Anonymous - 2003-02-24

I want to use httpunit in servlet(not testing servlet).
In servlet, I need to visit several web pages and compose the results from several webs into one response. I want to use httpunit to visit the web pages.
However, it will raise following exception when i  new WebConversation in servlet?
Help me!

javax.servlet.ServletException: Servlet execution threw an exception    at  org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)