Tomcat + Struts + OpenID raising ServletExceptions

I am working with Tomcat 5.5.x with Struts 1.2 to run a rather large website (large w.r.t. source code). I'm looking to add OpenID to my website, mostly to access attribute exchange to help accelerate the registration process.

Every Java implementation for OpenID I have attempted to use will cause a ServletException. Tracing this has been very difficult, but it seems merely instancing any class that makes use of Apache HttpClient will cause the crash.

Is this a configuration problem 开发者_C百科I can address in the JVM, or is it positively wrong to try to initiate an outbound Http request from within an inbound Http request?

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Well it appears the error was in between the keyboard and the chair. Although I had added the libraries to my build path, I assumed Eclipse would automatically move these jars into the lib folder, but I was wrong. Thanks for letting me figure this one out on my own, wisdom of the crowd and all that.