Struts error page

[groovyjman21]

Hi, I have a struts app and I want to create a error.jsp page. I've
read the FAQs and understand how to set a global error page in struts
config, the thing is I want to display the error and error message
thrown by the Java app and the stack trace, not a custom error message
as defined by key="error.input..." parameter referencing
MessageResources. How can I access the error thrown rather than a
custom error message, preferably using struts tags instead of jsp
code? Any help appreciated.