Hi there

It would appear that when I try to send an Exception to my error page, something called StandardWrapperValve catches it and sets the exception to null. Then my error.jsp page gets a null exception and throws its own NullPointerException.

I have an error page referenced in web.xml like so:
<error-page>
<exception-type>java.lang.SecurityException</exception-type>
/util/error.jsp
</error-page>
after the servlet, servlet-name and welcome-file-list.

error.jsp has:
<%@page errorPage="true"%>

When a SecurityException is thrown, StandardWrapperValve catches the exception and prints out the StackTrace. It then seems to set the exception to null. Then my error.jsp page gets the exception, but it is now null, and so it throws a NullPointerException of its own.

when I do:
if (exception == null)
{
System.out.println("exception is null");
}

'exception is null' is printed out. Its when error.jsp tries exception.printStackTrace() that the error happens.

Can anyone shed some light?

Alex