows that with a little bit of tweaking handily replaced Windows Media Center. It can even download guide data, which is apparently something WMC no longer feels like doing.

Background I wound up going down this road in a rather circuitous way. My initial goal for the weekend project was to get Raspbmc running on one of my Raspberry Pis. The latest version of XBMC has PVR functionality so I was anxious to try that out as a …

Running a Django Application on Windows Server 2012 with IIS

This is a first for me since under normal circumstances we run all our Django applications on Linux with Nginx, but we're in the process of developing an application for another department and due to the requirements around this project, we'll be handing the code off to them to deploy. They don't have any experience with Linux or web servers other than IIS, so I recently took up the challenge of figuring out how to run Django applications on Windows Server 2012 with IIS.

Based on the dated or complete lack of information around this I'm assuming it's not something that's very common in the wild, so I thought I'd share what I came up with in case others need to do this.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Assumptions and CaveatsThe operating system is Windows Server 2012 R2, 64-bit. If another variant of the operating system is being used, these instructions may not work properly.All of the soft…

Fixing DPI Scaling Issues in Skype for Business on Windows 10

My setup for my day job these days is a Surface Pro 4 and either an LG 34UC87M-B or a Dell P2715Q monitor, depending on where I'm working. This is a fantastic setup, but some applications have trouble dealing with the high pixel density and don't scale appropriately.
One case in point is Skype for Business. For some reason it scales correctly as I move between the Surface screen and the external monitor when I use the Dell, but on the LG monitor Skype is either massive on the external monitor, or tiny on the Surface screen.
After a big of digging around I came across a solution that worked for me, which is to change a setting in Skype's manifest file (who knew there was one?). On my machine the file is here: C:\Program Files\Microsoft Office\Office16\LYNC.EXE.MANIFEST
And the setting in question is this:
Which I changed to this: <dpiAware>False/PM</dpiAware>
Note that you'll probably have to edit the file as administr…