“javax.servlet.ServletException: non-HTTP request or response” in JBoss

Question

My jboss is throwing undescriptive error while trying to run my application (spring mvc). It deploys ok, and this exception doesn\'t tell me anything useful so I don\'t real

Answer 1

Try removing servlet-api jar from your WAR file.

Answer 2

If you are using Maven, you can just set the scope of the servlet-api to provided.

Answer 3

This gets thrown in HttpServlet.service(ServletRequest, ServletResponse) when the parameters can't be cast to HttpServletRequest and HttpServletResponse respectively.

That means one of two things:

• the parameters are of the wrong type (unlikely) or
• some filter is using the wrong copy of those types, loaded with a wrong classloader (for example if you deliver your own copy of servlet-api-x.x.jar with your webapp).