Handling exceptions in Struts 1 ActionForm

Question

I am working on an old web application which uses Struts 1.1. In order to do business validations (complex validations involving multiple form properties and invoking backend services), i wrote an ActionForm implementation which invokes a chain of validators on the ActionForm.validate method.

The chain of validators are implemented using commons chain. Everything is good, except that when an exception occurs in ActionForm.validate, it is not caught by the struts exception handler, instead the stacktrace is shown on the screen. The struts exception handler doesn't catch that

Is there anyway to avoid the stacktrace on the page and propagate the exception to struts exception handler?

Thanks