The Author Online Book Forums are Moving

The Author Online Book Forums will soon redirect to Manning's liveBook and liveVideo. All book forum content will migrate to liveBook's discussion forum and all video forum content will migrate to liveVideo. Log in to liveBook or liveVideo with your Manning credentials to join the discussion!

Thank you for your engagement in the AoF over the years! We look forward to offering you a more enhanced forum experience.

jagdeep (5) [Avatar] Offline
#1
Hi Iain,

I went thru the posts on the xerces/ build problems by other forum members, but could not find a reason for why I have my build problem.

I have the latest ant (1.6.2), Java 1.3. On building, i get multiple errors the first couple of which seem to be not finding some classes associated with the xerces reader package. The jar I have in the ant/lib is xercesImpl.jar, on looking in it i find the reader package missing.

what am I doing wrong here? do i need to downlaod xerces seperately?

Also, the second zip in your download: i see ant.jar, xerces.jar, what are these for? Do we need to customise these jars for the project to work? or can i just work with the standard stuff i have?

thanks,
Jagdeep
iain (56) [Avatar] Offline
#2
Re: Xerces Reader package
Hi,

The Xerces workaround in the code is specific to a particular version of Xerces (the one included in the second zip download) because it uses Xerces classes that are didn't make it into any other versions (it's not Xerces' fault - these were "unpublished" internal classes that I had to tweak to get Xerces to work properly for Jabber/XMPP parsing).

So, if you use the Xerces in the second zip (make sure it's on the compile path before the ones that comes with Ant) you should be ok.

-iain

BTW - if you want to do more work with either the server or client sides it's a good idea to learn with the book source to see how it's done, but then actually use a "production" client/server for experimentation and further work. The book source omits a lot of error checking for clarity that any reasonable code should have. I highly recommend Jive's Smack client library, and the Messenger server (Messenger is commercial but has a free 10 user default version).

http://www.jivesoftware.com

Disclaimer: I worked for Jive software and wrote Messenger and provided input on Smack so I am biased. smilie